RESUMEN
We present an unusual equine endometritis case associated with Cladophialophora bantiana in a 15-year-old mare. The mare displayed infertility and uterine fluid accumulation with numerous black, hairy granules. Microscopically, the fluid revealed numerous septate, dark fungal hyphae and conidia in chains. Culture yielded C. bantiana (CBS 138271); the species was confirmed by internal transcribed spacer (ITS) sequencing. Treatment was unsuccessful. C. bantiana causes cerebral phaeohyphomycosis in humans, while animal cases are rare. Animal cases are reviewed.
Asunto(s)
Ascomicetos/aislamiento & purificación , Endometritis/patología , Endometritis/veterinaria , Enfermedades de los Caballos/microbiología , Enfermedades de los Caballos/patología , Micosis/patología , Micosis/veterinaria , Animales , Ascomicetos/clasificación , Ascomicetos/genética , Análisis por Conglomerados , ADN de Hongos/química , ADN de Hongos/genética , ADN Espaciador Ribosómico/química , ADN Espaciador Ribosómico/genética , Endometritis/microbiología , Exudados y Transudados/microbiología , Femenino , Caballos , Técnicas Microbiológicas , Microscopía , Datos de Secuencia Molecular , Micosis/microbiología , Filogenia , Embarazo , Análisis de Secuencia de ADNRESUMEN
The rapid identification of microbes responsible for bloodstream infections (BSIs) allows more focused and effective therapies and outcomes. DNA sequence-based methods offer an opportunity for faster, accurate diagnosis and for effective therapy. As our objective of the study, the ability of the Prove-it Sepsis platform, already proven as a rapid PCR- and microarray-based assay for the majority of sepsis-causing bacteria, was extended to also rapidly identify clinically relevant yeasts in blood culture. The performance characteristics of this extended platform are described. We found that the extended diagnostic Prove-it Sepsis platform was found to be highly accurate when analyzing primary isolates, spiked blood cultures, nucleic acid extracts from a retrospective blood culture data set, and primary blood cultures. Comparison of the blood culture results from the Prove-it Sepsis platform with those from conventional culture-based methods or by gene sequencing demonstrated a sensitivity of 99% and a specificity of 98% for fungal targets (based on analysis of a total of 388 specimens). Total assay time was 3 h from DNA extraction to BSI diagnosis. These results extend the performance characteristics of the Prove-it platform for bacteria to the easy, rapid, and accurate detection and species identification of yeasts in positive blood cultures. Incorporation of this extended and rapid diagnostic platform into the tools for clinical patient management would allow possibly faster identification and more focused therapies for BSIs.
Asunto(s)
Candida/clasificación , Candida/aislamiento & purificación , Candidemia/microbiología , Análisis por Micromatrices/métodos , Técnicas de Diagnóstico Molecular/métodos , Micología/métodos , Reacción en Cadena de la Polimerasa/métodos , Candida/genética , Humanos , Sensibilidad y Especificidad , Factores de TiempoRESUMEN
Zygomycoses are opportunistic infections caused by the Mucorales fungi. They are typically seen in immunosuppressed patients. The incidence of zygomycosis cases seems to be increasing. We report on zygomycosis in a pediatric, female stem-cell-transplant recipient. This case report underlines the difficulty of taking care of patients with zygomycosis. In fungal infections of immunosuppressive patients on broad-coverage antibiotics, foci of skin necrosis are unique and typical for zygomycoses, and may be helpful in this challenging diagnosis.
Asunto(s)
Inmunosupresores/efectos adversos , Rhizomucor/aislamiento & purificación , Trasplante de Células Madre/efectos adversos , Trasplante , Cigomicosis/diagnóstico , Adolescente , Femenino , Humanos , Huésped Inmunocomprometido , Inmunosupresores/administración & dosificación , Necrosis/patología , Piel/patología , Cigomicosis/microbiologíaRESUMEN
We studied the epidemiology of nosocomial candidaemia by assessing the incidence and outcome of illness and causative species in a large Finnish tertiary care centre during 1987-2004. A total of 364 episodes were observed; annual incidence varied between 0.26 per 10,000 patient-d in 2000 and 0.59 in 1989. The most common species were C. albicans (65%), C. parapsilosis (13%), and C. glabrata (9%). The proportion of C. albicans decreased from 71% during 1987-1992 to 58% during 1999-2004, and C. glabrata increased from 3% to 14%, respectively. The proportion of intensive care patients increased from 27% during 1987-1992 to 44% by 1999-2004, associated with neonates and surgical patients. The 1-month case fatality ranged from 30% to 33%. Nosocomial candidaemias did not increase, but the distribution of Candida spp. changed. Mortality remained high. The observed changes may reflect differences in prevention strategies that need to be explored for further improvements in prevention.
