Your browser doesn't support javascript.
Show: 20 | 50 | 100
Results 1 - 20 de 63
ABCS health sci ; 46: e021203, 09 fev. 2021. tab
Article in English | LILACS | ID: biblio-1147180


INTRODUCTION: The resistance of fungal species to drugs usually used in clinics is of great interest in the medical field. OBJECTIVE: To evaluate susceptibility and in vitro response of species of Trichophyton spp. to antifungal drugs of interest in clinical medicine. METHODS: 12 samples of clinical isolates from humans were used, nine of T. mentagrophytes and three of T. tonsurans. Susceptibility tests were performed according to the agar diffusion (AD) and broth microdilution (BM) methods. RESULTS: In the AD method, the species T. tonsurans presented a percentage of sensitivity of 33% in relation to amphotericin B and 66% to itraconazole, with 100% resistance to ketoconazole and fluconazole. T. mentagrophytes also showed 100% resistance to ketoconazole in this technique, with 11% sensitivity to ketoconazole, 22% to itraconazole and 22% of samples classified as sensitive dose dependent. In the MC method, the species T. tonsurans presented a sensitivity percentage of 66%, 55% and 33% in relation to ketoconazole, fluconazole and itraconazole, respectively. The T. mentagrophytes species presented sensitivity percentages of 11%, 11%, 33% and 55% for amphotericin B, itraconazole, ketoconazole and fluconazole, respectively. CONCLUSION: There was resistance in vitro of the species of T. mentagrophytes and T. tonsurans against the antifungal fluconazole and relative resistance against ketoconazole in the AD method. In BM, however, important percentages of sensitivity were observed for the two species analyzed in relation to the antifungals fluconazole and ketoconazole when compared to itraconazole and amphotericin B.

INTRODUÇÃO: A resistência de espécies fúngicas às drogas usualmente empregadas no meio clínico é motivo de grande interesse na área médica. OBJETIVO: Avaliar susceptibilidade e resposta in vitro de espécies de Trichophyton spp. a drogas antifúngicas de interesse em clínica médica. MÉTODOS: Foram utilizadas 12 amostras de isolados clínicos de humanos, sendo nove de T. mentagrophytes e três de T. tonsurans. Foram realizados testes de susceptibilidade segundo os métodos de difusão em ágar (DA) e microdiluição em caldo (MC). RESULTADOS: No método de DA, a espécie T. tonsurans apresentou percentual de sensibilidade de 33% em relação à anfotericina B e de 66% ao itraconazol, com 100% de resistência frente ao cetoconazol e ao fluconazol. A espécie T. mentagrophytes também apresentou 100% de resistência frente ao cetoconazol nesta técnica, com 11% de sensibilidade ao cetoconazol, 22% ao itraconazol e 22% das amostras classificadas como sensível dose dependente. No método de MC, a espécie T. tonsurans apresentou percentual de sensibilidade de 66%, 55% e 33% em relação ao cetoconazol, fluconazol e itraconazol, respectivamente. A espécie T. mentagrophytes apresentou percentuais de sensibilidade de 11%, 11%, 33% e 55% para anfotericina B, itraconazol, cetoconazol e fluconazol, respectivamente. CONCLUSÃO: Houve resistência in vitro das espécies do T. mentagrophytes e T. tonsurans frente ao antifúngico fluconazol e resistência relativa frente ao cetoconazol no método de DA. Na MC, no entanto, foram observados importantes percentuais de sensibilidade das duas espécies analisadas frente aos antifúngicos fluconazol e cetoconazol quando comparadas ao itraconazol e à anfotericina B.

