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1.
Biomédica (Bogotá) ; 43(Supl. 1): 245-254, ago. 2023. tab, graf
Article in Spanish | LILACS | ID: biblio-1533894

ABSTRACT

Introducción. Las dermatofitosis son infecciones fúngicas superficiales de epitelios queratinizados. La tinea capitis es una de ellas y afecta a poblaciones escolares vulnerables. Carpinelo es un barrio del área periférica de Medellín con precarias condiciones socioeconómicas. Ante la sospecha de un brote de dermatofitosis, los afectados fueron evaluados. Objetivo. Evaluar clínica y microbiológicamente pacientes del barrio Carpinelo con sospecha de micosis cutáneas para determinar la presencia de un brote por dermatofitos. Materiales y métodos. Se llevó a cabo un estudio descriptivo, de corte longitudinal, con muestreo a conveniencia. Se hizo una búsqueda activa de casos en el Jardín Educativo Buen Comienzo de Carpinelo en niños de la institución y sus familiares. Se evaluaron clínicamente y se tomaron muestras de escamas y cabellos para exámenes directos y cultivos microbiológicos. Se analizó el perfil demográfico, clínico y micológico, con el programa estadístico SPSS™, versión 25. Resultados. Se estudiaron 57 pacientes, 47 eran menores de edad con una media de edad de seis años; se observó una proporción de hombres y mujeres de 2:1. Los pacientes con resultados positivos se diagnosticaron con tinea capitis (78,95 %), tinea faciei (15,79 %) y tinea corporis (10,52 %). El 75,43 % de los pacientes recibió tratamiento previo y de estos el 69,73 % fue con esteroides. El examen directo fue positivo en el 53,84 % y los cultivos en el 46,5 % de los casos. Los agentes aislados fueron: Microsporum canis (77,77 %), Trichophyton spp. (11,11 %), Trichophyton rubrum (5,55 %) y Malassezia spp. (5,55 %). Conclusión. Tinea capitis fue la presentación clínica más común y M. canis el dermatofito más frecuentemente aislado. Llamó la atención el uso de esteroides como primera y única opción del tratamiento empírico' lo cual resalta la importancia del diagnóstico microbiológico para proporcionar la terapia apropiada.


Introduction. Dermatophytoses are superficial fungal infections of the keratinized epithelium like tinea capitis. The latte mainly affects school-vulnerable populations. Carpinelo is a peripheral neighborhood in Medellín with poor socioeconomic conditions and where a suspected tinea capitis outbreak took place. Objective. To study and characterize, clinically and microbiologically, patients with suspected dermatophytosis in Carpinelo. Materials and methods. We carried out a descriptive and longitudinal study with an active case search of tinea capitis in children and their relatives from the Jardín Educativo Buen Comienzo community in Carpinelo. Patients were clinically evaluated, and samples of scales and hair were taken to perform mycological studies with a 10 % potassium hydroxide and culture in Sabouraud and Mycosel agar. We analyzed the data with the statistical program SPSS™. 25 version. Results. Fifty-seven individuals were studied: 47 were children with a mean age of six years and a ratio of 2:1 male to female. Patients with confirmed diagnosis presented the following clinical forms: tinea capitis (78.95%), tinea faciei (15.79%) or tinea corporis (10.52%). Out of the total, 69.76% of the patients had previous treatment with steroids. The direct test was positive in 53.84% of the samples, and 46.15% had positive cultures. The isolated species were: Microsporum canis (77.77%), Trichophyton spp. (11.11%), Trichophyton rubrum (5.55%), and Malassezia spp. (5.55 %). Conclusion.Tinea capitis was the most common clinical form, and M. canis was the most frequently isolated species. The use of steroids as the first and only option for empiric treatment was worth of notice. The findings of this study point out the importance of microbiological diagnosis in choosing the best treatment for the patients.


Subject(s)
Tinea , Dermatomycoses , Tinea Capitis , Disease Outbreaks
2.
In. Pradines Terra, Laura; García Parodi, Lucía; Bruno, Lorena; Filomeno Andriolo, Paola Antonella. La Unidad de Pie Diabético del Hospital Pasteur: modelo de atención y pautas de actuación: importancia del abordaje interdisciplinario. Montevideo, Cuadrado, 2023. p.165-183, ilus.
Monography in Spanish | LILACS, UY-BNMED, BNUY | ID: biblio-1418715
3.
Bol. malariol. salud ambient ; 62(6): 1266-1271, dic. 2022. tab., ilus.
Article in Spanish | LILACS, LIVECS | ID: biblio-1427572

