• Title/Summary/Keyword: dermatophyte

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Study on Cutaneous Mycoses in Oriental Medicine (피부진균증의 한의학적 고찰)

  • Cha, Eun-Yea;Kang, Jung-Soo
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.20 no.4
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    • pp.799-806
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    • 2006
  • Fungi cause a number of plant and animal diseases. Because fungi are more chemically and genetically similar to animals than other organisms, this makes fungal diseases very difficult to treat. Human fungal infections are uncommon in normally healthy persons, being confined to conditions such as candidiasis (thrush) and dermatophyte skin infections such as athlete's foot. However, in the immunocompromised host, a variety of normally mild or nonpathogenic fungi can cause potentially fatal infections. Furthermore, the relative ease with which people can now visit 'exotic' countries provides the means for unusual fungal infections to be imported into this country. Fungal infections or mycoses are classified depending on the degree of tissue involvement and mode of entry into the host. These are Cutaneous, Subcutaneous, Systemic, and Opportunistic. As listed above, in superficial mycoses infection is localised to the skin, the hair, and the nails. An example is 'ringworm' or 'tinea', an infection of the skin by a dermatophyte. Ringworm refers to the characteristic central clearing that often occurs in dermatophyte infections of the skin. Dermatophyte members of the genera Trycophyton, Microsporum and Epidermophyton are responsible for the disease. Tinea can infect various sites of the body, including the scalp (tinea capitis), the beard (tinea barbae) the foot (tinea pedis: 'athlete's foot') and the groin (tinea cruris). All occur in the United Kingdom although tinea infections, other than pedis, are now rare. Candids albicans is a yeast causing candidiasis or 'thrush' in humans. As a superficial mycoses, candidiasis typically infects the mouth or vagina. C. albicans is part of the normal flora of the vagina and gastrointestinal tract and is termed a 'commensal' However, during times of ill health or impaired immunity the balance can alter and the organism multiplies to cause disease. Antibiotic treatment can also alter the normal bacterial flora allowing C. albicans to flourish. If we study mycoses of the orient medicine, we can improve the medical skills about mycoses.

In vitro Evaluation of Antidermatophytic Activity of Egyptian Bee Propolis in Combination with Plant Essential Oils in Sheep Hoof Plate: An Experimental Model

  • Mahmoud, Yehia A.G.
    • Mycobiology
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    • v.31 no.2
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    • pp.99-104
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    • 2003
  • Bee propolis ethanolic extract with some plant essential oils was investigated for its antidermatophytic properties. The tested plant essential oils included jasmine, clove, lemon, Arabian jasmine, mint, rosa, olive and basil. The antidermatophytic activity has been compared to Naftifine-HCl and Clotrimazole used for dermatophyte treatment. Experimental model has been tested using sheep hoof plate for the in vitro tests to stimulate human nails. Mint, clove and basil with 4 mg/ml of bee propolis have a comparable efficacy to those of Naftifine-HCl and Clotrimazole. There is a great necessity for new effective low price and safe antidermatophyte agents to avoid recurrent infection. Propolis synergistic could be of great importance with essential oils of plants in dermatophyte therapy.

Characteristics of an imperfect fungus, Microsporum nigricans Yeeh sp. nov. (불완전 진균 Microsporum nigricans Yeeh sp.nov의 특성)

  • Yeeh, Yeehn
    • Korean Journal of Microbiology
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    • v.23 no.4
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    • pp.248-251
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    • 1985
  • An imperfect fungus recognized as a dermatophyte was isolated from soil samples and the macroscopic, microscopic and physiological characteristics were examined. From the comparisons of this isolate with the known species, the strain belonged to the genus Microsporum. She showed mant different characteristics from the related species, including colony color and shape, or number in a cell of macrocondium. This isolate was considered to be a novel species in the genus Microsporum. Therefore the name was given to her as Microsporum nigricans Yeeh sp. nov. because of dark blackish color from the macroscopic observation.

