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Biomedical subjects

A R Costa

Publications and source records attributed to A R Costa.

15 recordsLinked to original sources
PubMed2003

Trichophyton raubitschekii: a new agent of dermatophytosis in Brazil?

A microbiological and ultrastructural study of Trichophyton raubitschekii recovered from a patient with tinea faciei is presented. This is the second case of isolation of this fungus in Sao Paulo and the sixth case in Brazil. Upon culture, the morphological pattern and the physiological tests performed confirmed the identification of T. raubitschekii. The ultrastructural study of T. raubitschekii showed the presence of a membrane-like structure located in the outer portion of the hyphal walls. This structure was bi-stratified and very like the one observed in T. rubrum. Is T. raubitschekii a new fungus emerging in Brazil or is it a T. rubrum variant?

Brazil↗
PubMed2000

Chronic paroxysmal hemicrania-tic syndrome.

The association of chronic paroxysmal hemicrania and ticlike pain-chronic paroxysmal hemicrania-tic (CPH-tic)-is a recently described syndrome. The authors found only two previously reported cases. They report three new cases of this rare syndrome with both chronic paroxysmal hemicrania and ticlike pain concurrently and ipsilaterally. The trigeminal-autonomic cephalalgias (TAC) are considered as differential diagnoses. CPH-tic syndrome could be a different clinical entity.

Aged↗
PubMed1992

[The use of a rate-responsive pacemaker after heart transplantation].

PURPOSE: The indications and the results of pacemaker implant following orthotopic cardiac transplantation. METHODS: Four patients implanted a cardiac pacemaker (PM) in the early post-operative period (PO) of orthotopic cardiac transplantation (from 10th to 16th PO day). The patients were 33 to 55 year-old and the indications to PM were supraventricular arrhythmia (atrial fibrillation or flutter) associated with atrioventricular block in three, and complete atrioventricular block in one patient. Previous to PM implant, patients were submitted to endomyocardial biopsy, which was normal in two patients, evidenced mild rejection in one and moderate rejection in the remaining. A ventricular rate responsive pacemaker was implanted in all patients, with sensors responsive to muscular activity in one patient, and to minute ventilation in three. RESULTS: One patient died in the 20th PO due to acute allograft rejection not controlled by immunosuppressive drugs. Three other patients had satisfactory evolution and the pacemakers were programmed during exercise testing, previous to hospital discharge. Recent evaluation revealed that these patients are in good clinical condition at the 6th, 14th and 24th PO months. Adequate pacemaker function was insured by exercise testing and ambulatory electrocardiographic recording. CONCLUSION: A ventricular rate responsive pacemaker represented a satisfactory mode of pacing, in patients with severe bradycardia, following heart transplantation.

Adult↗
PubMed1991

Rhinofacial zygomycosis caused by Conidiobolus coronatus. A case report.

A case of rhinofacial zygomycosis with of years duration, caused by Conidiobolus coronatus is described. The patient, a 72-years-old woman, presented with a bilateral distortion of the subcutaneous tissue and disfigurement of the face. Treatment with ketoconazole and potassium iodide did not prevent several relapses. At present she is still under treatment with fluconazole with clinical healing. Histopathological and mycological examination confirmed the dermatological diagnosis. An increasing number of cases of zygomycosis caused by fungi of the order Entomophthorales have also been reported in the Northern and Northeastern States of Brazil.

Aged↗
PubMed1990

Subcutaneous mucormycosis caused by Mucor hiemalis Wehmer f. luteus (Linnemann) Schipper 1973.

The authors report a case of subcutaneous mucormycosis in a diabetic patient with verrucous lesions in the fourth finger of the right hand. Initially diagnosed as a fixed cutaneous sporotrichosis case, success was obtained with the use of potassium iodide with healing of the lesion in a period of nearly 5 months. At present the patient remains under clinical observation with no treatment or relapse.

Aged↗
PubMed1988

Cutaneous and ungual phaeohyphomycosis caused by species of Chaetomium Kunze (1817) ex Fresenius, 1829.

Two cases of cutaneous and ungual phaeohyphomycosis caused by species of Chaetomium are reported. The patients showed no clinical signs of immunodeficiency. In Case 1 there was a small, ulcerated, crusted lesion on the right forearm. Direct microscopical examination of material from this lesion showed light-brown hyphae with thick-walled cells. The fungus isolated was identified as Chaetomium globosum. Case 2 had lesions of the fingernails. Direct microscopy showed dematiaceous septate hyphae in the nail. The isolate from the nails was identified as Chaetomium perpulchrum. Identification of the fungi was based on the classification of Ames (1963) as adapted by Cooke (1986). Such infections due to Chaetomium species are rare.

Chaetomium↗
PubMed1983

[Sternal cleft. Surgical treatment in the newborn].

The lack of total sternal fusion without other anomalies of the chest wall is extremely rare. We present the case of one 24 h. old female, clinically asymptomatic with complete sternal cleft without other symptoms. She was operated on within the first week of life, a sternal primary suture with costal condrotomy and alternate costal suture were performed. Good thoracic stability was obtained. We agree with other authors about the need for surgical correction during the neonatal period.

Female↗
PubMedDate not supplied

Subcutaneous phaeohyphomycosis caused by Bipolaris hawaiiensis. A case report.

A case of phaeohyphomycosis caused by Bipolaris hawaiiensis is reported. The patient, an immunocompetent host, presented a verrucous lesion on the first finger of the left foot. Dematiaceous septate hyphae and yeast-like elements were seen in direct and histological examination. The isolated strain was identified on the basis of micro and macromorphological aspects. Treated with electrocoagulation, the lesions healed and presented no relapse after two years follow-up.

Dermatomycoses↗
PubMedDate not supplied

Isolation of Mycobacterium gordonae from poultry slaughterhouse water in São Paulo State, Brazil.

Water samples (24 untreated water, 12 treated water and 24 served water) used in different stages of the slaughter process were examined to identify a possible source of pathogenic mycobacteria. The isolates were identified based on microscopy, morphological and biochemical features, mycolic acid analysis and molecular method--PCR-restriction-enzyme analysis. Eighteen mycobacterial strains were isolated from 60 water samples: 11 from untreated water, 5 from treated water and 2 from served water. All mycobacteria isolated were identified as Mycobacterium gordonae and showed the following PRA genotypes: III (27.8%), IV (38.9%) and V (33.3%).

Abattoirs↗