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Biomedical subjects

A Pinto

Publications and source records attributed to A Pinto.

At least 379 records · Page 21Linked to original sources
PubMed1979

Complement fixation reaction in toxoplasmosis.

In toxoplasmosis serodiagnosis the complement fixation reaction (CF) is barely sensitive and specific and supplies results below the general standard levels of this technique. The reasons for this deficiency are discussed and detected in the preparation modalities of the toxoplasma antigens. Two diagnostic antigens are prepared and evaluated; the former, a suspension of whole toxoplasma (WT) the latter a total extract of toxoplasma (TET). The antigens are characterized by the preparative process, culture host and the extractive technique with a modified ultrasonic disintegrator. The antigens are used in the CF reaction, performed with the modified LBCF method, with a 100% hemolysis reading (H 100). The LBCF-H 100 reaction with WT and TET antigens is evaluated parellely to the indirect immunofluorescence reaction (IF) and dye test (DT) on 2514 human sera from cases os suspected toxoplasmosis and pregnant women. The analysis of the serological results pointed out that the LBCF-H 100 reaction performed with WT antigen, shows a sensitivity and specificity equivalent to that of the DT. The LBCF-H 100 reaction with TET antigen extends the range of the antibodies detectable with WT antigen. The optimal serological combination to identify the highest number of seropositive cases of toxplasma infection is given by LBCF-TET and IF reactions.

Complement Fixation Tests↗
PubMed1979

Polymorphic pemphigoid.

We describe 20 patients with a chronic polymorphic eruption; they shared clinical, histopathological, and therapeutic features of both dermatitis herpetiformis and bullous pemphigoid (BP). In 14 of these 20 cases, direct and indirect immunofluorescence studies corresponded to BP. The remaining six patients showed IgA deposits in a linear pattern at the basement membrane zone, and two of these six showed IgA pemphigoid antibodies in their sera as well. No significant clinical and histological differences were detected in the patients, in connection with the immunological findings. Furthermore, one patient's condition, which was studied by repeated immunofluorescence examinations, changed from a linear IgA pattern and a negative indirect test to a linear IgG pattern and a positive reaction for IgG pemphigoid antibodies. We concluded that these cases constitute a polymorphic variant of BP.

Adult↗
PubMed1978

Medical therapy of cerebral ischemia. Vasoactive and eumetabolic therapy.

After briefly evaluating the contraindications and indications of vasoactive and eumetabolic therapy of cerebral ischemia, the paper considers the main drugs at present in use in therapy of the syndrome induced by diffused cerebral arteriosclerosis. Among the drugs with a mainly vasoactive effect, consideration is given in particular to nifedipine, cetiedil and nicergoline, which induced not only an improvement in the subjective symptoms, but also an increase--which was notable at times--in the sphygmic amplitude of the rheoencephalogram. Where drugs with a mainly eumetabolic action are concerned, xanthinol nicotinate, vincamine and (-)eburnamonine are discussed. The latter, in particular, proved effective in improving intellective recovery and mediate and deferred memory, accompanied by a fair increase in the sphygmic speed and amplitude on the rheoencephalogram.

Brain Ischemia↗
PubMed1978

Clinical and histological kidney involvement in human kala-azar.

A 19-year-old women developed prolonged fever, weight loss, hepatosplenomegaly, anemia, leukopenia, and hyperglobulinemia. Appropriate tests indicated that she had visceral leishmaniasis (kala-azar). Urinalysis demonstrated significant proteinuria and microhematuria with the presence of red cell casts. A kidney biopsy was performed. Light microscopy showed a slight mesangial thickening and segmental mesangial proliferation. Immunofluorescence demonstrated deposits of immunoglobulins A and M, complement, and fibrinogen. Electron microscopy showed subendothelial and intramembranous deposits. After treatment with N-methylglucamine antimonate the proteinuria and microhematuria disappeared and the patient recovered uneventfully.

Adult↗