Trichophyton/drug effects , Microbial Sensitivity Tests , Drug Resistance, Fungal , Disease Susceptibility/microbiology , Antifungal Agents/pharmacology , Tinea/microbiology , Tinea/drug therapy , Colony Count, Microbial , Fluconazole/pharmacology , Amphotericin B/pharmacology , Itraconazole/pharmacology , Ketoconazole/pharmacology
Medwave ; 19(6): e7666, 2019.
Article in English, Spanish | LILACS | ID: biblio-1008000


Resumen La tinea nigra es una infrecuente micosis superficial causada por el hongo dematiáceo Hortaea werneckii. Se presenta habitualmente en zonas costeras tropicales, siendo muy escasos los reportes en países sudamericanos con climas más templados. Habitualmente corresponde a infecciones importadas por viajeros. Se presenta el caso de una paciente adulta chilena, sin historia previa de viajes recientes, cursando con cuadro clínico y microbiológico compatible con tinea nigra palmar, tratado con itraconazol oral y sertaconazol tópico con respuesta favorable. Esta paciente corresponde al primer caso reportado en Chile de origen autóctono.

Abstract Tinea nigra is an infrequent superficial mycosis caused by the dematiaceous fungus Hortaea werneckii. It usually occurs in tropical coastal areas, with very few reports in South American countries with temperate climates, generally corresponding to infections imported by travelers. We present the case of a Chilean adult patient, with no previous history of recent trips, with clinical and microbiological background consistent with palmar tinea nigra, treated with oral itraconazole and topical sertaconazole with a favorable response. This article is the first case reported in Chile, of autochthonous origin.

Humans , Female , Adolescent , Thiophenes/administration & dosage , Tinea/diagnosis , Itraconazole/administration & dosage , Imidazoles/administration & dosage , Antifungal Agents/administration & dosage , Tinea/drug therapy , Chile , Treatment Outcome
Rev. chil. infectol ; 35(2): 204-206, abr. 2018. graf
Article in Spanish | LILACS | ID: biblio-959432


Resumen Las mascotas exóticas, como el erizo de tierra, son capaces de transmitir al ser humano diferentes infecciones, como salmonelosis, micobacterias, protozoos como Cryptosporidium parvum, y dermatofitosis. Presentamos el caso de un paciente adulto masculino, que recientemente había adquirido un erizo de tierra, que presentó en la mano una lesión de tiña incógnita y un granuloma de Majocchi. Se identificó el agente etiológico como Trichophyton erinacei, por cultivo micológico y biología molecular. El paciente se trató con terbinafina por vía oral, por seis meses, con excelente respuesta.

Exotic pets, such as the ground hedgehog, are capable of transmitting to the human being different zoonoses, such as salmonellosis, mycobacteria, protozoa such as Cryptosporidium parvum, and dermatophytosis. We present the case report of a male adult patient, who had recently acquired a ground hedgehog, who presented in his hand a ringworm lesion incognito and a Majocchi granuloma. The etiological agent was identified as Trichophyton erinacei by mycological culture and molecular biology. The patient was treated with terbinafine oral, with excellent response.

Humans , Animals , Male , Adult , Tinea/microbiology , Tinea/pathology , Trichophyton/isolation & purification , Granuloma/microbiology , Hedgehogs/microbiology , Tinea/drug therapy , Diagnosis, Differential , Eczema/diagnosis , Terbinafine , Granuloma/drug therapy , Hand/pathology , Mexico , Antifungal Agents/therapeutic use , Naphthalenes/therapeutic use
An. bras. dermatol ; 91(6): 829-831, Nov.-Dec. 2016. tab, graf
Article in English | LILACS | ID: biblio-837967


Abstract Tinea faciei is a relatively uncommon dermatophyte infection entailing atypical clinical symptoms, usually misdiagnosed and treated with corticosteroids. The authors describe a case of tinea faciei on the right eyebrow caused by Trichophyton interdigitale. The patient was an 18-year-old girl, who had an inflammatory plaque with a scaly, pustular surface on the right eyebrow and upper eyelid, which had persisted for over 1 month. She was once misdiagnosed as having eczema and was treated using corticosteroid cream. A diagnosis of tinea faciei was made based on direct microscopy and culture. The sequencing of the nuclear ribosomal ITS region and β-tubulin gene of the isolate established its T. interdigitale lineage. The patient was cured by treatment with systemic terbinafine in combination with topical application of 1% naftifine-0.25% ketaconazole cream for 2 weeks.

