The genus microsporum includes some 17 species, of which 5 are primarily isolated from humans and 7 primarily from animals. The pathogenesis of tinea capitis due to microsporum. Text is available under the creative commons attributionsharealike license. There was also a case of a dermatophytoses outbreak caused by microsporum canis in gibbon monkey, caused by human contamination 15. Pathogenic fungus microsporum canis activates the nlrp3. Dermatofita yang zoofilik terutama menyerang binatang, dan kadangkadang menyerang manusia, misalnya microsporum canis dan trichophyton verrucosum. They belong to the family arthrodermataceae and are most. Its pathogeny spectrum is very wide and includes cats, dogs and humans. Several synonyms are used, including ringworm of the scalp and. The genus microsporum is now restricted to just three species. Though mostly well known for ringworm in pets and other animals, it is also known to infect humans.
Microsporum and trichophyton species especially microsporum canis, microsporum gypseum, and. Microsporum is known to be a causative agent for dermatophytosis, cutaneous mycoses, tinea capitis and tinea corporis ringworm. Mcanis is the most frequent fungal agent of cats and dogs and is also the most frequent agent of human tina capitis and often the agent of tina corporis. Pcr test for microsporum canis identification medical. Dermatophytosis ringworm in chinchillas is most commonly caused by trichophyton mentagrophytes, although microsporum canis and microsporum gypseum have been incriminated in outbreaks of spontaneously occurring dermatophytosis. Treatment of d ermatophytoses c aused b y microsporum.
Invaded hairs show an ectothrix infection and fluoresce a bright greenishyellow under woods ultraviolet light. This fact makes this pathogen both anthrophilic and zoophilic in nature. Microsporum canis is a zoophilic dermatophyte of worldwide distribution and is a frequent cause of ringworm in humans, especially children. Trichophyton concentricum is the cause of the tropical infection known as tinea imbricata or tokelau.
This dermatophyte was previously recovered from north american horses on several occasions, but was considered to be m. Hay, in mandell, douglas, and bennetts principles and practice of infectious diseases eighth edition, 2015. Soetomo pendahuluan tinea kapitis ringworm of the scalp and hair, tinea tonsurans, herpes tonsurans. Microsporum definition of microsporum by medical dictionary. The animal itself can be examined with the lamp in a dark room and the site of the lesions will fluoresce. Some species of dermatophytes, such as trichophyton mentagrophytes, microsporum canis, and microsporum gypseum, produce specialized hyphae called perforating organs capable of perforating hair in vitro. Pdf pathogenesis of dermatophytosis and tinea versicolor. Microsporum canis microsporum distrotum, microsporum equinum kucing, anjing, kuda microsporum amazonicum tikus microsporum gallinae unggas. Tinea capitis is a disease caused by superficial fungal infection of the skin of the scalp, eyebrows, and eyelashes, with a propensity for attacking hair shafts and follicles see the image below. Arthrodermataceae sinonimos microsporum audouinii microsporum. Though mostly well known for ringworm in pets, it is also known to infect humans. Infections in kittens and puppies often result in scaly lesions with hair loss around the face, paws, and body. Dermatophytosis, microsporum canis, trichophyton mentagrophytes, microsporum gypseum ringworm, fungal infection affectedanimals. They cause superficial infections of the scalp tinea capitis in humans and ringworm in cats and dogs.
Microsporum gypseum an overview sciencedirect topics. Feb 21, 2020 tinea capitis is a disease caused by superficial fungal infection of the skin of the scalp, eyebrows, and eyelashes, with a propensity for attacking hair shafts and follicles see the image below. The organisms are usually readily seen on high power magnification on haematoxylineosin sections figures 2, 3. Infection of this fungus causes microsporosis, which is a type of tinea capitis characterized by severe itching of the scalp, red scaly papules around hair shafts, and hairs breaking off 10. Dermatophyte identification chart hardy diagnostics. Ifu10865a page 1 of 5 dermatophyte identification chart terms for the chart below fungi. Because it is often circular, ringworm was once thought to be caused by a worm curling up in the tissue. Members of microsporum and trichophyton cause illness in both humans and animals.
