Continuous increase of Trichophyton tonsurans at the expense of Microsporum audouinii var. langeronii as a cause of tinea capitis in the urban area of Paris: A five-year long study

2016 ◽  
Vol 26 (2) ◽  
pp. e11 ◽  
Author(s):  
M. Gits-Muselli ◽  
M. Benderdouche ◽  
A. Mingui ◽  
S. Hamane ◽  
N. Guigue ◽  
...  
Keyword(s):  
Urban Area ◽  
Tinea Capitis ◽  
Trichophyton Tonsurans ◽  
Continuous Increase ◽  
Microsporum Audouinii

scholarly journals Molecular Characterisation and Phylogenetic Analysis of Dermatophytic Fungi Isolated from Tinea Capitis in Northwest Nigeria Using Sequence of the 28S rRNA

2021 ◽  
Vol 12 (3) ◽  
pp. 646-655
Author(s):  
Hussain Yahaya Ungo-kore ◽  
Joseph Olorunmola Ehinmidu ◽  
Josiah Ademola Onaolapo ◽  
Olayeni Stephen Olonitola
Keyword(s):  
Phylogenetic Analysis ◽  
Tinea Capitis ◽  
28S Rdna ◽  
Clinical Samples ◽  
28S Rrna ◽  
Trichophyton Tonsurans ◽  
Detection And Identification ◽  
Microsporum Audouinii ◽  
Trichophyton Simii ◽  
Dermatophyte Species

The detection and identification of fungal DNA from clinical samples is one of the fundamental approaches in biomedicine. The incidence, distribution, and control of dermatophytes has progress significantly and the use of phylogenetic species concepts based on rRNA regions have enhanced the taxonomy of dermatophyte species; however, the use of 28S rDNA genes has certain limitations. This gene has been used in dermatophyte taxonomy with limited enumeration; we appraised the sequence disparity within and among groups of the species, the gene ranking in identification, phylogenetic analysis, and taxonomy of 32 strains of eight dermatophyte species. In this study, a set of primers was adopted to amplify the target followed by a partial sequencing of the rDNA. The utilization of a pairwise nucleotide differentiation, an affinity was observed among eight dermatophyte species, with disparity among species ranging from 0 to 197 base pair (bp). Intra-species bp differences were found within strains of Trichophyton eriotrephon, Trichophyton bullosum, Trichophyton simii (Trichophyton genus), Microsporum audouinii, and Trichophyton tonsurans (Microsporum and Trichophyton genus, respectively); however, only some strains of Trichophyton eriotrephon were found to be invariant having three genotypes. Trichophyton tonsurans exhibited most intra-species variability. The characterization and construction of a phylogenetic tree of 28S rDNA gene on dermatophyte species provide a bedrock of an additional finding of connections between species. However, 28S rRNA capture provides a novel method of effective and sensitive detection of dermatophytes lodged in human skin scale. We report for the first time the emergence of T. eriotrephon, T. bullosum, T. simii, T. benhamiae, and Ctenomyces serratus dermatophytes from Tinea capitis in Nigeria.

Tinea capitis. Emergencia de Microsporum audouinii y Trichophyton tonsurans en la República Dominicana

2010 ◽  
Vol 101 (4) ◽  
pp. 330-335 ◽  
Author(s):  
R. Arenas ◽  
E. Torres ◽  
M. Amaya ◽  
E.R. Rivera ◽  
A. Espinal ◽  
...  
Keyword(s):  
Tinea Capitis ◽  
Trichophyton Tonsurans ◽  
Microsporum Audouinii

scholarly journals Continuous increase ofTrichophyton tonsuransas a cause of tinea capitis in the urban area of Paris, France: a 5-year-long study

2016 ◽  
pp. myw107 ◽  
Author(s):  
Maud Gits-Muselli ◽  
Mazouz Benderdouche ◽  
Samia Hamane ◽  
Anselme Mingui ◽  
Martine Feuilhade de Chauvin ◽  
...  
Keyword(s):  
Urban Area ◽  
Tinea Capitis ◽  
Continuous Increase

Dermatophyten-Infektionen der Haut, Haare und Nägel bei Kindern – ein Update

2013 ◽  
Vol 13 (04) ◽  
pp. 262-269 ◽  
Author(s):  
C. Krüger ◽  
I. Schulze ◽  
B. Lietzberg ◽  
H. Friedlein ◽  
G. Ginter-Hanselmayer ◽  
...  
Keyword(s):  
Tinea Capitis ◽  
Trichophyton Mentagrophytes ◽  
Microsporum Canis ◽  
Trichophyton Verrucosum ◽  
Trichophyton Tonsurans ◽  
Arthroderma Benhamiae ◽  
Trichophyton Erinacei ◽  
Microsporum Audouinii ◽  
Tinea Gladiatorum ◽  
Zoophile Dermatophyten