Humans , Female , Adolescent , Tinea/pathology , Trichophyton/isolation & purification , Eyebrows/microbiology , Eyebrows/pathology , Facial Dermatoses/microbiology , Facial Dermatoses/pathology , Tinea/drug therapy , Urease/analysis , Microscopy, Electron, Scanning , Treatment Outcome , Dermoscopy , Facial Dermatoses/drug therapy , Antifungal Agents/therapeutic use , Naphthalenes/therapeutic use
An. bras. dermatol ; 91(6): 823-825, Nov.-Dec. 2016. tab, graf
Article in English | LILACS | ID: biblio-838000


Abstract Dermatophytosis caused by Microsporum gypseum is rare, especially in infants, with few published cases. Diagnosis in this age group is frequently delayed. We review the literature and report 4 new cases of tinea of glabrous skin caused by M. gypseum mimicking eczema in infants. Considering new and previously reported cases, half of patients were exposed to sand, emphasizing the importance of this transmission vehicle in this age group. In conclusion, although rare, dermatophytosis by M. gypseum should be part of the differential diagnosis of inflammatory dermatosis in infants. A clinical suspicion and the availability of culture are keys to the diagnosis.

Humans , Male , Female , Infant , Child, Preschool , Tinea/microbiology , Tinea/pathology , Microsporum/isolation & purification , Skin/microbiology , Skin/pathology , Time Factors , Tinea/drug therapy , Treatment Outcome , Antifungal Agents/therapeutic use
An. bras. dermatol ; 91(2): 135-140, Mar.-Apr. 2016. tab, graf
Article in English | LILACS | ID: lil-781356


Abstract: BACKGROUND: Dermatophytes are filamentous keratinophilic fungi. Trichophyton rubrum is a prevalent infectious agent in tineas and other skin diseases. Drug therapy is considered to be limited in the treatment of such infections, mainly due to low accessibility of the drug to the tissue attacked and development of antifungal resistance in these microorganisms. In this context, Photodynamic Therapy is presented as an alternative. OBJECTIVE: Evaluate, in vitro, the photodynamic activity of four derivatives of Protoporphyrin IX by irradiation with LED 400 nm in T. rubrum. METHOD: Assays were subjected to irradiation by twelve cycles of ten minutes at five minute intervals. RESULT: Photodynamic action appeared as effective with total elimination of UFCs from the second irradiation cycle. CONCLUSION: Studies show that the photodynamic activity on Trichophyton rubrum relates to a suitable embodiment of the photosensitizer, which can be maximized by functionalization of peripheral groups of the porphyrinic ring.

Photochemotherapy/methods , Protoporphyrins , Trichophyton/drug effects , Photosensitizing Agents/pharmacology , Reference Values , Time Factors , Tinea/drug therapy , Colony Count, Microbial , Reproducibility of Results , Analysis of Variance , Arthrodermataceae/drug effects , Antifungal Agents/pharmacology
Clin. biomed. res ; 36(4): 230-241, 2016. tab
Article in Portuguese | LILACS | ID: biblio-831587


As dermatofitoses têm ocorrência mundial, sendo mais prevalentes em países de clima tropical e subtropical. Dados epidemiológicos indicam que essas micoses estão entre as infecções fúngicas de maior ocorrência. O quadro clínico mais comum de dermatofitose inclui despigmentação, placas anulares, prurido e perda de cabelo, com lesões tipicamente conhecidas como tineas, ocasionadas por fungos filamentosos dermatofíticos de três gêneros anamórficos: Microsporum, Trichophyton e Epidermophyton. O tratamento das dermatofitoses, em geral, está relacionado ao uso de antifúngicos tópicos e/ou sistêmicos, apresentando como problemática o surgimento de espécies multirresistentes. Esta revisão aborda as dermatofitoses e seus agentes etiológicos de forma aprofundada em aspectos epidemiológicos, apresentando a importância clínica do tema, com ênfase na causa, prevenção, tratamento e prognóstico dessa micose cutânea (AU)