ABSTRACT

La esporotricosis es una micosis subcutánea causada por la inoculación traumática en la piel de especies de hongos del género Sporothrix. La enfermedad tiene diferentes manifestaciones clínicas (cutáneas, linfocutáneas y diseminadas), y también puede progresar a una infección sistémica. A pesar de tener una distribución mundial, la esporotricosis es más frecuente en los países tropicales y subtropicales. La esporotricosis es la micosis subcutánea más frecuente en América Latina, donde se considera endémica. Ciertos grupos de personas pueden estar más expuestos al agente causal de la enfermedad, como los agricultores. Así, este trabajo tuvo como objetivo determinar la prevalencia de la esporotricosis en 3.133 agricultores, en el cantón de Shushufindi de la provincia de Sucumbíos, Ecuador. En este estudio, se utilizó una prueba de intradermorreacción con el antígeno esporotriquina obtenido del hongo Sporothrix schenckii. Los datos obtenidos mostraron una prevalencia de 35,45%. La distribución de la prevalencia de la esporotricosis con respecto a los grupos de edad no mostró diferencias estadísticas significativas (p=0,2054). Para la variable sexo, si hubo significancia estadística (p=0,01995). 51 de los casos positivos presentaron gomas y/o úlceras en alguno de sus miembros. La esporotricosis ha demostrado ser una de las micosis subcutáneas más frecuente en los trabajadores de la agricultura en la región ecuatoriana evaluada(AU)


Sporotrichosis is a subcutaneous mycosis caused by traumatic skin inoculation of fungal species of the genus Sporothrix. The disease has different clinical manifestations (cutaneous, lymphocutaneous, and disseminated), and it can also progress to a systemic infection. Despite having a worldwide distribution, sporotrichosis is more common in tropical and subtropical countries. Sporotrichosis is the most frequent subcutaneous mycosis in Latin America, where it is considered endemic. Certain groups of people may be more exposed to the causative agent of the disease, such as farmers. Thus, this work aimed to determine the prevalence of sporotrichosis in 3133 farmers, in the canton of Shushufindi in the province of Sucumbíos, Ecuador. In this study, an intradermal test was used with the sporotrichin antigen obtained from the fungus Sporothrix schenckii. The data obtained showed a prevalence of 35.45%. The distribution of the prevalence of sporotrichosis with respect to age groups did not show significant statistical differences (p=0.2054). For the sex variable, there was statistical significance (p=0.01995). 51 of the positive cases presented gums and/or ulcers in one of their members. Sporotrichosis has proven to be one of the most frequent subcutaneous mycoses in agricultural workers in the evaluated Ecuadorian region(AU)


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Young Adult , Sporotrichosis/epidemiology , Dermatomycoses/epidemiology , Farmers/statistics & numerical data , Occupational Risks , Intradermal Tests , Epidemiology, Descriptive , Prevalence , Cross-Sectional Studies , Ecuador/epidemiology , Age and Sex Distribution
4.
Arch. argent. pediatr ; 120(3): e128-e132, junio 2022. ilus
Article in Spanish | LILACS, BINACIS | ID: biblio-1368469

ABSTRACT

El Microsporum gypseum es un hongo geofílico que puede producir lesiones cutáneas inflamatorias en personas sanas. Se han descripto lesiones más extensas en pacientes inmunocomprometidos. Se presenta el caso de un paciente con dermatofitosis, con exámenes micológicos positivos para Candida sp, Epidermophytom floccosum y Trichophyton tonsurans, al que, ante la mala respuesta al tratamiento con griseofulvina e itraconazol a dosis habituales, se le realizó biopsia cutánea para cultivo que evidenció la presencia de M. gypseum. Debido a la extensión y a la mala respuesta al tratamiento, se realizó evaluación inmunológica y se diagnosticó un defecto en STAT1 con ganancia de función (STAT1-GOF). Los pacientes que tienen esta inmunodeficiencia primaria son susceptibles a las infecciones micóticas, especialmente por Candida, pero también, aunque en menor medida, a virus y bacterias. El paciente aquí presentado recibió tratamiento prolongado con antimicóticos imidazólicos sistémicos, con resolución de las lesiones.


Microsporum gypseum is a geophilic fungus that can cause inflammatory skin lesions in heathy people. More extensive lesions have been described in immunocompromised patients. We present a patient with extensive dermatophytosis, which mycological examination led the identification of Candida sp, Epidermophyton Floccosum and Trichophyton tonsurans and showed poor response to treatment with griseofulvina and itraconazol at usual doses. When skin biopsy was performed, it had positive culture for M. gypseum. Due to the extension and poor response to treatment, immunological assessment was performed and it showed a defect of STAT1 with gain of function (STAT 1-GOF). Patients with primary immunodeficiency are susceptible to fungal infections, especially Candida but also virus and bacteria, although to a lesser extent. The patient received long-term treatment with systemic imidazole antifungal recovering for the lesions.