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Study of the Experimental Dermatophyte Infection in Animals (실험동물에 유발시킨 피부사상균증에 대한 연구)

  • Choi, Jong-Soo;Hwang, Kae-Yong;Kim, Ki-Hong;Kim, Sung-Kwang;Chung, Jae-Kyu;Suh, Soon-Bong
    • Journal of Yeungnam Medical Science
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    • v.4 no.1
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    • pp.81-87
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    • 1987
  • Experimental dermatophyte infections are essential for studying dermatophytosis. Induction of standard infections depends on control of three factors-spore dose, scarification, and species of the experimental animals. The authors evaluated the three factors in the experimental infection models, which were inoculated with quantitated spore solution on N. gypsea "+" and A. benhomiae "+" in rabit, guinea pig, rat, and mouse. The results were follows. 1. Infection was correlated with concentration of inoculum. 2. In traumatization method, abrasion with knife was the most effective for inoculation, followed by pricking, epilation, and shaving of hair in decreasing order. 3. Rabbit and guinea pig were more susceptable to dermatophyte infection rather than the rat and mouse. However, the mouse was not infected at all. 4. Guinea pig was the proper animal model for experimental dermatophytosis in susceptabillity, degree of clinical response, and duration of the infection. 5. A. benhamiae "+" showed more severe inflammation and shorter course than N. gypsea "+".

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Clinical and Mycological Observations on Equine Ringworm Due to Microsporum gypseujm (말에 있어서 Microsporum gypseum에 의한 백선증의 임상학적 및 진균학적 관찰)

  • Pal Mahendra;Matsusaka Naonori;Lee Chang Woo
    • Journal of Veterinary Clinics
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    • v.11 no.1
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    • pp.343-346
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    • 1994
  • Microsporum gypseum was identified as the prime cause of dermatitis in two young horses who were housed in unhygienic stables. The lesions were mainly distributed on the thorax, abdomen and rump. The diagnosis was established on the direct demonstration of dermatophyte in the cutaneous lesions and isolation of the fungus in pure and heavy growth from the infected hairs and skin scales on mycological medium at 3$0^{\circ}C$. Microscopoc morphology of the isolate in 'PHOL' stain many macroconidia and few microconidia. Epidemoilogical investigation revealed the prevalence of M. gypseum in the soil of stables. Mycological examination is highly imperative to distinguish the disease from other dermatological disorders. This apperas to be the first report of equine dermatitis due to M. gypseum in Westenn India.

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Kerion Celsi Caused by Trichophyton verrucosum Mimicking a Hypervascular Tumor in a Pediatric Patient: A Case Report (고혈관성 종양으로 오인된 Trichophyton verrucosum에 의한 두피 백선종창 1례)

  • Kim, Kyung-Ran;Park, Hwanhee;Kim, Doo Ri;Yoon, Yoonsun;Jeon, Chiman;Lee, Sanghoon;Lim, So Young;Kim, Ji Hye;Kim, Yae-Jean
    • Pediatric Infection and Vaccine
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    • v.29 no.2
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    • pp.118-123
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    • 2022
  • A dermatophyte is a zoonotic infection that causes infection on the skin, hair, and nails and is transmitted through contact. The species of Microsporum, Trichophyton, and Epidermophyton are the major dermatophytes that infect humans. Tinea capitis is a dermatophyte infection in the scalp, and it may progress to kerion celsi, including severe redness, swelling, and pus formation. Kerion celsi is sometimes misdiagnosed as a bacterial infection or a tumor. Trichophyton verrucosum is a zoophilic dermatophyte that mainly causes infection in cattle. It can be spread to dairy farmers or ranchers who have frequent contact with infected cattle. We report a pediatric case who received scalp tumor excision and a split-thickness skin graft for extensive and severe inflammatory scalp tumors that occurred after contact with cattle with ringworm. Finally, the patient was diagnosed with kerion celsi caused by T. verrucosum infection. This was based on the patient's medical history, clinical manifestations, and histopathologic findings.

