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Monitoring of extracellular matrix metabolism and cross-linking in tissue, serum and urine of patients with chromoblastomycosis, a chronic skin fibrosis.

BACKGROUND: Chromoblastomycosis is a fungal disease leading to a granulomatous reaction associated with dermal fibrosis. METHODS: In an attempt to elucidate the mechanisms leading to improvement in the cutaneous lesions after treatment with terbinafine, a new antifungal drug, we analysed collagen content and cross-linking before and at the end of the treatment. The turnover of extracellular matrix was monitored for 1 year by following up serum and urinary metabolites. RESULTS: The serum levels of type III collagen and its N-terminal propeptide were correlated with the lesion size (P < 0.035) after 4 and 12 months of treatment respectively. After 4 months of treatment, urinary pyridinoline was higher (P = 0.04) in patients whose lesion size was reduced by more than 50% and serum hyaluronan was lower in patients who had lesions active for less than 5 years (P < 0.05). The treatment increased pyridinoline and pentosidine cross-links in the lesions but significantly reduced the collagen content (P = 0.05). CONCLUSION: This is the first demonstration that, in addition to its fungicidal activity, terbinafine acts in vivo as an antifibrotic drug.

Amino Acids↗

In vitro susceptibility of chromoblastomycosis and phaeohyphomycosis agents to antifungal drugs.

The in vitro susceptibility of chromoblastomycosis and phaeohyphomycosis agents to antifungal drugs was appraised using the reference macrodilution method proposed by the National Committee for Clinical Laboratory Standards (NCCLS) for yeasts modified for filamentous fungi. The antifungal drugs amphotericin B, 5-fluorocytosine, itraconazole and fluconazole were tested against one environmental and 18 clinical isolates. This work amended the macrodilution methods proposed by NCCLS and suggests that a conidial suspension free of hyphae leads to a more reliable assay and provides for better reproducibility. The macrodilution method was performed with 10(4) conidia ml-1. The MIC values ranged from 1.0 to 16.0 micrograms ml-1 for amphotericin B and 3.12 to 25.0 micrograms ml-1 for 5-fluorocytosine. A MIC range of 0.06 to 1.95 micrograms ml-1 was determined for itraconazole while 2.0 to 64.0 micrograms ml-1 was detected for fluconazole.

Antifungal Agents↗

Chromoblastomycosis in India.

BACKGROUND: Four patients with chromoblastomycosis are presented. An additional 30 infected Indian patients are reviewed. RESULTS: These 34 patients ranged in age from 12 to 80 years with a male to female ratio of 5.8 : 1. Onset before the age of 20 years was seen in 24% of cases which was comparatively high. Culture was positive in 72% of cases and sclerotic bodies were observed in 84% of cases. A relatively higher prevalence (15%) of Fonsecaea compacta was observed. Unusual cutaneous sites afflicted were the penile shaft, vulva, and ala of the nose, and unusual extracutaneous spread was seen in the pleural cavity, ileocecal region, laryngotracheal area, and tonsils. Extracutaneous involvement was seen in 24% of cases. Overlapping infection with another fungus, Geotrichum candidum, was seen in one case. CONCLUSIONS: Combination therapy with two azoles was attempted with some success for clinical cure.

Adolescent↗

Chromoblastomycosis: clinical and mycologic experience of 51 cases.

This is a study of 51 cases of chromoblastomycosis detected in a 17-year period, all of which were clinically and mycologically proven by direct examinations, cultures and biopsies. The therapeutic results of the various treatments used are reported. Most cases were males (36 of 51; 70%), the mean age was 35 years and farmers predominated (74%); the most frequent lesions were in the lower limbs (54%). Major clinical presentations were nodular (41%) and verrucous (26%). The principal aetiologic agent isolated was Fonsecaea pedrosoi (90%). Overall results of the various treatments were as follows: 31% were cured, 57% improved and 12% failed. The best results were obtained with cryosurgery for small lesions, with itraconazole for large ones, and in some cases the combination of both treatments.

Adolescent↗

Treatment of chromoblastomycosis with terbinafine: a report of four cases.