Dermatophytoses have worldwide occurrence with higher prevalence in tropical and subtropical countries. Epidemiological data show that these mycoses are among the most frequent fungal infections. The most common symptoms of dermatophytoses include depigmentation, annular plaques, itching and hair loss, with lesions such as tinea, caused by dermatophytic filamentous fungi of three anamorphic genera: Microsporum, Trichophyton and Epidermophyton. Topical and/or systemic antifungalmedications are used in the treatment of dermatophytoses in general, resulting in problems such as the emergence of multidrug-resistant species. This review discusses dermatophytoses and their etiological agents with a focus on epidemiological aspects, presenting the clinical importance of the issue, with emphasis on cause, prevention, treatment and prognosis of this skin mycosis (AU)

Humans , Antifungal Agents/therapeutic use , Arthrodermataceae/classification , Tinea , Coinfection , Tinea/classification , Tinea/diagnosis , Tinea/drug therapy , Tinea/epidemiology , Tinea/etiology , Tinea/microbiology , Tinea/prevention & control
Rev. cuba. med. trop ; 67(3): 0-0, dic. 2015. ilus, tab
Article in Spanish | LILACS, CUMED | ID: lil-777073


Introducción: la tiña negra es una micosis superficial causada por el hongo Hortaea werneckii. Se considera una micosis benigna que por lo general es observada en países tropicales. Objetivo: reportar siete casos de tiña negra en niños de dos hospitales de La Habana, Cuba. Métodos: se realizó estudio micológico (examen directo y cultivo) a partir de escamas tomadas mediante raspado de las lesiones a siete niños con diagnóstico clínico presuntivo de tiña negra palmar. Se registraron las características de las lesiones, edad, sexo y factores predisponentes de los pacientes, así como la evolución del cuadro con el tratamiento antifúngico. Resultados: se confirmó la sospecha clínica de tiña negra a través del aislamiento e identificación de Hortae werneckii. Las edades de los pacientes oscilaron entre 3 y 6 años y el 57 por ciento era del sexo femenino. La hiperhidrosis se encontró en el 43 por ciento de los casos. El tratamiento específico con antifúngicos azólicos y terbinafina tópicos fue satisfactorio en 21 días como promedio. Conclusiones: todos los casos con sospecha de tiña negra fueron confirmados de manera oportuna en el laboratorio, lo que permitió descartar enfermedades malignas y aplicar tratamiento específico(AU)

Humans , Child, Preschool , Child , Tinea/diagnosis , Tinea/drug therapy , Mycological Typing Techniques , Mycoses/diagnosis
Indian J Dermatol Venereol Leprol ; 2015 Jul-Aug; 81(4): 363-369
Article in English | IMSEAR | ID: sea-160055