Subject(s)
Humans , Male , Child , Tinea/diagnosis , Tinea/microbiology , Tinea/drug therapy , Dermatomycoses/diagnosis , Dermatomycoses/microbiology , Dermatomycoses/drug therapy , Trichophyton , Arthrodermataceae , Microsporum
5.
Malaysian Journal of Dermatology ; : 58-65, 2022.
Article in English | WPRIM | ID: wpr-962004

ABSTRACT

Background@#Cutaneous disorders are common clinical manifestations of the Human Immunodeficiency Virus (HIV). In the era of antiretroviral therapy (ART), the spectrum of cutaneous disorders in HIV-infected patients has changed. We assessed the types of dermatoses, including cutaneous infections in HIVpositive patients and the association between the peripheral CD4 cell count and the severity of skin infection.@*Methods@#All HIV-positive patients referred to the Dermatology Department of Hospital Sungai Buloh from January 2021 – December 2021 were enrolled in a prospective cross-sectional study. Patients were subjected to a complete medical and physical examination and appropriate investigation to confirm the diagnosis. @*Results@#A total of 112 (92.6%) male and 9 (7.4%) female patients with a mean age of 38.76 ± SD years participated. The majority of patients were Malay (56.2%), with MSM (54.5%) being the commonest mode of transmission. 65.2% of patients had CD4≥350 cells/ mm3 and 86.7% of patients were on ART. Infections (56.1%) were the most common group of mucocutaneous manifestations, with 45.6% of these due to viral infections. There was no statistically significant correlation between the CD4 count and the severity of skin involvement in bacterial (p=0.302), viral (p=0.145) and fungal (p=0.533) infections.@*Conclusion@#Viral infection were the commonest cutaneous manifestations in HIV- positive patients. The frequency and severity of the cutaneous infections were much more common in patients with more advanced immunosuppression.


Subject(s)
HIV Infections , Dermatomycoses
6.
Rev. patol. trop ; 51(2): 97-115, 2022. ilus
Article in English | LILACS | ID: biblio-1413121

ABSTRACT

Chromoblastomycosis is a skin infection caused by dematiaceous fungi, characterized by a verrucous plaque on the limbs. It mainly affects rural workers in tropical countries. The purpose of this review is to identify how the diagnostic methods used in the propaedeutic of chromoblastomycosis emerged and were developed. The MeSH terms "chromoblastomycosis" or "chromomycosis" or "verrucous dermatitis" and "diagnosis" were used to search articles indexed in MEDLINE and LILACS databases. The description of a first-time-used method in diagnosing chromoblastomycosis or modifications and innovations in an existing technique was the criteria used to deem the article eligible. The first methods described in diagnosing chromoblastomycosis were histopathological examination and culture, which characterizes and defines the disease in the early 20th century. Subsequently, they were described as direct microscopic examination, fine needle aspiration for cytology, electron microscopy, serology, molecular tests, scintigraphy, nuclear magnetic resonance and dermoscopy. Tests based on the direct identification of the fungus through biopsy, culture, or direct microscopy are the oldest and more employed methods for diagnosing chromoblastomycosis. The polymerase chain reaction was introduced in the last few decades and is a promising technique. Dermoscopy of chromoblastomycosis shows blackish red dots and white and pink areas along with scaling. Other techniques, such as serology and skin testing for delayed-type hypersensitivity, have not been incorporated into clinical practice


Subject(s)
Skin , Chromoblastomycosis/diagnosis , Dermatomycoses , Fungi
8.
An. bras. dermatol ; 96(4): 482-484, July-Aug. 2021. graf
Article in English | LILACS | ID: biblio-1285084

ABSTRACT

Abstract The species of the Cryptococcus neoformans complex show different epidemiological patterns in the infection of immunosuppressed or immunocompetent individuals, and a common tropism peculiarity for the central nervous system. Primary cutaneous cryptococcosis is a rare clinical entity, with manifestations that are initially restricted to the skin through fungal inoculation, and the absence of systemic disease. The authors report in the present study the case of a 61-year-old immunocompetent man, with a rapidly evolving mucoid tumor on abrasions in contact with bird droppings on the forearm. The early identification of the polymorphic skin manifestations and treatment are crucial for the favorable prognosis of the infection, which can be life-threatening.