Etiologi spesies dermatofit umumnya dapat sebagai penyebab, kecuali e. Microsporum gypseum is a soilassociated dermatophyte that occasionally is known to colonise and infect the upper dead layers of the skin of mammals. Trichophyton tonsurans, microsporum gypseum microsporum canis the principal cause of ringworm in dogs and cats and a zoophilic fungal species of fungi causing sporadic dermatophytosis in humans, especially tinea capitis in children with cats and dogs. The disease is considered to be a form of superficial mycosis or dermatophytosis. The disease got the name ringworm because of the classic lesions, which resemble a red ring of inflamed skin with central healing. Microsporum canis or trichophytosis by trichophyton mentagrophytes and t. Microsporum canis kucing dan anjing terdigitale babi dan kelinci anthropophilic host manusia patogenesis dapat bertahan hidup pada stratum korneum, yang mana sebagai sumber nutrisi dermatofit dan pertumbuhan jamur mycelium infeksi dermatofit melewati 3 tahap. The hair perforation test is a diagnostic test to differentiate these species from. Files are available under licenses specified on their description page. Microsporum infects the skin and the hair, but seldom infects nails. The geographic distribution of the disease is shown in table 2682. Interestingly dermatophytic infections are predominant in the tropical and subtropical countries. Cutaneous mycosis caused by microsporum canis has been a serious health problem in the world in recent years. Microsporum canis is a pathogenic fungus with worldwide distribution that causes tinea capitis in animals and humans.
Tinea imbricata is best known in the pacific islands and melanesia, but reports of. Other pathogens can be isolated in different regions of the world, as in the caribbean and europe m. As an important arm of innate immunity, the inflammasomes are intracellular multiprotein complexes that control. Dermatophytosis is caused by pathogenic, keratindigesting fungi in the genera microsporum, trichophyton and epidermophyton. In all actuality ringworm has nothing to do with worms. Microsporum canis is a parasitisch af da haut voakummanda puiz dermatophyt. Dermatophytosis was described independently by several scientists in the 1830s and 1840s, 1 but probable descriptions of ringworm date back to ancient greek times. Donnelly bvsc, diplomate aclam, in ferrets, rabbits, and rodents third edition, 2012. All structured data from the file and property namespaces is available under the creative commons cc0 license. It is part of a group of fungi known as dermatophytes. The fungal skin disease dermatophytosis has come to be called ringworm. Examples include trichophyton rubrum, trichophyton kanei, trichophyton schoenleini, trichophyton concentricum. Prevalence of trichophyton, microsporum and epidermophyton. Microsporum canis, for which the natural hosts are cats and dogs, is the most prevalent zoophilic agent causing tinea capitis and tinea corporis in humans.
Ringworm can be transmitted between humans and animals. Microsporum canis microsporum canis is a fungal species that causes numerous forms of disease. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Microsporum y trichophyton son patogenos humanos y animales. The pathogenesis of the disease is a complicated and untill nowadays not entirely known process. This is typically caused by microsporum canisaudouinii. Tinea imbricata is a variant of tinea corporis that is caused by t. Dermatophyte identification chart terms for the chart below fungi. Nucleated, sporebearing nonchlorophyll producing organisms which generally reproduce sexually and asexually, and whose filamentous, branched somatic structures are typically surrounded by rigid cell walls. Microsporum canis microsporum distrotum, microsporum equinum kucing, anjing, kuda. The fungus can only live in dead keratin, the superficial layers of the skin. Microsporum canis is a pathogenic, asexual fungus in the phylum ascomycota that infects the upper, dead layers of skin on domesticated cats, and occasionally dogs and humans.
Nucleated, sporebearing nonchlorophyll producing organisms which generally reproduce sexually and asexually, and whose filamentous, branched somatic structures are typically surrounded by. Microsporum equinum was isolated in ontario, canada, from five human and two equine cases of ringworm infection. The primary hosts of anthropophilic species are human beings but they may also cause infection in animals. Prevalence of trichophyton, microsporum and epidermophyton species causing tinea capitis in children aged 314 years in mathare informal settlement, nairobi, kenya moto jedidah ndunge b.
Selain sifat keratinofilik, setiap spesies dermatofita mempunyai afinitas terhadap hospes tertentu. Microsporum canis is a fungal species that causes numerous forms of disease. Dogs, cats, humans, horses, cows, and other mammals. Dermatophytosis, more commonly known as ringworm, is actually a fungal infection that has nothing to do with worms. Trichophyton, 7 spesies microsporum dan satu spesies epidermofiton. Pdf dermatomicosis por microsporum canis en humanos y. This page was last edited on 18 december 2019, at 18. The most common zoophilic dermatophyte that infects dogs and especially cats is microsporum canis. Infection may also be caused rarely by the members of the genus candida and by nondermatophytic moulds belonging to the genera fusarium, scopulariopsis and aspergillus 3,4.
They cause superficial infections of the scalp tinea capitis in humans and. Since the publication of sabourauds remarkable work les teignes in 1910, little basic knowledge on ringworm of the scalp has accumulated. Jan 08, 2019 microsporum canis culture characteristic. To defy pathogenic fungal infection, the host innate immune system is the first line of defense. It is characterized by the appearance of homogeneous sheets or concentric rings of scaling that may cover large areas of the body fig. Microsporum canis definition of microsporum canis by. The name refers to an asexual formtaxon that has been associated with four related biological species of fungi.
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