How does Microsporum canis infect?

How does Microsporum canis infect?

canis mainly causes dermatophytosis in cats and dogs. And infected animals and asexual spores contaminated objects are common sources for human infection. Spores are very resistant, attach to the skin and germinate producing hyphae, which will then grow in the dead, superficial layers of the skin, hair or nails.

What disease does Microsporum canis cause?

Tinea corporis (B35. 6) caused by Microsporum canis which is fungal species that causes numerous forms of disease. It is part of a group of fungi known as Dermatophytes. Though mostly well known for ringworm in pets, it is also known to infect humans.

How do I get rid of Microsporum canis?

A variety of oral and topical antifungal agents is available and drugs such as griseofulvin (Gri), terbinafine (TER), itraconazole (IT), and fluconazole (FLZ) are used to cure severe infections in humans and animals [2,13,14].

What are the symptoms of microsporum Canis?

Symptoms of ringworm in dogs often include some combination of the following:

  • Hair loss (alopecia), which may be patchy or circular.
  • Broken hairs and poor hair coat.
  • Reddened or ulcerated skin.
  • Dandruff (scales)
  • Darkened skin.
  • Crusting of the skin.
  • Itchiness (pruritus) may or may not be present.

What are the symptoms of microsporum?

Inflammation and pain, red scaling areas, alopecia, brittle hair leading to hair loss and formation of black dots, boggy ulcerated skin lesions. Broad range of clinical presentation. Griseofulvin, itraconazole, terbinafine, ketoconazole, and fluconazole are effective treatments.

What does dermatophytes do to the skin?

Dermatophytes are fungi that require keratin for growth. These fungi can cause superficial infections of the skin, hair, and nails.

Which dermatophytes can infect hair skin and nail?

Definition. Dermatophytes are a unique group of fungi that infect keratinous tissue and are able to invade the hair, skin, and nails of a living host. This closely related group of organisms can be categorized into one of three genera: Trichophyton, Microsporum, and Epidermophyton.

How does microsporum grow?

Microsporum canis reproduces asexually by forming macroconidia that are asymmetrical, spherically shaped and have cell walls that are thick and coarsely roughened. The interior portion of each macroconidium is typically divided into six or more compartments separated by broad cross-walls.

How is microsporum Gypseum spread?

Transmission occurs via direct contact with an infected animal or person, or by contact with infected hair and scale on fomites or in the environment.

Where is microsporum found?

Microsporum distortum is a zoophilic dermatophyte that rarely infects humans. It has been isolated from ringworm in dogs, cats, horses, swine, guinea pigs, monkeys, rabbits, and humans (4,6). It produces a yellow-greenish fluorescence in hair, where it is associated with small ectothrix spores.

Is Microsporum canis a dermatophyte?

Microsporum canis is among the most common dermatophytes associated with tinea capitis and tinea corporis. Unlike some dermatophyte species, M. canis typically does not cause large epidemics.

Does Microsporum canis cause tinea capitis?

However, it also causes human infections and is a major agent of tinea capitis, as well as being commonly involved in tinea corporis. Microsporum canis has no specific growth factor or nutrition requirements; hence it grows well on most commercially available media. In addition, M. canis exhibits rapid colony growth at 25 °C.

What is the growth media for Microsporum canis?

In addition, M. canis exhibits rapid colony growth at 25 °C. Two growth media that help distinguish M. canis from other Microsporum spp. (notably the morphologically similar species, M. audouinii) – specifically polished rice and potato dextrose agar.

How does Microsporum canis infect the nail?

Microsporum canis generally invades hair and skin; however, some nail infections have been reported. When hair shafts are infected, M. canis causes an ectothrix -type infection where the fungus envelopes the exterior of the hair shaft without the formation of internal spores.

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