Asunto(s)
Candidiasis/epidemiología , Infección Hospitalaria/epidemiología , Fungemia/epidemiología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Candida/clasificación , Candida/aislamiento & purificación , Candidiasis/microbiología , Candidiasis/mortalidad , Niño , Preescolar , Enfermedad Crítica , Infección Hospitalaria/mortalidad , Femenino , Finlandia/epidemiología , Fungemia/microbiología , Fungemia/mortalidad , Hospitales , Humanos , Incidencia , Lactante , Masculino , Persona de Mediana Edad , Mortalidad , Resultado del Tratamiento , Adulto JovenRESUMEN
BACKGROUND: Autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED, APS1) is an autosomal recessive disease exceptionally common in Finland. Most patients have chronic oral candidiasis from early childhood and this infection has been shown to be carcinogenic. Hence, patients receive repeated treatment and prophylactic courses of antifungals throughout life. In Finland, 92 patients have been diagnosed with APECED and 66 of them are currently alive. Our aim was to study the effect of long-term azole treatment on the candidal colonization of APECED patients and the influence on antifungal susceptibilities. METHODS: We evaluated the culture reports from 1994 to 2004 of 56 APECED patients followed in Helsinki University Central Hospital. Candida albicans strains of all 11 patients initially reported resistant (n = 27) and 12 patients reported susceptible (n = 16) to fluconazole were re-analysed for their susceptibility to fluconazole. Antifungal usage was analysed up to 30 years back. RESULTS: A total of 162 fungal cultures had been performed. Of these, 75% had been reported positive for Candida and 63% for C. albicans. Eleven patients (31.4%) had been reported to harbour at least once a C. albicans strain resistant to fluconazole. Re-analysis of the stored C. albicans strains originally reported to be resistant to fluconazole revealed a mean MIC of 19.5 mg/L. CONCLUSIONS: Multiple courses (>6) of fluconazole annually and low dose prophylaxis are major risk factors for persistent colonization with C. albicans with decreased susceptibility in APECED patients.
Asunto(s)
Antifúngicos/farmacología , Azoles/farmacología , Candida albicans/efectos de los fármacos , Farmacorresistencia Fúngica , Poliendocrinopatías Autoinmunes/complicaciones , Adolescente , Adulto , Antifúngicos/uso terapéutico , Candida albicans/aislamiento & purificación , Niño , Finlandia , Humanos , Pruebas de Sensibilidad Microbiana , Persona de Mediana Edad , Poliendocrinopatías Autoinmunes/microbiologíaRESUMEN
A 5-year retrospective multicenter study was performed for microascaceous moulds (Microascaceae, Ascomycetes) in Finnish clinical specimens. The files from 1993-1997 of six clinical mycology laboratories in Finland were searched for reports of these fungi, mainly Scopulariopsis and Scedosporium anamorphs in keratinous specimens. From the 521 primary findings, 165 cases were selected for further study based on direct microscopy, colony numbers and accompanying fungi. The clinical records of 148 cases (141 Scopulariopsis, 7 Scedosporium) were studied. Of the nail infections from which Scopulariopsis was recovered, 39 cases were further separated which showed clinical or laboratory-based evidence of dermatophytosis. In the remaining 90 'non-dermatophyte' nail cases, Scopulariopsis spp. were the only documented fungal agents (c. 6 cases/million/year). The patients were mainly elderly, 66% of whom had problems involving their big toe nails. For 74% of them, the nail problem was mentioned as their reason for visiting the physician. However, only 18% had documented benefit from treatment. The Scopulariopsis nail infections seem to be treatment-resistant and the pathogenesis and etiological role of Scopulariopsis remain poorly understood.
Asunto(s)
Ascomicetos/aislamiento & purificación , Dermatomicosis/microbiología , Enfermedades de la Uña/microbiología , Uñas/microbiología , Piel/microbiología , Adolescente , Adulto , Factores de Edad , Anciano , Anciano de 80 o más Años , Niño , Dermatomicosis/tratamiento farmacológico , Dermatomicosis/epidemiología , Dermatomicosis/patología , Femenino , Finlandia/epidemiología , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Enfermedades de la Uña/tratamiento farmacológico , Enfermedades de la Uña/epidemiología , Uñas/patología , Estudios Retrospectivos , Piel/patología , Resultado del TratamientoRESUMEN
Candida parapsilosis is an increasing cause of bloodstream infections (BSIs) in neonatal intensive care units (NICUs). It has been a persistent problem in the NICU of Hospital for Children and Adolescents, Helsinki University Central Hospital, Helsinki, Finland, since 1987. Fluconazole prophylaxis has been used to control the problem. The number of new infections has, however, increased markedly since September 2000. We assessed fluconazole consumption and occurrence of all Candida species in the NICU from 1991 to 2002. C. parapsilosis bloodstream isolates obtained in the NICU from 1990 to 2002 (n = 26) were genotyped and their fluconazole susceptibility was defined. A low rate of C. parapsilosis BSIs was correlated with high rates of consumption of fluconazole. No emergence of Candida species with primary resistance to fluconazole was detected. However, genotyping with a complex DNA fingerprinting probe revealed that a single strain of C. parapsilosis with decreasing susceptibility to fluconazole was responsible for cross-infections that caused BSIs in the NICU over a 12-year period. The emergence of fluconazole resistance in that strain was observed after more than 10 years of fluconazole prophylaxis.
Asunto(s)
Antifúngicos/farmacología , Candida/efectos de los fármacos , Farmacorresistencia Fúngica , Fluconazol/farmacología , Enfermedades del Prematuro/microbiología , Unidades de Cuidado Intensivo Neonatal , Antifúngicos/uso terapéutico , Candidiasis/microbiología , Candidiasis/prevención & control , Quimioprevención , Femenino , Fluconazol/uso terapéutico , Fungemia/microbiología , Fungemia/prevención & control , Edad Gestacional , Humanos , Recién Nacido , Recien Nacido Prematuro , Enfermedades del Prematuro/prevención & control , Masculino , Pruebas de Sensibilidad MicrobianaRESUMEN
This report describes the first isolation of Mycobacterium shimoidei in Finland from a sputum specimen obtained from an elderly female patient. M. shimoidei, a potential lung pathogen, is difficult to identify by routine methods and only a few cases have been reported. The present study demonstrated that M. shimoidei has a characteristic pattern for fatty acids and alcohols in gas liquid chromatography. This chromatogram and the pattern of mycolic acids on thin-layer chromatography allow it to be distinguished routinely. The unique sequence of the 16S rRNA gene and the 16S-23S rDNA spacer region allows identification by molecular methods.