Introduction: Dermatophytes are the most frequently implicated agents in toenail onychomycosis and oral terbinafi ne has shown the best cure rates in this condition. The pharmacokinetics of terbinafi ne favors its effi cacy in pulse dosing. Objectives: To compare the effi cacy of terbinafi ne in continuous and pulse dosing schedules in the treatment of toenail dermatophytosis. Methods: Seventy-six patients of potassium hydroxide (KOH) and culture positive dermatophyte toenail onychomycosis were randomly allocated to two treatment groups receiving either continuous terbinafi ne 250 mg daily for 12 weeks or 3 pulses of terbinafi ne (each of 500mg daily for a week) repeated every 4 weeks. Patients were followed up at 4, 8 and12 weeks during treatment and post-treatment at 24 weeks. At each visit, a KOH mount and culture were performed. In each patient, improvement in a target nail was assessed using a clinical score; total scores for all nails and global assessments by physician and patient were also recorded. Mycological, clinical and complete cure rates, clinical effectivity and treatment failure rates were then compared. Results: The declines in target nail and total scores from baseline were signifi cant at each follow-up visit in both the treatment groups. However, the inter-group difference was statistically insignifi cant. The same was true for global assessment indices, clinical effectivity as well as clinical, mycological, and complete cure rates. Limitations: The short follow-up in our study may have led to lower cure rates being recorded. Conclusion: Terbinafi ne in pulse dosing is as effective as continuous dosing in the treatment of dermatophyte toenail onychomycosis.

Arthrodermataceae/drug effects , Double-Blind Method , Humans , Naphthalenes/administration & dosage , Nails/microbiology , Onychomycosis/drug therapy , Onychomycosis/epidemiology , Pulse Therapy, Drug/methods , Tinea/drug therapy , Tinea/epidemiology , Toes/microbiology
An. bras. dermatol ; 90(2): 251-253, Mar-Apr/2015. graf
Article in English | LILACS | ID: lil-741070


We report the case of a three-year-old child who, following long term treatment with topical corticosteroids and their associations for a case of ringworm on the face developed a form of folliculitis known as Majocchi's Granuloma. Treatment with oral Griseofulvin was successful.

Humans , Female , Child, Preschool , Tinea/pathology , Facial Dermatoses/pathology , Granuloma/pathology , Skin/pathology , Tinea/drug therapy , Biopsy , Treatment Outcome , Facial Dermatoses/drug therapy , Folliculitis/pathology , Granuloma/drug therapy , Griseofulvin/therapeutic use , Immunocompetence , Antifungal Agents/therapeutic use
Article in English | IMSEAR | ID: sea-157655


Lobate GM Neo, 15 mg is a triple drug combination of a steroid clobetasol with anti-fungal miconazole and antibacterial neomycin in treatment of Eczematous disorders associated with underlying Tinea or Yeast Infections. Aims and Objectives: The study was designed to evaluate the efficacy, safety and tolerability of a combinations of clobetasol, neomycin and miconazole (Group A) versus betamethasone, clotrimazole, neomycin (Group B) versus betamethasone, gentamicin, miconazole (Group C) in subjects with any type of eczematous disorder associated with underlying tinea or yeast infection. Materials and Methods: This was an open label, parallel group, randomized comparative study. The primary endpoint analyzed was improvement in clinical score from baseline at the end of day 7 and other primary endpoint like hyperpigmentation were analyzed by the visual analogue scale of 1 to 10 at the end of day 7. Results: Thirty-six subjects were randomized to three groups. The clinical score showed a significant reduction from baseline at the end of day 7 in all the groups, i.e. 82.9%, 81.3% and 85.6% in Group A, B and C respectively. However, the difference between the groups were not statistically significant. Mean hyper pigmentation score showed significant decrease of 82.9% in Group A, 81.6% in Group B and 92.2% in Group C from baseline at the end of day 7. Conclusion: The triple combination of antifungal, antibacterial and potent steroid was found to be efficacious, safe and tolerable in reducing signs and symptoms (scaling, inflammation, burning and itching) of eczematous disorder associated with underlying tinea/yeast infection.