ZusammenfassungDas klinische Spektrum und die Erreger der Dermatophytosen unterscheiden sich deutlich zwischen Kindern und Erwachsenen. Im Gegensatz zu Erwachsenen, bei denen die Tinea pedis die häufigste Pilzinfektion der Haut darstellt, werden bei Kindern vor allem die Tinea corporis und Tinea capitis diagnostiziert. Eine neue und beunruhigende Entwicklung ist die Zunahme der Onychomykose – meist durch Trichophyton rubrum – im Kindesalter. Die Tinea capitis stellt eine diagnostische und vor allem therapeutische Herausforderung für Kinderärzte und auch Dermatologen dar. Erreger der Tinea capitis sind in Deutschland vorzugsweise zoophile Dermatophyten. An erster Stelle steht Microsporum canis, das Verhältnis verschiebt sich jedoch mehr und mehr zu den zoophilen Trichophyton-Arten, z. B. Trichophyton interdigitale (früher Trichophyton mentagrophytes). Trichophyton species von Arthroderma benhamiae ist ein neuer Erreger, der im Kindesalter wahrscheinlich mittlerweile alle anderen zoophilen Dermatophyten in Bezug auf die Häufigkeit überflügelt hat. Seltener werden Trichophyton verrucosum – Erreger der „Kälberflechte“ – und Trichophyton erinacei („Igelpilz“) isoliert. Anthropophile Erreger, wie Microsporum audouinii und Trichophyton tonsurans, müssen Anlass sein, nach der Infektionsquelle zu fahnden. Das kann ein familiärer Immigrationshintergrund sein oder auch die Infektion in einem Kampfsportverein (Tinea gladiatorum capitis et corporis).

Prevalence of Undetected Tinea Capitis in Household Members of Children with Disease

PEDIATRICS ◽  
1993 ◽  
Vol 92 (1) ◽  
pp. 155-157
Author(s):  
KAREN VARGO ◽  
BERNARD A. COHEN
Keyword(s):  
Tinea Capitis ◽  
The United States ◽  
Hair Shaft ◽  
School Age Children ◽  
Microsporum Canis ◽  
Trichophyton Tonsurans ◽  
The Past ◽  
Microsporum Audouinii ◽  
Household Members ◽  
Black School

The epidemiology of tinea capitis has changed over the past 40 years. The major organism responsible for tinea capitis today is Trichophyton tonsurans. This dermatophyte accounts for more than 90% of ringworm infections of the scalp in the United States and replaces Microsporum audouinii and to a lesser extent Microsporum canis, which were associated with the ringworm epidemics of the 1940s.1-4 Trichophyton tonsurans is an anthropophilic organism producing endothrix invasion of the hair shaft that does not fluoresce on Wood's light examination.5 Tinea capitis is epidemic in black school-age children, but only rarely in whites. The reason for this racial predilection is not known.1

scholarly journals Adult black dot tinea capitis caused by Trichophyton tonsurans complicated with herpes zoster

2020 ◽  
Vol 133 (1) ◽  
pp. 91-93
Author(s):  
Yu-Shi Zheng ◽  
Xian-Yi Zhou ◽  
Juan Luo ◽  
Yong-Xuan Hu ◽  
Kang-Xing Liu ◽  
...  
Keyword(s):  
Herpes Zoster ◽  
Tinea Capitis ◽  
Black Dot ◽  
Trichophyton Tonsurans

scholarly journals Tinea capitis: epidemiologia e ecologia dos casos observados entre 1983 e 2003 na Faculdade de Medicina de Botucatu, Estado de São Paulo, Brasil

2005 ◽  
Vol 80 (6) ◽  
pp. 597-602 ◽  
Author(s):  
Silvio Alencar Marques ◽  
Rosangela Maria Pires de Camargo ◽  
Aline Helena Gonzáles Fares ◽  
Renata Mayumi Takashi ◽  
Hamilton Ometto Stolf
Keyword(s):  
Tinea Capitis ◽  
Sao Paulo ◽  
Microsporum Canis ◽  
São Paulo ◽  
Trichophyton Tonsurans ◽  
De Medicina

FUNDAMENTOS: Tinea capitis é importante infecção fúngica de interesse dermatológico e pediátrico. No Brasil sua prevalência é desconhecida, e os agentes causais principais são o Trichophyton tonsurans nas regiões Norte-Nordeste e o Microsporum canis no Sul-Sudeste do país. Conhecimento sobre gênero e espécies mais prevalentes tem importância sanitária e terapêutica. OBJETIVOS: Identificar espécies de dermatófitos, causa de Tinea capitis, em serviço universitário que atende clientela do Sistema Único de Saúde, de procedência urbana e rural, no interior do Estado de São Paulo. MÉTODOS: Amostras de casos clínicos suspeitos de Tinea capitis, procedentes da área de abrangência da Faculdade de Medicina de Botucatu-Unesp, foram investigadas por exame direto e cultivo visando ao diagnóstico e isolamento do agente causal. RESULTADOS: De 1.055 suspeitas, 594 foram confirmadas por exame direto, em 364 (61,1%) isolou-se o agente: M. canis em 88,2%, seguindo-se T. tonsurans (4,7%), T. rubrum (3,3%), M. gypseum (1,9%), T. mentagrophytes (1,6%). O sexo masculino correspondeu a 55,7% dos casos, e a faixa etária entre 0-5 anos predominou com 62,6% (p < 0,05). CONCLUSÕES: A prevalência detectada do M. canis superou o esperado para a Região Sudeste do Brasil. A freqüência de 88,2% pode estar influenciada por pacientes procedentes da zona rural. Esse dado deve ser considerado quando de decisão terapêutica.

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