Subject(s)
Humans , Male , Cryptococcosis/diagnosis , Cryptococcosis/drug therapy , Cryptococcus neoformans , Dermatomycoses/diagnosis , Dermatomycoses/drug therapy , Skin , Immunocompromised Host , Early Diagnosis , Middle Aged
9.
An. bras. dermatol ; 96(3): 349-351, May-June 2021. graf
Article in English | LILACS | ID: biblio-1285054

ABSTRACT

Abstract Sporotrichosis is a subcutaneous mycosis that affects humans and animals, with a typically subacute or chronic evolution, caused by Sporothrix spp., a dimorphic fungus. Although the cutaneous form is the most frequent presentation, the ocular involvement has been more frequently diagnosed in endemic areas, affecting mainly children and the elderly. Approximately 80% of affected patients have the lymphocutaneous form, while only 2.3% have conjunctival lesions, with 0.7% showing primary ocular involvement. We describe two cases of sporotrichosis with ocular involvement in children through inoculation by felines, with a good response to antifungal treatment.


Subject(s)
Humans , Animals , Child , Aged , Cats , Sporotrichosis/diagnosis , Sporotrichosis/drug therapy , Sporothrix , Dermatomycoses/drug therapy , Eye , Antifungal Agents/therapeutic use
10.
Biomédica (Bogotá) ; 41(2): 240-246, abr.-jun. 2021. graf
Article in Spanish | LILACS | ID: biblio-1339263

ABSTRACT

Resumen | El síndrome verrugoso tropical comprende condiciones cutáneas infecciosas, crónicas y granulomatosas que cursan con placas, nódulos o úlceras verrugosas, de ahí su nombre. Este síndrome incluye la cromoblastomicosis, la esporotricosis, la paracoccidioidomicosis, la lobomicosis, la leishmaniasis y la tuberculosis cutánea verrugosa, todas ellas enfermedades de amplia distribución en áreas tropicales y subtropicales. Sus diagnósticos pueden ser difíciles y confundirse entre sí, lo cual es más frecuente entre la esporotricosis y la leishmaniasis. Para distinguirlas se recurre a criterios clínicos y epidemiológicos, y a métodos diagnósticos como intradermorreacción, examen directo, biopsia, cultivo, inmunofluorescencia y PCR, algunos de los cuales no son de uso común. El diagnóstico preciso conduce al tratamiento adecuado. Se presenta el caso de un hombre de 18 años con extensas placas verrugosas en una rodilla, inicialmente interpretadas como leishmaniasis verrugosa por la clínica, la epidemiología y la biopsia. Se le trató con Glucantime® durante 20 días, pero no presentó mejoría, por lo que se tomó una nueva biopsia que también se interpretó como leishmaniasis cutánea. La revisión de ambas biopsias evidenció inflamación con granulomas abscedados y presencia de cuerpos asteroides esporotricósicos, que condujeron al diagnóstico de esporotricosis, el cual se confirmó luego con el cultivo del hongo. Las lesiones remitieron con la administración de itraconazol. La clínica y la epidemiología de la leishmaniasis y las de la esporotricosis pueden ser semejantes, por lo que la biopsia y los estudios de laboratorio son esenciales para establecer el diagnóstico. El cuerpo asteroide esporotricósico es patognomónico de esta entidad. Se revisaron los conceptos esenciales de estas condiciones y los criterios para diferenciarlas.


Abstract | The tropical verrucous syndrome includes infectious, chronic, and granulomatous skin conditions appearing with plaques, nodules, or ulcers with a warty surface which gives name to the syndrome. It includes forms of chromoblastomycosis, sporotrichosis, paracoccidioidomycosis, lobomycosis, leishmaniasis, and tuberculosis verrucosa cutis with ample distribution in tropical and subtropical areas. The diagnoses may be difficult and confused among them, especially between sporotrichosis and leishmaniasis. Clinical, epidemiologic, intradermal reactions, direct smears, skin biopsies, cultures, immunofluorescence, and PCR are used to differentiate them, although several of these methods are not commonly used. We present an 18-year-old man with extensive verrucous plaques in one knee interpreted by clinic, epidemiology, and biopsy as verrucous cutaneous leishmaniasis. He was treated with Glucantime® for 20 days without improvement. A new biopsy was made that was also interpreted as cutaneous leishmaniasis. The revision of both biopsies showed inflammation with abscessed granulomas and asteroid sporotrichotic bodies at the center of the granulomas that led to the diagnosis of sporotrichosis later confirmed by the fungus culture. The patient responded to the treatment with itraconazole. As clinical and epidemiological findings of leishmaniasis and sporotrichosis can be similar, skin biopsy and other paraclinical studies are necessary to establish a proper diagnosis. The asteroid sporotrichotic body is pathognomonic of this mycosis. We review here the essential concepts of leishmaniasis and sporotrichosis and the criteria to differentiate them.