Adult , Antifungal Agents/administration & dosage , Betamethasone/administration & dosage , Clobetasol/administration & dosage , Clotrimazole/administration & dosage , Drug Combinations , Gentamicins/administration & dosage , Humans , Male , Miconazole/administration & dosage , Mycoses/drug therapy , Neomycin/administration & dosage , Tinea/drug therapy
An. bras. dermatol ; 89(2): 259-264, Mar-Apr/2014. tab, graf
Article in English | LILACS | ID: lil-706989


BACKGROUND: The cutaneous mycoses, mainly caused by dermatophyte fungi, are among the most common fungal infections worldwide. It is estimated that 10% to 15% of the population will be infected by a dermatophyte at some point in their lives, thus making this a group of diseases with great public health importance. OBJECTIVE: To analyze the clinical, epidemiological, and therapeutic profile of dermatophytosis in patients enrolled at the Dermatology service of Universidade do Estado do Pará, Brazil, from July 2010 to September 2012. METHOD: A total of 145 medical records of patients diagnosed with dermatophytosis were surveyed. Data were collected and subsequently recorded according to a protocol developed by the researchers. This protocol consisted of information regarding epidemiological and clinical aspects of the disease and the therapy employed. RESULTS: The main clinical form of dermatophyte infection was onychomycosis, followed by tinea corporis, tinea pedis, and tinea capitis. Furthermore, the female population and the age group of 51 to 60 years were the most affected. Regarding therapy, there was a preference for treatments that combine topical and systemic drugs, and the most widely used drugs were fluconazole (systemic) and ciclopirox olamine (topical). CONCLUSION: This study showed the importance of recurrent analysis of the epidemiological profile of dermatophytosis to enable correct therapeutic and preventive management of these conditions, which have significant clinical consequences, with chronic, difficult-totreat lesions that can decrease patient quality of life and cause disfigurement. .

Adolescent , Adult , Aged , Aged, 80 and over , Child , Child, Preschool , Female , Humans , Infant , Male , Middle Aged , Young Adult , Antifungal Agents/therapeutic use , Tinea/drug therapy , Tinea/epidemiology , Age Distribution , Brazil/epidemiology , Cross-Sectional Studies , Drug Therapy, Combination , Retrospective Studies , Sex Distribution , Socioeconomic Factors , Skin/pathology , Tinea/pathology
An. bras. dermatol ; 89(1): 165-166, Jan-Feb/2014. graf
Article in English | LILACS | ID: lil-703542


We report a case of Tinea nigra in an adolescent living in Itapema, Santa Catarina, Brazil, who presented a hyperchromic macule on the palm of the left hand, close to another erythematous macule caused by a rabbit bite. The patient received guidance on accidents and animal bites and evolved well treated with topical butenafine for the dermatomycosis. The authors also highlight the efficacy of the dermoscopic exam in diagnosing Tinea nigra with animal bite lesions and other traumas.

Adolescent , Animals , Female , Humans , Rabbits , Bites and Stings/complications , Dermoscopy/methods , Tinea/diagnosis , Antifungal Agents/therapeutic use , Benzylamines/therapeutic use , Naphthalenes/therapeutic use , Skin/pathology , Treatment Outcome , Tinea/drug therapy , Tinea/etiology
Braz. j. microbiol ; 44(4): 1035-1041, Oct.-Dec. 2013. tab
Article in English | LILACS | ID: lil-705291


Millions of people and animals suffer from superficial infections caused by a group of highly specialized filamentous fungi, the dermatophytes, which only infect keratinized structures. With the appearance of AIDS, the incidence of dermatophytosis has increased. Current drug therapy used for these infections is often toxic, long-term, and expensive and has limited effectiveness; therefore, the discovery of new anti dermatophytic compounds is a necessity. Natural products have been the most productive source for new drug development. This paper provides a brief review of the current literature regarding the presence of dermatophytes in immunocompromised patients, drug resistance to conventional treatments and new anti dermatophytic treatments.

