Two Cases of Dermatophytoses Caused by Arthroderma benhamiae.

Imafuku, Takeshi; Nishimoto, Katsutaro

doi:10.2336/nishinihonhifu.64.732

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…We collected 23 Japanese strains of A. benhamiae, including the first isolates (5,6) from 1996, some of which had been documented in the literature (19)(20)(21)(22)(23)(24)(25)(26). These strains were speculated to have been imported from abroad after the survey in 1980 (4).…”

Section: Discussionmentioning

confidence: 99%

Molecular Epidemiology of a Major Subgroup of Arthroderma benhamiae Isolated in Japan by Restriction Fragment Length Polymorphism Analysis of the Non-Transcribed Spacer Region of Ribosomal RNA Gene

et al. 2012

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SUMMARY: Arthroderma benhamiae vectored by small animals, such as household pets, causes tinea lesions on human skin. The number of tinea cases caused by this species is increasing in Japan. We attempted to develop a simple molecular method for strain discrimination, which is expected to be useful in molecular epidemiology. Out of the 61 strains of A. benhamiae registered at our institute, 46 A. benhamiae strains showed very high degrees of sequence similarity on cluster analysis of the internal transcribed spacer regions of ribosomal RNA (rRNA) genes. These 46 strains, including 22 strains isolated from Japan, were further used for strain typing by analyzing the non-transcribed spacer (NTS) region of the rRNA gene. Polymerase chain reaction was performed using a primer pair designed for amplification of a part of the NTS region, and the amplicons were successfully discriminated by restriction fragment length polymorphism (RFLP) analysis performed using MvaI. RFLP analysis showed 11 NTS types (NTS1-NTS11) among the 46 strains. Out of the 22 Japanese strains, 10 were of the NTS8 type; 6, of the NTS1 type; 3, of the NTS2 type; and 3, of the NTS5 type. Molecular typing showed consistency of NTS types among the strains isolated from different lesions on the same patient, among the strains derived from the same family, and among the strains from pets and their owners. We observed that 3 out of the 4 NTS types among the Japanese strains were detected outside Japan as well.

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Section: Discussionmentioning

confidence: 99%

Molecular Epidemiology of a Major Subgroup of Arthroderma benhamiae Isolated in Japan by Restriction Fragment Length Polymorphism Analysis of the Non-Transcribed Spacer Region of Ribosomal RNA Gene

et al. 2012

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“…We conducted a literature review of clinical cases of tinea caused by A. benhamiae (limited to genotypes I and II, excluding Type III and T. erinacei) in Japan. We identified 26 cases, including our own, reported since 2000 [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. Among these cases, 21 were female, and five were male [16,19,24,29].…”

Section: Epidemiology and Clinical Impact Of T Benhamiae Var Luteum I...mentioning

confidence: 99%

“…Nineteen of the 26 cases were aged under 30 years old. There were familial instances, including three parent-child cases [15,16,20] and two sibling cases [26,28]. Of the 26 cases, 20 individuals owned pets.…”

Section: Epidemiology and Clinical Impact Of T Benhamiae Var Luteum I...mentioning

confidence: 99%

A Case of Tinea Corporis Caused by Trichophyton benhamiae var. luteum from a Degu and Evolution of the Pathogen’s Taxonomy

Tanabe,

Abe,

Anzawa

2023

JoF

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Background: Trichophyton benhamiae, an anthropophilic dermatophyte, can cause dermatophytosis in humans and animals with rising zoonotic infections through pets, primarily in Europe. Dermatophytosis from T. benhamiae is often misdiagnosed due to its inflammatory symptoms. We report a case of tinea corporis from T. benhamiae var. luteum in a Japanese woman, contracted from pet Czech degus. Case: The 40-year-old patient developed neck papules resembling acne. Initial treatment with topical antibiotics and steroids exacerbated the rash. Fungal elements were not detected by direct potassium hydroxide examination. Skin biopsy confirmed fungal elements in the stratum corneum and hair follicles, and tinea corporis was diagnosed. Oral terbinafine 125 mg was initiated without topical agents. Erythematous papules appeared on her limbs, determined as a trichophytid reaction. After two months, her skin improved significantly. Fungal culture identified T. benhamiae var. luteum colonies with a yellowish hue. Mating tests classified the strain as Americano-European race (−) with MAT1-1 genotype. This was diagnosed as tinea corporis from T. benhamiae var. luteum, likely transmitted from pet Czech degus. Conclusions: The incidence rate of pet-transmitted cutaneous fungal infections may increase in Japan with the trend to keep exotic pets. Dermatologists must recognize dermatophytosis clinical features from anthropophilic dermatophytes to prevent misdiagnosis and understand evolving nomenclature and pathogenesis.

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Tinea Faciei and Corporis in a Mother-and-child Pair of Patients Caused by Trichophyton mentagrophytes Molecularly Typed as Arthroderma vanbreuseghemii

華子¹,

英和²,

勝太郎³

2012

Nishinihon J Dermatol

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Two Cases of Dermatophytoses Caused by Arthroderma benhamiae.

Cited by 3 publications

References 8 publications

Molecular Epidemiology of a Major Subgroup of Arthroderma benhamiae Isolated in Japan by Restriction Fragment Length Polymorphism Analysis of the Non-Transcribed Spacer Region of Ribosomal RNA Gene

Molecular Epidemiology of a Major Subgroup of Arthroderma benhamiae Isolated in Japan by Restriction Fragment Length Polymorphism Analysis of the Non-Transcribed Spacer Region of Ribosomal RNA Gene

A Case of Tinea Corporis Caused by Trichophyton benhamiae var. luteum from a Degu and Evolution of the Pathogen’s Taxonomy

Tinea Faciei and Corporis in a Mother-and-child Pair of Patients Caused by Trichophyton mentagrophytes Molecularly Typed as Arthroderma vanbreuseghemii

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