This report is about four cases of chromoblastomycosis confirmed by direct examination, histopathology and cultures. The duration of disease infection varied from 5 to 12 years. By culture, Cladosporium carrionii was isolated in two cases and Fonsecaea pedrosoi in the other two cases. Terbinafine 0.25 g twice daily for 1 month and 0.25 g once daily for maintenance therapy were given to three patients. Terbinafine 0.25 g once daily was given to one patient. After 4-8 months of therapy, all cases were cured without relapse when followed up for 6 months. The total dosage of terbinafine was 37.5-60 g. No relevant side effects showed during treatment.

Aged↗

Chromoblastomycosis caused by Rhinocladiella aquaspersa.

An unusual case is presented featuring chromoblastomycosis lesions localised in three different sites. The patient was a 52-year-old male farm worker from Barra do Corda, State of Maranhão, Brazil, who had had the disease for 2 years. Physical examination revealed extensive plaques situated on the left leg, left arm, forehead, and on the left side of the face. Direct examination of biopsies showed numerous sclerotic cells. The fungus was recovered in culture and identified on the basis of the characteristic conidiation as Rhinocladiella aquaspersa.

Arm↗

Chromoblastomycosis in children and adolescents in the endemic area of the Falcón State, Venezuela.

The present paper describes 22 cases of chromoblastomycosis (CBM) caused by Cladophialophora carrionii in children and adolescents (2-19 years old). The patients were seen between 1992 and 2004 and all resided in a CBM endemic area in the semi-arid zone of the Falcón state, Venezuela. Twelve of the 22 patients (54.55%) had close relatives who also had CBM and 19 (86.36%) were male. Lesions consisted of erythematous papules with desquamation or squamous plaques (0.12-14.19 cm in diameter), located primarily on the upper limbs (77.27% of patients). Thirteen of the patients were treated with topical 5-fluorouracil (5-FU; 1% cream), seven with topical ajoene (0.5% gel) and two had electrodesiccation and/or fulguration. Two patients who did not respond to 5-FU were treated with oral itraconazole (100 mg/day for 1 month). Complete clinical and mycological remission was achieved in 17/20 (85%) of the patients treated with 5-FC, ajoene and electrodesiccation and/or fulguration. In addition, similar results were obtained with the two patients who received itraconazole therapy. These cases emphasize the importance of early diagnosis in difficult-to-treat mycotic diseases such as CBM. By early intervention we were able to employ topical treatment with a minimum of adverse effects to achieve a high percentage of favorable therapeutic responses. The patients were thus able to avoid the evolution of the chronic, deforming and incapacitation clinical manifestations associated with CBM.

Administration, Oral↗

Adrenal response to corticotrophin and testosterone during long-term therapy with itraconazole in patients with chromoblastomycosis.

In order to establish whether long-term itraconazole therapy can affect adrenal or testicular function, the adrenal response to corticotrophin and testosterone was evaluated by radioimmunoassay in 15 patients undergoing treatment for chromoblastomycosis. Mean cortisol and testosterone concentrations were 12.4 microg/dL and 454 ng/dL respectively at baseline and 15.4 microg/dL and 480 ng/dL respectively after 12.4+/-5.2 months of treatment with itraconazole (200-400 mg daily). Results were analysed using Student's t-test. There was no clinical or laboratory evidence of steroidogenic or androgenic impairment.

Adrenal Glands↗

Pulse itraconazole 400 mg daily in the treatment of chromoblastomycosis.

Pulse itraconazole is effective in the treatment of chromoblastomycosis caused by Fonsecaea pedrosoi. Six patients, mean 62.3 years (range 45-79), mean duration 103 months (range 4 months to 30 years), were included in this study. F. pedrosoi was the only isolated organism. Four patients (66.7%) were cured by 12 months. Two patients (33.3%) failed to respond fully to treatment; however, one patient whose culture remained positive showed > 50% improvement at the end of study. Data showed that duration and severity were not predictive of treatment response. No side-effects were noted. Treatment should be continued until absence of organisms is proven by histology and tissue culture. Pulse regimen is more economical with better compliance than the conventional continuous 200-400 mg daily regimen, although optimum treatment duration depends on individual cases.

Aged↗

Chromoblastomycosis: cure by cryosurgery.