Humans , Antifungal Agents/isolation & purification , Antifungal Agents/pharmacology , Biological Products/isolation & purification , Biological Products/pharmacology , Drug Discovery/trends , Tinea/drug therapy , Tinea/epidemiology , Antifungal Agents/therapeutic use , Arthrodermataceae/drug effects , Biological Products/therapeutic use
Rev. Assoc. Med. Bras. (1992) ; 58(3): 308-318, May-June 2012. ilus, tab
Article in Portuguese | LILACS | ID: lil-639554


OBJETIVO: Avaliar e comparar a eficácia dos antifúngicos tópicos empregados no tratamento de cada dermatomicose. MÉTODOS: Foi desenvolvida uma revisão sistemática de ensaios clínicos randomizados, publicados em português, espanhol ou inglês até julho de 2010, que comparassem o uso de antifúngicos azólicos e alilamínicos entre si ou com placebo, no tratamento de candidíase cutânea, e das tineas versicolor, pedis, cruris e corporis. Os desfechos de eficácia avaliados foram cura micológica ao final do tratamento e cura sustentada. RESULTADOS: Dos 4.424 estudos inicialmente identificados, 49 alcançaram os critérios de seleção, sendo incluídos nas metanálises. Os dados agrupados de eficácia demonstraram superioridade dos antifúngicos frente a placebo, independente da dermatomicose avaliada, com valores de odds ratio (OR) variando de 2,05 (IC 95% 1,18-3,54) a 67,53 (IC 95% 11,43-398,86). Alilaminas foram superiores aos azólicos apenas para o desfecho cura sustentada (OR 0,52 [IC 95% 0,31-0,89]). CONCLUSÃO: Há evidência consistente da superioridade dos antifúngicos com relação ao uso de placebo, não sendo mais justificável a realização de estudos controlados por placebo. Alilaminas mantêm a cura micológica por períodos mais extensos que fármacos azólicos. Dada a significativa diferença de custo entre as classes, recomenda-se a realização de análises farmacoeconômicas.

OBJECTIVE: To evaluate and compare the efficacy of topical antifungal drugs applied to the treatment of each dermatomycosis. METHODS: A systematic review of randomized clinical trials, published in Portuguese, Spanish and English until July 2010, which compared the use of azole and allylamine antifungal drugs among themselves and with placebo in the treatment of cutaneous candidiasis and T. versicolor, T. pedis, T. cruris and T. corporis was performed. The efficacy outcomes evaluated were mycological cure at the end of treatment and sustained cure. RESULTS: Of the 4,424 studies initially identified, 49 met the selection criteria and were included in the meta-analyses. The grouped efficacy data evidenced the superiority of antifungal drugs compared to placebo, regardless of the dermatomycosis under evaluation, with odds ratio values ranging from 2.05 (95% CI 1.18-3.54) to 67.53 (95% CI 11.43-398.86). Allylamines were better than azoles only for the outcome sustained cure (OR 0.52 [95% CI 0.31-0.89]). CONCLUSION: There is consistent evidence of the superiority of antifungal drugs over the use of placebo, and placebo-controlled studies are no longer justifiable. Allylamines maintain the mycological cure for longer periods compared to azole drugs. Given the significant cost difference among the classes, pharmacoeconomic analyses should be performed.

Humans , Antifungal Agents/administration & dosage , Candidiasis, Cutaneous/drug therapy , Tinea/drug therapy , Administration, Cutaneous , Randomized Controlled Trials as Topic , Treatment Outcome
Rev. chil. infectol ; 28(6): 512-519, dic. 2011. ilus
Article in Spanish | LILACS | ID: lil-612149


