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S Pinheiro

Publications and source records attributed to S Pinheiro.

6 recordsLinked to original sources

How important is the 'quality' of the cytotoxic T lymphocyte (CTL) response in protection against HIV infection?

Cytotoxic T lymphocyte (CTL) responses have been associated with protection from HIV-1 infection in people with a high degree of exposure to HIV and who show no serological evidence of HIV infection (HEPS, highly exposed persistently seronegative). However, it remains unclear how protective CTL responses could apparently develop in a minority of people, whilst the great majority of HIV-infected people make strong CTL responses yet progress to AIDS and death. In this paper we review the data which supports the hypothesis that the quality of the T-cell response, rather than its magnitude, may be an important factor that merits further investigation.

CD4-Positive T-Lymphocytes↗

Evaluation of a commercial ligase chain reaction assay for the diagnosis of pulmonary and extra-pulmonary tuberculosis.

SETTING: Egas Moniz Hospital, Lisbon, Portugal. OBJECTIVE: To evaluate the Ligase Chain Reaction (LCx) Mycobacterium tuberculosis Assay for the direct detection of M. tuberculosis complex in respiratory specimens after smear observation, and its suitability for non-respiratory clinical specimens. DESIGN: Analysis of 156 specimens collected from 123 patients with pulmonary tuberculosis and/or extrapulmonary involvement. RESULTS: Among 93 pulmonary secretions and 63 extra-pulmonary samples and after resolution of discrepancies based on clinical and laboratory findings, two pulmonary samples from a patient with a diagnosis of sarcoidosis, four samples of cerebrospinal and one of seminal fluid were considered as false positives. Two tissue biopsy samples, one pericardial effusion and one pulmonary secretion from patients strongly suspected of having tuberculosis were considered as false negatives for the assay, without inhibition of amplification. All specimens yielding M. avium on culture were LCx negative. CONCLUSION: The LCx Mycobacterium tuberculosis Assay was found to be useful for the rapid identification of M. tuberculosis complex in all types of specimens. It revealed a high specificity both in pulmonary and extrapulmonary products, and a sensitivity of 97% for the pulmonary secretions and of 75% for the extra-pulmonary specimens, independently of the bacilloscopy results.

Biopsy↗

[Meningomyeloradiculitis caused by Schistosoma mansoni. Research protocol and report of 21 cases].

Twenty one cases of schistosomal meningomyeloradiculopathy due to Schistosoma mansoni are reported. This result was attained after a 4- year research period based on a "Clinical and Laboratory Investigation Protocol" applied on 212 patients in Itabuna, a city of Southeast region of Bahia state in the Northeast of Brazil. This region is a non endemic one for schistosomiasis. The Protocol consisted in leading to investigation every patient that presented a clinical triad characterized by: lumbar pain, paresthesias in the inferior limbs, miction difficulties. Diagnostic criteria were based on clinical neurologic signs, presence of Schistosoma mansoni eggs on feces or rectum biopsy, positive immunofluorescence reaction for schistosomiasis in the cerebrospinal fluid (CSF), the inflammatory CSF characteristics, and an exhaustive research for differential diagnosis. The diagnosis has been essentially based on clinical and laboratory data, not having for any of the cases an histopathological study. The treatment was performed the earliest as possible, and corticosteroids associated to oxaminiquine were used for all cases. The patients were studied as to sex, age, profession, city of origin, initial symptoms, laboratory tests related to schistosomiasis, the onset type of neurologic clinical symptoms and several CSF aspects. Treatment beginning was related with time of disease. Clinical evolution and sequelae were analysed. Abdominal contractions were observed in 10 cases several hours before the clinical picture had been clearly presented. Clinical diagnosis is justified since it is performed under severe clinical and laboratory evidences, as well as an accurate search for differential diagnosis. The authors think that the schistosomal meningomyeloradiculopathy is a well defined nosological entity by its neurological picture, as also from the pathological point of view. Finally, the authors suggest to neurological services of the country the planning and application of similar or even more detailed Protocol in order to obtain an early diagnosis and treatment for the disease, preventing so irreversible damages and sequelae very harmful for the patients in their social life.

Adolescent↗

[Medical education and health promotion in a day nursery institution].

PURPOSE: The authors present a community work experience in a 410 children Catholic day nursery institution. METHODS: Through non-structured interview and play, clinical-epidemiological observation and a survey of the health needs of three months to six years old children were made. RESULTS: Four relevant themes were identified for the population: hygiene, oral health, ocular health and substance abuse in some family members. In order to deal with these matters, an interactive educational program was organized which included acting activities, films, competitions and laboratory activities with artificial anatomic shapes. CONCLUSION: These activities give the medical student the opportunity to get acquainted with the not very well known social reality and be committed to the public health.

Attitude to Health↗

[Favism].

Favism is an acute hemolytic syndrome occurring in glucose-6-phosphate dehydrogenase (G6PD) deficient individuals after the consumption of fava beans. The authors report the clinical case of a 16 year-old boy admitted to hospital with an acute hemolytic episode after the ingestion of fava beans. Complementary studies revealed G6PD deficiency. A study of the family and a short review about favism is presented.

Abdominal Pain↗