• Actinomycosis is a rare infectious bacterial disease caused by Actinomyces species. (wikipedia.org)
  • Actinomycosis is primarily caused by any of several members of the bacterial genus Actinomyces. (wikipedia.org)
  • as Actinomyces itself has little invasive ability, these other species often aid in the infection process. (wikipedia.org)
  • Actinomyces bacteria are generally sensitive to penicillin, which is frequently used to treat actinomycosis. (wikipedia.org)
  • Mycetoma due to actinomycetes should be differentiated from actinomycosis , which is an endogenous suppurative infection caused by Actinomyces israelii, other species of Actinomyces, or related bacteria, typically affecting the cervicofacial, thoracic, and pelvic sites (the latter is usually associated with the use of intrauterine devices). (medscape.com)
  • It is caused by Actinomyces species, which are anaerobic bacteria normally found in the mouth, throat, and gastrointestinal tract. (thesecretsofmedicine.com)
  • A definitive diagnosis often requires the isolation of Actinomyces species from clinical samples, such as sputum or tissue biopsy. (thesecretsofmedicine.com)
  • Actinomycosis Actinomycosis is a chronic localized or hematogenous anaerobic infection caused by Actinomyces israelii and other species of Actinomyces . (msdmanuals.com)
  • The causative organisms, Actinomyces species (most commonly A. israelii ), are often present commensally on the gums, tonsils, and teeth and may be present in the intestines and vagina. (merckmanuals.com)
  • Actinomyces (see Actinomycosis module for details) is facultatively anaerobic. (hopkinsguides.com)
  • Actinomycosis, or lumpy jaw, a disease common in animals but rare in humans, may be caused by bacteria of the Actinomyces species or by other anaerobic pathogens. (okhbot.com)
  • Introduction Actinomyces is a genus of bacteria that includes various species of filamentous, gram-positive, anaerobic or microaerophilic bacteria. (medicallabnotes.com)
  • Actinomyces israelii , or just A. israelii, is a gram-positive rod-shaped bacteria that causes a human infection called actinomycosis. (osmosis.org)
  • Actinomyces israelii is a type of bacteria that typically inhabits the mouth, skin, and gastrointestinal tract . (osmosis.org)
  • The branching bacteria that cause actinomycosis are non-acid-fast anaerobic or microaerophilic bacteria. (medscape.com)
  • Actinomycosis is a subacute-to-chronic bacterial infection caused by filamentous, gram-positive, non-acid-fast, anaerobic-to-microaerophilic bacteria. (medscape.com)
  • A. israelii is a normal commensal species part of the microbiota species of the lower reproductive tract of women. (wikipedia.org)
  • Cervicofacial actinomycosis is the most common type of the infection, comprising 50-70% of reported cases. (medscape.com)
  • Cervicofacial actinomycosis is characterized in the initial stages by soft-tissue swelling of the perimandibular area. (medscape.com)
  • Gram-positive organisms such as Staphylococcus aureus and Streptococcus species are the most commonly isolated organisms in patients with pyogenic vertebral infections. (wheelessonline.com)
  • Postoperative wound infections due to Nocardia species are rare, but case clusters of nosocomial transmission have been described. (medscape.com)
  • Three species of Chlamydia cause human disease, including sexually transmitted infections and respiratory infections. (msdmanuals.com)
  • More than 56 different species of fungi and bacteria have been reported to cause mycetoma. (medscape.com)
  • These bacteria can cause infection when they invade tissues, typically due to a breach in the mucous membranes or following dental procedures, trauma, or aspiration of contaminated secretions. (thesecretsofmedicine.com)
  • Cats typically come into contact with the leptospira bacteria in infected soil or mud, from drinking or being in contaminated water, or from coming into contact with urine from an infected animal. (petmd.com)
  • This infection typically occurs following oral surgery or in patients with poor dental hygiene. (medscape.com)
  • This disruption occurs through the generation of reactive oxygen species, which leads to the formation of free radicals that damage the DNA structure. (air2bhutan.com)
  • Furthermore, actinomycosis is generally a polymicrobial infection, with isolates numbering as many as 5-10 bacterial species. (medscape.com)
  • The characteristic lesion of actinomycosis is an indurated area of multiple, small, communicating abscesses surrounded by granulation tissue. (merckmanuals.com)
  • Actinomycosis abscesses grow larger as the disease progresses, often over months. (wikipedia.org)
  • Hematogenous dissemination to distant organs may occur in any stage of actinomycosis, whereas lymphatic dissemination is unusual. (medscape.com)
  • for example, S mutans and Streptococcus sanguis typically adhere to hard surfaces, while Streptococcus salivarius is found primarily on the tongue. (medscape.com)
  • It typically affects the lower extremities, but it can occur in almost any region of the body. (medscape.com)
  • Chronic exertional comparment syndrome is typically relieved by ceasing the exercise activity, although persistent symptoms may indicate the need for medicine or surgery. (okhbot.com)
  • Nocardial species can cause mycetoma , a chronic, swollen, purulence-draining, subcutaneous infection of the extremities, typically encountered in tropical areas of the world, but also has been reported from the southern United States, Central, and South Americas, and Australia. (medscape.com)
  • This presents as a subacute or chronic monoarthritis, typically involving the knee. (medscape.com)
  • Nocardia species, especially Nocardia brasiliensis, is the most commonly implicated actinomycetes. (medscape.com)
  • [2] [5] Less frequently, it is due to Acinetobacter , Clostridium , Klebsiella , and Pseudomonas species. (mdwiki.org)
  • Examples of these pathogens include Chlamydiae, Chlamydophila species, and rickettsiae. (msdmanuals.com)
  • An affected human often has recently had dental work, poor oral hygiene, periodontal disease, radiation therapy, or trauma (broken jaw) causing local tissue damage to the oral mucosa, all of which predispose the person to developing actinomycosis. (wikipedia.org)
  • This is typically due to oral flora and others (especially if receiving antibiotics recently or hospitalized). (hopkinsguides.com)
  • Infection typically spreads contiguously, frequently ignoring tissue planes and invading surrounding tissues or organs. (medscape.com)
  • Typically, these patients have a history of recent or remote bowel surgery (eg, perforated acute appendicitis, perforated colonic diverticulitis following trauma to the abdomen) or ingestion of foreign bodies (eg, chicken or fish bones), during which actinomycetes are introduced into the deep tissues. (medscape.com)
  • Specifically, they may be responsible for the early manifestations of actinomycosis and for treatment failures. (medscape.com)
  • Psittacosis (ornithosis) and actinomycosis may respond to sulfonamide therapy though most viruses and fungi are highly resistant to this group of drugs. (drugs.com)
  • Arbovirus (arthropod-borne virus) is defined as any virus that is transmitted to humans and/or other vertebrates by certain species of blood-feeding arthropods, mostly insects (flies and mosquitoes) and arachnids (ticks). (msdmanuals.com)
  • They typically live in soil and can also be found in aquatic environments. (doctor-dr.com)
  • It is not part of the International Committee on Taxonomy of Viruses classification of viruses (ie, it is not a species, genus, or family), which is based on the nature and structure of the viral genome. (msdmanuals.com)
  • The ileocecal region is involved most frequently, and the disease typically presents as a slowly growing tumor. (medscape.com)
  • Congenital disorders may cause a neck mass, typically long-standing. (msdmanuals.com)
  • Actinomycosis of the abdomen and pelvis accounts for 10-20% of reported cases. (medscape.com)