Subject(s)
Sporotrichosis , Leishmaniasis, Cutaneous , Dermatomycoses , Mycoses
11.
Malaysian Journal of Microbiology ; : 576-587, 2021.
Article in English | WPRIM | ID: wpr-973864

ABSTRACT

Aims@#Andrographis paniculata (AP), a medicinal herb was selected to investigate the antifungal activity on selected dermatophyte fungi. The phytochemical screening was also carried out to evaluate its chemical constituents.@*Methodology and results@#The potato dextrose agar (PDA) incorporated with aqueous, ethanol and methanol AP extracts at concentrations 0.99% (v/v), 1.96% (v/v) and 7.41% (v/v) were used for selected fungi culturing; Trichophyton mentagrophytes, T. rubrum, T. interdigitale, Microsporum fulvum, M. nanum, M. gypseum, M. canis, Fusarium solani and Aspergillus fumigatus. Phytochemical screening showed the presence of flavonoids, saponins and tannins in the ethanol extract and flavonoids alone in both aqueous and methanol extracts. Studies on antifungal effects indicated that the ethanol extract significantly increased the mycelial inhibition percentage of all tested fungi, especially at a concentration of 7.41% (v/v). All ethanol AP extract concentrations inhibited M. gypseum and M. canis (p<0.05) with at least 36.00% mycelial inhibition. In aqueous AP extract, it significantly increased the mycelial inhibition of T. mentagrophytes, T. interdigitale and M. gypseum (p<0.05), while the methanol AP extract significantly inhibited all fungi at a concentration of 7.41% (v/v) except for T. rubrum, M. gypseum and F. solani (p<0.05). No spore sedimentation was recorded for the fungal spores of T. rubrum, M. nanum, T. mentagrophytes, M. gypseum and T. interdigitale at 7.41% (v/v) ethanol AP. @*Conclusion, significance and impact of study@#It is concluded that the ethanol AP extract contained phytochemical constituents and showed the highest antifungal activity. In addition, this extract has a great potential to treat dermatophytes effectively.


Subject(s)
Antifungal Agents , Phytochemicals , Andrographis paniculata , Dermatomycoses
12.
Malaysian Journal of Dermatology ; : 52-54, 2021.
Article in English | WPRIM | ID: wpr-961819

ABSTRACT

Summary@#Cutaneous serratia marcescens (S. marcescens) infection is very rare and most cases had history of skin trauma or cutaneous procedure done before. It presents in various forms like non-healing ulcers, abscess formation, nodules with an intermittent course or as granulomatous lesions, thus mimicking non-infective lesions. Antibiotic choice is challenging due to multiple antibiotic resistant strains. We are reporting a case of cutaneous S. marcescens in a 70-year old lady with diabetes mellitus presented with non-healing ulcers over the dorsum of left hand for 6 months.


Subject(s)
Serratia marcescens , Dermatomycoses
13.
Rev. Hosp. Clin. Univ. Chile ; 32(1): 17-22, 2021. tab
Article in Spanish | LILACS | ID: biblio-1252507

ABSTRACT

Superficial dermatomycosis are prevalent pathologies in the medical field and their diagnosis is fundamentally clinical. Histopathology is not considered part of his study, however, the diagnosis is exceptionally obtained by biopsy, when dermatomycosis was not suspected. Unpublished retrospective work is carried out on patients who had the histopathological diagnosis of superficial dermatomycosis between the years 2000-2019 at the HCUCH, based on selection criteria, obtaining 19 patients, in which the following were analyzed: age, gender, clinical characteristics, location, presumptive diagnosis and mycological and histological examinations. He stressed, as was our hypothesis, that dermatomycosis was not clinically suspected, since the presumptive diagnoses were various dermatoses. The most suspected dermatosis was psoriasis, as a result that 57.8% of the dermatoses studied had erythematous scaly plaques on examination. Another relevant fact is that only 21% of the cases underwent a direct mycological prior to the biopsy, which was negative ('' false negative''). It is concluded, then, that superficial dermatomycosis should be considered clinical simulators of other dermatoses, so clinical suspicion and support of mycological examination and fungal culture is essential. (AU)


Subject(s)
Humans , Male , Female , Adolescent , Adult , Middle Aged , Aged , Dermatomycoses/diagnosis , Tinea/epidemiology , Dermatomycoses/classification , Dermatomycoses/etiology , Dermatomycoses/epidemiology
14.
Rev. chil. dermatol ; 37(2): 54-57, 2021. ilus
Article in English | LILACS | ID: biblio-1411515