JNirrofporNm c$\alpha$air Infection in a Horse and its Transmission to Man (말에 있어서 Microsporum canis 감염증과 사람에의 전염)

  • 팔마헨드라;이창우
    • Journal of Veterinary Clinics
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    • v.15 no.1
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    • pp.196-198
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    • 1998
  • 젊은 말과 그 관리인에게 발생한 Microsporum canis 감염에 의한 백선에 대해 보 고하였다. 말과 사람에 있어서의 진단은 피부 병변의 KOH 표본에서 피부사상균을 직접 증명 하고,감염된 인설의 순수 배양물로부터 Microsporum canis를 분리한 것에 근거를 두었다. 말과 사람에 서 분리하고, PHOL 염색액으로 염색한 Microsporum canis는 현미경으로 자세히 관찰했을 때 형태학 적인 차이를 나타내지 않았다. 말에 있어서 옥도정기와 사람에 있어서 miconazole에 의한 국 소 요법은 효과적이었다. 병력은 관리인이 말로부터 감염된 것을 제시하였다.

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Changes in the Clinical and Epidemiological Characteristics of Trichophyton verrucosum Infection

  • Lee, Hyun Ji;Kim, Seok Min;Eun, Dong Hyuk;Lee, Weon Ju;Bang, Yong Jun;Jun, Jae Bok
    • Journal of Mycology and Infection
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    • v.23 no.4
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    • pp.99-104
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    • 2018
  • Background: Trichophyton verrucosum (T. verrucosum) is a zoophilic dermatophyte that causes ringworm in cattle and is prevalent worldwide. This dermatophyte may be responsible for various conditions, especially inflammatory skin lesions. Objective: In this study, we aimed to investigate the changes in the clinical and epidemiological characteristics of T. verrucosum infections in southeastern Korea. Methods: A total of 34 patients who visited the Catholic Skin Clinic and the Kyungpook National University Hospital in Daegu, Korea from 2005 to 2017 were diagnosed with T. verrucosum infection. The diagnosis was confirmed using fungal culture. The data were based on a retrospective survey of the medical records. Results: The annual incidence of T. verrucosum infection was very low. There was no difference in the sexual incidence. T. verrucosum infection was most common among subjects in their fifties and sixties. The highest incidence was during the month of September. The arm was most frequently involved, followed by the face. This infection was predominant in patients living in rural areas. Conclusion: These clinicoepidemiological findings provide useful information for understanding the changes in the infection caused by T. verrucosum. In particular, it was interesting to note that the incidence was very low, majority of the affected subjects were in their fifties and sixties, and the most commonly affected site was the arm.

Pharmacological Screening of Crude Extracts from Medicinal Plants (II)

  • Yook, Chan-Nam;Lee, Jae-Sug;Baek, Seung-Hwa
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.21 no.4
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    • pp.1004-1009
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    • 2007
  • The effects of crude extracts from medicinal plants on biological activity were investigated. The crude ethanol extract of H. paucistipula inhibited the growth of the Gram positive bacterium Bacillus subtilis ATCC 19659, (2 mm inhibition zone at 150 ${\mu}g$/disc) and the dermatophyte Trichophyton mentagrophytes ATCC 28185, (7 mm inhibition zone at 150 ${\mu}g$/disc), and toxic to P388 murine leukaemia cells ($IC_{50}\;2.48\;{\mu}g/ml$ at 75 ${\mu}g$/disk). This crude ethanol extract of H. paucistipula is the strongest antimicrobial and cytotoxic activities against P388 murine leukaemia cells (ATCC CCL 46 P388D1).

The Clinical and Epidemiological Studies of Epidermophyton floccosum Infections(1998~2007) (최근 10년간 Epidermophyton floccosum의 감염 상태(1998-2007))

  • Bang, Young-Jun;Kim, Ssang-Young
    • Korean Journal of Clinical Laboratory Science
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    • v.41 no.2
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    • pp.57-61
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    • 2009
  • Epidermophyton floccosum was known to be a frequently isolated dermatophyte agent of dermatophytosis in Korea, which regularly responsible for a small percentage of tinea cruris, tinea pedis, tinea corporis and onychomycosis. The purpose of this study was to investigate epidemiologic aspects of E. floccosum isolated in 71 patients from January 1998 to December 2007. The incidence of E. floccosum. was 0.07% out of a total of 107,026 dermatophytosis. The ratio of male to female patients was 6.9:1. Involved tinea were tinea cruris 44 (62.0%), tinea pedis 20 (28.2%), tinea corporis 2 (2.8%), tinea manus 2 (2.8%), tinea unguium 2 (2.8%), tinea faciale 1 (1.4%).

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