This work studied safety and antifungal activity of ozonized sunflower oil (AMO3) against dermatophytes. AMO3 was prepared through a new original process that modifies the oil before ozonation by alcoholic catalytic esterification. Susceptibility was studied in 41 dermatophytes by agar diffusion and broth microdilution tests. The experimental model to assess the topical safety of the oil included 60 CF1 mice divided in three groups that were treated with vaseline (control), 1 percent AMO3 and 50 percent AMO3 (overdose), respectively. Then, experimental dermatophytosis was induced in CF1 mice. Seventy-five individuals were selected and divided in 5 groups that were treated once a day with placebo, cream with 1 percent, 2 percent and 3 percent AMO3 plus an untreated control group. This new natural product showed antifungal activity against all strains studied. The MIC ranged between was 0,125 and 1 percent, while minimum fungicidal concentration (MFC) was 2 percent. The application of vaseline and AMO3 1 percent and 50 percent did not produce clinical or histopathological lesions. The mice with dermatophytosis that were treated with 1 percent, 2 percent and 3 percent AMO3 showed 100 percent clinical cure and 94 percent average mycological cure, exceeding placebo and control groups (p < 0,05). This product exhibits high antifungal activity and could be a safe alternative for ringworm topical treatment.

Se evaluó la seguridad y actividad antifúngica del aceite de maravilla ozonizado (AMO3) frente a dermatofitos. AMO3 se generó a través de un proceso original que implica modificación del aceite previa ozonización por esterificación catalítica con alcohol. La sensibilidad fue estudiada en 41 dermatofitos por difusión en agar y microdilución en caldo. El modelo experimental para evaluar tópicamente la seguridad del aceite, incluyó 60 ratones CF1, formando tres grupos a los cuales se les aplicó respectivamente vaselina (control), AMO3 1 por ciento y AMO3 50 por ciento (sobredosis). Luego, se indujo derma-tofitosis experimental en ratones CF1, seleccionando 75 individuos divididos en cinco grupos tratados una vez al día con placebo, crema con AMO3 al 1 por ciento, 2 por ciento y 3 por ciento, más un grupo control sin tratamiento. Este nuevo producto natural presentó actividad antifúngica frente a todas las cepas estudiadas. La CIM fluctuó entre 0,125 y 1 por ciento mientras la concentración fungicida mínima (CFM) fue de 2 por ciento. La aplicación de AMO3 no generó lesiones clínicas ni histopatológicas. Los ratones con dermatofitosis tratados con AMO3 presentaron 100 por ciento de cura clínica y 94 por ciento de promedio en cura micológica, siendo superior al grupo control y placebo (P < 0,05). Este producto muestra elevada actividad antimicótica y podría ser una alternativa segura para tratamiento tópico de dermatofitosis.

Animals , Mice , Antifungal Agents/pharmacology , Arthrodermataceae/drug effects , Plant Oils/pharmacology , Tinea/drug therapy , Antifungal Agents/therapeutic use , Microbial Sensitivity Tests/methods , Plant Oils/therapeutic use , Tinea/microbiology , Tinea/pathology
An. bras. dermatol ; 86(5): 1003-1006, set.-out. 2011. ilus
Article in Portuguese | LILACS | ID: lil-607472


Trichophyton tonsurans é um fungo dermatófito antropofílico de alta transmissibilidade que invade tecidos queratinizados. Relatamos um caso de microepidemia familiar causada por esse dermatófito no qual, apesar das ótimas condições de higiene, o fungo se manteve viável por vários anos, disseminando-se para todos os membros da família. A hipótese de que estivesse sendo mantido na residência da família foi confirmada após análise de amostras do domicílio, em que foram isoladas e identificadas culturas puras do fungo. Após o diagnóstico, a residência foi desinfetada e todos os membros da família receberam tratamento oral concomitantemente.

Trichophyton tonsurans is a highly transmissible anthropophilic dermatophyte fungus, which invades keratinized tissues. This study reports a case of family microepidemic caused by this dermato phyte. Despite their excellent hygiene conditions, it remained active for several years, spreading to all family members. The hypothesis that the fungus was being kept alive in the family home was confirmed after samples collected from it were analyzed. Pure cultures of the fungus were isolated and identified. After diagnosis, the house was disinfected with concomitant oral treatment for all family members.

Humans , Infant , Male , Tinea/diagnosis , Trichophyton/isolation & purification , Disinfection/methods , Family Health , Housing , Time Factors , Tinea/drug therapy , Trichophyton/classification