Chromoblastomycosis was successfully treated by cryosurgery in a 55-year-old white man. Depigmentation within the scar precludes an entirely successful cosmetic result.

Chromoblastomycosis↗

Successful treatment of chromoblastomycosis with itraconazole.

An unusual severe case of chromoblastomycosis due to Cladosporium carrionii unresponsive to 5-FC and some azoles is reported. With oral itraconazole at a dosage of 100 mg d(-1) for 15 months (total dose 45.5 g) the patient had a complete clinical and mycological recovery without any side-effects.

Chromoblastomycosis↗

Acute chromoblastomycosis provoked by an insect bite in an immunosuppressed patient.

This is the report of a case of acute chromoblastomycosis observed in a 59-year-old immunosuppressed patient in Barinas, Barinas State, Venezuela, provoked by an insect bite in the right upper arm, apparently cured by extirpation. Because the final diagnosis was made only by histological examination of the surgical specimen, no culture was performed.

Acute Disease↗

Susceptibility of sequential Fonsecaea pedrosoi isolates from chromoblastomycosis patients to antifungal agents.

Fourteen Fonsecaea pedrosoi isolates from six chromoblastomycosis patients were submitted to susceptibility testing. Some patients were undergoing treatment with itraconazole (ITZ) and/or cryosurgery with liquid nitrogen. The antifungal agents amphotericin B (AMB), ITZ, fluconazole (FCZ), ketoconazole (KCZ), 5-fluorocytosine (5-FC), and terbinafine (TBF) were tested. AMB and FCZ showed less activity for all isolates. The most active agents were KCZ and TBF. Sequentially isolates from four patients presented ITZ minimal inhibitory concentration (MIC) higher than the previous ones; for two of these patients, response to therapy with this agent was not observed. These results suggest development of microbiologic resistance to ITZ in four instances, two of them coinciding with lack of clinical response to this drug.

Amphotericin B↗

Chromoblastomycosis.

A 70-year-old male agriculturist from a rural area presented with a history of a painless verrucous lesion over the medial aspect of the left leg for 1 year following abrasion by a branch of a coconut tree. KOH preparation of the skin biopsy showed evidence of fungal elements. Cladophilalospora sp. was isolated in culture. The case was diagnosed as chromoblastomycosis. As there was no response to itraconazole, complete surgical resection of the lesion was done. At follow-up after 1 year there was clinical as well as mycological cure.

Aged↗

Invasive chromoblastomycosis and sinusitis due to Phialophora verrucosa in a child from northern Africa.

We report on a severe, verrucous facial mycosis and sinusitis in a 12-year-old Libyan girl. Her disease started with verrucous, hyperkeratotic plaques and subcutaneous violet nodules of unknown origin on her face and upper extremities. Despite topical antimycotic therapy she needed in-hospital treatment because of severely progressive tumorous cutaneous and nasal lesions. Microscopic examination of scale samples taken from the upper extremities and the face revealed brown, thick-walled fungal elements. Under the assumption of a chromoblastomycosis, an oral treatment with itraconazole and fluorocytosin was initiated, with significant improvement of the lesions. The aetiological agent was identified as Phialophora verrucosa.

Antifungal Agents↗

Four non-endemic New Zealand cases of chromoblastomycosis.

The majority of cases of chromoblastomycosis are reported from tropical to subtropical countries; only one previous case being reported from New Zealand. Four non-endemic cases in Pacific Island patients are described. All of the New Zealand cases were caused by Fonsecaea pedrosoi. In the present report, one patient was successfully treated by excision of the lesion followed by skin grafting. Another was treated with 200 mg ketoconazole daily for 10 weeks with no obvious improvement. No follow-up on the treatment of this case nor of the remaining two patients is available. This disease must be included in the differential diagnosis in patients who present with chronic lesions affecting the skin and subcutaneous tissues.

Adult↗

Chromoblastomycosis treated by Mohs micrographic surgery.

Mohs micrographic surgery has been used to treat a variety of skin cancers with excellent results. We present a case where the application of this technique was used effectively to treat a lesion of localized cutaneous chromoblastomycosis. One year following the surgery no recurrence has occurred.

Aged↗