Which disease is caused by actinomycetes?

Actinomycosis is a rare infectious bacterial disease caused by Actinomyces species. The name refers to ray-like appearance of the organisms in the granules. About 70% of infections are due to either Actinomyces israelii or A.

What are Actinomyces species?

Actinomyces species are slow-growing, microaerophilic to facultative anaerobic, gram-positive, filamentous branching bacilli that are known to cause infection in three distinct anatomic sites: cervicofacial, thoracic, and abdominal. 26. They belong to the order Actinomycetales, along with Mycobacteria and Nocardia.

Is Actinomyces harmful?

Actinomycosis is a rare type of bacterial infection. It can be very serious but can usually be cured with antibiotics.

Which type of bacteria is Actinomycetes?

Actinomycetes are Gram-positive mycelial bacteria, known to produce a wide variety of industrially and medically relevant compounds (antibiotics, chemotherapeutics, fungicides, herbicides and immunosuppressants).

What causes Botryomycosis?

What causes botryomycosis? Staphylococcus aureus is the most commonly implicated, followed by Pseudomonas aeruginosa. Various other bacteria such as Proteus or Escherichia coli have also been isolated. Some form of trauma, surgery, or the presence of a foreign body usually precedes infection.

Why actinomycetes are called Ray fungi?

Ray fungi belong to the genus Actinomycetes which is a group of bacteria known as actinobacteria. These are gram-positive bacteria with an anaerobic mode of respiration that characterizes them. They are profoundly known as Ray fungi because of their colonies that form a fungus-like branched network of hyphae.

What are the symptoms of actinomycetes?


  • Draining sores in the skin, especially on the chest wall from lung infection with actinomyces.
  • Fever.
  • Mild or no pain.
  • Swelling or a hard, red to reddish-purple lump on the face or upper neck.
  • Weight loss.

What type of infection is histoplasmosis?

Histoplasmosis is a type of lung infection. It is caused by inhaling Histoplasma capsulatum fungal spores. These spores are found in soil and in the droppings of bats and birds. This fungus mainly grows in the central, southeastern, and mid-Atlantic states.

How do I get rid of actinomycetes?

In most cases of actinomycosis, antimicrobial therapy is the only treatment required, although surgery can be adjunctive in selected cases. Penicillin G is the drug of choice for treating infections caused by actinomycetes. Parenteral antibiotics are administered initially via PICC line, with transition to oral agents.

What is sporotrichosis caused by?

Sporotrichosis is a fungal infection, usually of the skin, caused by a microscopic fungus called Sporothrix schenckii.

What is Scrofuloderma?

Scrofuloderma is the result of cutaneous infection adjacent to a tuberculous focus, which may correspond to peripheral ganglionar tuberculosis (the most common form of extrapulmonary tuberculosis in HIV-positive patients and in children), or to bone, joint, or testicular tuberculosis.

What does Botryomycosis mean?

Botryomycosis is a chronic suppurative infection characterized by a granulomatous inflammatory response to bacterial pathogens; it may present with cutaneous or, less commonly, visceral involvement [1]. Botryomycosis was first described in a horse in 1870 by a German pathologist.

Which of the following is a fungus known to cause Chromoblastomycosis?

The fungi most commonly reported as causing chromoblastomycosis are F pedrosoi, C carrionii, and P verrucosa. A small number of cases due to F compacta, R aquaspersa, and different species of Exophiala have also been reported. In 2007, Chaetomium funicola was identified as a cause of chromoblastomycosis in Panama.

What is mucormycosis and what area of the body is most commonly infected?

Mucormycosis mainly affects people who have health problems or take medicines that lower the body’s ability to fight germs and sickness. It most commonly affects the sinuses or the lungs after inhaling fungal spores from the air. It can also occur on the skin after a cut, burn, or other type of skin injury.

What are the signs and symptoms of Pyomyositis?

What are the symptoms of pyomyositis?

  • Fever and chills.
  • A firm lump under your skin (the muscle abscess).
  • Pain and tenderness in the affected muscle.
  • Mobility issues, like not being able to walk like you usually do if the affected muscle is in your leg.

What are the complication of pyomyositis?

Pyomyositis: Life-threatening complications include sepsis and toxic shock syndrome. Gas gangrene usually follows penetrating injuries complicated by clostridial pyomyositis.

What is myositis and pyomyositis?

Pyomyositis was defined as acute bacterial infection of skeletal muscle with abscess formation. Acute bacterial myositis was defined as infection within the muscle, with inflammation extending diffusely through ⩾1 muscle group but without abscess formation.

What bacteria causes myositis?

Bacterial myositis, an inflammation of muscle tissues as the result of a bacterial infection, is commonly localized and occurs after an injury. Staphylococcus and Streptococcus organisms are usually responsible.

What microorganisms cause myositis or osteomyelitis?

Most cases of bacterial myositis are due to Staphylococcus aureus and recognized as pyomyositis.

What are the causes of myositis?

Myositis refers to any condition causing inflammation in muscles. Weakness, swelling, and pain are the most common myositis symptoms. Myositis causes include infection, injury, autoimmune conditions, and drug side effects. Treatment of myositis varies according to the cause.

What causes viral myositis?

The most frequent viral causes of myositis are the influenza viruses and enteroviruses, with symptoms of myositis typically starting a few days after the onset of fever. Symptoms are most prominent in the proximal musculature (arms and legs), and pain is often exacerbated by movement.

What disease attacks your muscles?

Myositis (my-o-SY-tis) is a rare type of autoimmune disease that inflames and weakens muscle fibers. Autoimmune diseases occur when the body’s own immune system attacks itself. In the case of myositis, the immune system attacks healthy muscle tissue, which results in inflammation, swelling, pain, and eventual weakness.

What autoimmune disease causes myositis?

Polymyositis and dermatomyositis may be associated with collagen-vascular or autoimmune diseases such as lupus. Polymyositis may also be associated with infectious disorders such as HIV, which causes AIDS.

Where does myositis occur?

The main muscles to be affected are around the shoulders, hips and thighs. Having myositis can also lead to other parts of the body being affected, such as the skin, lungs or heart. Sometimes myositis can affect the muscles that carry out tasks such as breathing and swallowing.

Who discovered myositis?

Discovery. In 1863 and 1887, Ernst Leberecht Wagner described polymyositis and dermatomyositis (also known as Unverricht-Wagner or Wagner-Unverricht syndrome) in two publications.

What are 2 causes of polymyositis?

Causes and Risk Factors for Polymyositis

  • Autoimmune conditions such as: Lupus. Rheumatoid arthritis. Scleroderma. Sjogren’s syndrome.
  • Viral infections like HIV and AIDS.
  • Diseases that affect your ability to breathe.