ABSTRACT

La dermatitis por hongos Shiitake ocurre en un pequeño porcentaje de casos luego de la ingesta de este hongo en forma cruda o semi-cruda. Se manifiesta usualmente como una dermatosis flagelada localizada principalmente en la espalda y en forma más ocasional con otro tipo de lesiones incluyendo la urticaria, petequias y una dermatitis de contacto entre otras. Este estudio describe un paciente sano de 46 años con dos tipos diferentes de reacciones al hongo, espaciadas en el tiempo. Primero está la típica dermatosis flagelada luego de la ingesta del hongo Shiitake y un tiempo después luego de que se había mejorado completamente, un segundo rash en la forma de dermatitis de contacto con descamación y prurito de las manos y dedos luego de la manipulación del hongo. Según nuestro conocimiento, este es el primer caso con dos diferentes formas de presentación clínica de reacción alérgica al hongo Shiitake en el mismo paciente


Shiitake fungal dermatitis occurs in a small percentage of cases after ingestion of this raw or semi-raw mushroom. It usually manifests as flagellated dermatosis located mainly on the back and more rarely with other types of lesions, including urticaria, petechiae, and contact dermatitis, among others. This study described a healthy 46-year-old male patient who presented two different forms of reaction to mushrooms, spaced over time. First is the typical form of flagellated dermatosis after the Shiitake mushrooms ingestion, and shortly after, when fully recovered, with a second rash in the form of contact dermatitis with desquamation and itching of hands and fingers after the mushroom manipulation. To the best of our knowledge, this is the first case reported with two different cutaneous clinical forms of allergic reaction to Shiitake mushrooms in the same patient.


Subject(s)
Humans , Male , Middle Aged , Shiitake Mushrooms , Dermatitis, Contact/diagnosis , Dermatomycoses , Urticaria , Epidemiology, Descriptive , Dermatitis, Contact/drug therapy
15.
Bol. micol. (Valparaiso En linea) ; 35(2): 15-24, dic. 2020. ilus
Article in Spanish | LILACS | ID: biblio-1437201

ABSTRACT

El término de onicomicosis se emplea para describir las infecciones de las uñas causadas por diferentes grupos taxonómicos fúngicos ya sea filamentosos como levaduriformes. A pesar de que estas patologías son causadas en los vertebrados principalmente por integrantes de la Familia Artrodermatáceae (Onygenales), la micología médica aplicó para ellos la terminología más específica de dermatofitosis, por ser un grupo ecológico de mayor importancia y presencia clínica. Las dermatomicosis de piel y fanéreos, representan un conjunto de infecciones producidas por especies fúngicas distribuidas en ambientes diversos, capaces de crecer a temperaturas de 37° y que actúan usualmente como patógenos oportunistas cuando existe generalmente un factor predisponente en el huésped. Se destaca la colonización en una uña de los pies en un hombre de 49 años por Neoscytalidium dimidiatum(Penz.) Crous & Slippers, un reconocido fitopatógeno de rápido crecimiento, común en zonas tropicales y subtropicales, que presentó la capacidad de invadir tejidos queratinizados con un aspecto clínico indistinguible de los causadas por dermatofitos. Por la rara presencia de este hongo en nuestra zona geográfica (provincia de Valparaíso, Chile), se aportan los principales datos morfofisiológicos,taxonómicos y moleculares utilizados en su diagnóstico. (AU)


The term onychomycosis is used to describe nail infections caused by different fungal taxonomic groups, either filamentous or yeast. Despite the fact that these pathologies are caused in vertebrates mainly by members of the Artrodermatáceae Family (Onygenales), medical mycology applied the more specific terminology of dermatophytosis for them, as it is an ecological group of greater importance and clinical presence. Skin and pharynx dermatomycosis represent a set of infections produced by fungal species distributed in diverse environments, capable of growing at temperatures of 37° and that usually act as opportunistic pathogens when there is a predisposing factor in the host. The colonization on a toenail in a 49-year-old man by Nesoscytalidium dimidiatumis highlighted (Penz.) Crous & Slippers, a recognized fast-growing phytopathogen, common in tropical and subtropical areas, which presented the ability to invade keratinized tissues with a clinical appearance indistinguishable from those caused by dermatophytes. Due to the rare presence of this fungus in our geographical area (Valparaíso province, Chile), the main morphophysiological, taxonomic and molecular data used in its identificationare provided. (AU)


Subject(s)
Humans , Male , Middle Aged , Ascomycota/pathogenicity , Onychomycosis/etiology , Ascomycota/cytology , Ascomycota/classification , Ascomycota/physiology , DNA/analysis , Chile , Genome Components , Dermatomycoses/diagnosis
16.
Arq. bras. med. vet. zootec. (Online) ; 72(4): 1172-1184, July-Aug. 2020. tab, ilus
Article in Portuguese | LILACS, VETINDEX | ID: biblio-1131494

ABSTRACT

Diante da carência de estudos sobre a frequência de dermatopatias que acometem cães por região geográfica no Brasil, o presente estudo objetivou conhecer a frequência das principais doenças cutâneas que afetam cães na região metropolitana de João Pessoa, Paraíba, Brasil. Os dados foram coletados de cães que passaram por atendimento dermatológico no período de setembro de 2014 a dezembro de 2016. Além dos exames clínicos e dermatológicos os cães foram submetidos a exames complementares (citológico, raspado de pele, parasitológico, tricograma, bacteriológico, micológico, histopatológico e molecular). No período do estudo, foram atendidos 1.083 cães, em que 18,65% (202/1.083) apresentavam algum tipo de dermatopatia não tumoral. Dos 202 cães acometidos, 51,49% (104/202) eram machos e 48,51% (98/202), fêmeas. Desses 202 cães, 13 tinham dois diagnósticos, totalizando 215 dermatopatias. Dos cães afetados, 62,87% (127/202) eram de raça definida e 37,13% (75/202), sem raça definida (SRD). As lesões observadas com mais frequência caracterizaram-se por áreas alopécicas, hipotricoicas, maculosas, erosivas e ulcerativas, placoides, eritematosas, assim como comedões, colaretes, seborreia. As dermatopatias parasitárias foram as mais frequentes (35,35%; 76/215), seguidas pelas dermatopatias bacterianas (24,19%; 52/215), dermatopatias alérgicas (20,00%; 43/215), dermatopatias fúngicas (17,21%; 37/215), dermatopatias por outras causas (2,32%; 5/215) e pelas dermatopatias autoimunes (0,93%; 2/215). Os exames físicos e dermatológicos, incluindo anamnese detalhada, histórico clínico apurado, associado a exames complementares, são ferramentas importantes para o diagnóstico das dermatopatias em cães. Presume-se que a frequência de dermatopatias em cães na região de estudo possa ser maior do que a observada.(AU)


Faced with the lack of studies on the frequency of dermatopathies that affect dogs by geographical region in Brazil, the present study aimed to evaluate the frequency of dermatopathies that affect the canine species in the metropolitan region of João Pessoa, Paraíba, Brazil. Data was collected from dogs that underwent dermatological care from September 2014 to December 2016. In addition to the clinical and dermatological examinations, dogs underwent complementary exams, such as cytological, skin scraping, parasitological skin examination, trichogram, bacteriological, mycological, histopathological and/or polymerase chain reaction. During the study period, 1,083 dogs were examined, in which 18.65% (202 /1,083) had some form of non-tumoral dermatopathy. Of the 202 dogs affected, 51.49% (104/202) were males and 48.51% (98/202) females. Of these 202 dogs, thirteen had two diagnoses, totaling 215 dermatopathies. 62.87% (127/202) of the affected dogs were purebred and 37.13% (75/202) were without a defined breed (WDB). The most frequently observed lesions were alopecia, hypotric, macular, erosive and ulcerative, placoid, erythematous areas, as well as comedones, collaretes and seborrhoea. The parasitic dermatopathies were the most frequent (35.35%; 76/215), followed by bacterial dermatopathies (24,19%; 52/215), allergic dermatopathies (20,00%; 43/215), dermatomycosis (17,21%; 37/215), dermatopathies for other causes (2,32%; 5/215) and autoimmune dermatopathies (0.93%; 2/215). Clinical and dermatological examination, including a detailed anamnesis, accurate clinical history and associated complementary exams are important tools for the diagnosis of dermatopathies in dogs. Available literature present some studies with canine dermatopathies frequencies superior to that obtained in the present study; however, the number of animals examined was smaller. In this survey, it was possible to establish the primary and secondary diagnoses in 100.0% of the non-tumoral dermatopathies in dogs, results higher than in previous studies. Probably, the frequency of canine dermatopathies in this region is higher than that observed, thus requiring additional studies with greater sampling.(AU)


Subject(s)
Animals , Dogs , Skin Diseases, Parasitic , Skin Diseases, Bacterial , Dermatitis, Seborrheic , Dermatomycoses , Alopecia , Brazil , Polymerase Chain Reaction/veterinary
18.
An. bras. dermatol ; 95(3): 372-375, May-June 2020. graf
Article in English | LILACS, ColecionaSUS | ID: biblio-1130880

ABSTRACT

Abstract Pseudomycetoma is an extremely rare deep mycosis, caused by dermatophytic fungi that penetrate the tissue from infected follicles of tinea capitis. Both clinically and histopathology are similar to eumycetoma, being distinguished through the isolation of the fungus, which in the case of pseudomycetoma can be Microsporum spp. or Trichophyton spp. genre. We present a 24-year-old man with an exuberant tumor in the occipital region with fistula, whose histopathological examination evidenced grains composed of hyaline hyphae and the culture for fungi isolated the agent Microsporum canis. Combined treatment of surgical excision followed by oral griseofulvin for two years was performed, with resolution of the condition.


Subject(s)
Humans , Male , Young Adult , Scalp Dermatoses/microbiology , Dermatomycoses/microbiology , Mycetoma/microbiology , Microsporum/isolation & purification , Scalp Dermatoses/surgery , Scalp Dermatoses/pathology , Treatment Outcome , Dermatomycoses/surgery , Dermatomycoses/pathology , Immunocompetence , Mycetoma/surgery , Mycetoma/pathology
19.
Rev. bras. anal. clin ; 51(4): 328-334, 2019/12/30. tab, graf
Article in Portuguese | LILACS | ID: biblio-1104016

ABSTRACT

Objetivo: Tendo em vista a possibilidade de variação na incidência e prevalência das dermatofitoses de uma região geográfica para outra, e seu potencial zoonótico, o presente trabalho teve como objetivo fornecer dados a respeito da frequência de dermatofitoses em cães na cidade de Chapecó-SC. Métodos: Avaliaram-se resultados de exames micológico direto e cultura fúngica de caninos, emitidos por um laboratório particular de análises clínicas veterinárias na cidade de Chapecó, Santa Catarina. Os dados foram coletados do sistema Multvet e analisados por meio do software IBM SPSS 22.0 através do cálculo de frequência. Resultados: No período compreendido foram solicitados 108 exames para micológico direto e 223 para cultura fúngica. Destes, 81 laudos de micológico direto (75%) e 159 laudos de cultura fúngica (71%) atendiam aos critérios de inclusão, sendo a maioria dos resultados pertencentes a fêmeas com idade entre 1 e 8 anos, sem raça definida (SRD); além disso verificou-se que não houve diferença significativa entre as solicitações dos exames por estação do ano. A respeito da espécie de dermatófito isolado na cultura fúngica, corroborando com demais estudos, o Microsporum canis foi o mais frequente. Conclusão: Visto que as dermatofitoses são consideradas doenças com potencial zoonótico, e sua epidemiologia é conhecida por mudar ao longo do tempo, os resultados desta pesquisa mostraram que tanto o papel do médico veterinário quanto o do patologista clínico são de suma importância para o prognóstico favorável do paciente.


Objective: Given the possibility of occurrence of variance and prevalence of dermatophytosis from one geographical region to another, and its zoonotic potential, the present study had an impact on the frequency of dermatophytosis in dogs in the city of Chapecó SC. Methods: Evaluation of results obtained through direct mycological examination and canine culture issued by a private veterinary clinical anamnesis laboratory in the city of Chapecó, Santa Catarina, with data collected by the IBM SPSS 22.0 system through frequency calculation. Results: No complete year, 108 direct microbial and 223 religious culture tests were requested, at the same time, 81 direct micrological compliments (75%) and 159 fungal culture reports (71%) within inclusion lips, a large majority of the results belonged to female dog aged 1 to 8 years, with no defined race (SRD), and it was found that there was no major difference between examinations by season. Treating the resistance of sexual dermatitis in fungal culture, corroborating other Dermatophytosis is a closed disease with zoonotic potential, and its epidemiology is known to change over time. The results of the research are as important as the role of the veterinarian in clinical pathology are important for the favorable prognosis of the disease patient.


Subject(s)
Animals , Male , Female , Infant , Child, Preschool , Child , Epidemiology , Dermatomycoses , Animals, Domestic
20.
An. bras. dermatol ; 94(6): 744-746, Nov.-Dec. 2019. graf
Article in English | LILACS | ID: biblio-1054899

ABSTRACT

Abstract This report describes a case of unusual deep skin ulcers with tortuous sinus tract formation in an immunocompetent woman. She was initially diagnosed with a Staphylococcus aureus skin infection and histopathologically diagnosed with pyoderma gangrenosum. However, culture from the deep end of ribbon gauze inserted into the subcutaneous sinus tract revealed shiny, light-yellow mucoid colonies, which were identified as Cryptococcus neoformans var. grubii. She was treated with fluconazole for nine months and completely healed. Cryptococcosis is an opportunistic infection caused by variants of C. neoformans species. Cutaneous manifestations of cryptococcosis are quite divergent, rarely occurring as deep skin ulcers with sinus formation.


Subject(s)
Humans , Female , Adult , Skin Ulcer/microbiology , Skin Ulcer/pathology , Cryptococcosis/pathology , Cryptococcus neoformans/isolation & purification , Dermatomycoses/pathology , Immunocompetence , Skin Ulcer/drug therapy , Fluconazole/therapeutic use , Immunocompromised Host , Cryptococcosis/microbiology , Cryptococcosis/drug therapy , Dermatomycoses/microbiology , Dermatomycoses/drug therapy , Antifungal Agents/therapeutic use
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