Search PubMed⌕ Search

Biomedical subjects

V Amato Neto

Publications and source records attributed to V Amato Neto.

At least 37 records · Page 2Linked to original sources
PubMed1983

Interstitial nephritis in human kala-azar.

Little is known about renal alterations in kala-azar. The renal histopathology of 21 patients admitted to hospital in São Paulo, Brazil, during the period 1960 through 1981 who either died or had a renal biopsy (two cases) is presented. All the specimens showed oedema and diffuse interstitial inflammatory infiltrate of lymphocytes and plasma cells with more compact foci of cells in some areas. In general, glomeruli did not show any important alterations. These aspects were interpreted as acute interstitial nephritis aetiologically related to later phase kala-azar. This interstitial alteration does not usually seem to determine any clinical manifestations. However, it seems that moderate and severe cortical intersitial damage contribute to the onset of renal insufficiency when severe clinical complications occur. The precise mechanisms of this lesion need further investigation since the aetiological agents have not been seen causing the damage locally.

Adolescent↗
PubMed1980

A prospective clinical study of the mononucleosis syndrome in a developing country.

A prospective aetiologic analysis made of 70 children and adults with the clinical and haematologic features of infectious mononucleosis (IM) in Sao Paulo, Brazil, revealed 65.7% due to EBV (31 heterophile antibody positive (HA+), 15 HA negative (HA-) cases), 8.6% due to T. gondii and 4.3% due to CMV. One case was related to viral hepatitis and one to drug hypersensitivity. The other 18.6% were of unknown cause. In the 46 IM cases positive tests were found for EBV/IgM in 93.5%, for heterophile by the absorbed horse Rbc test in 64.2% and by sheep Rbc in 37%. The immune-adherence haemagglutination test was slightly more sensitive than the horse Rbc test in 39 IM sera tested. In 41 EBV/IgM positive sera, EBV/IgA was present in 17/25 containing heterophile antibody and in 2/16 lacking heterophile antibody; anti-EA was present in 85%. The average age of HA+ IM cases was 13.2 years and of HA- cases 4.7 years. Three HA+ and 5 HA- IM cases occurred in the 0-2 year old age group. Few clinical features differentiated between aetiological agents. Exudative tonsillitis was the most helpful one and occurred in 67.7% of HA+ IM cases, 26.7% of HA- cases, in 1 of 3 CMV cases, and not at all in 6 T. gondii infections.

Adolescent↗
PubMed1979

In vitro cellular immunity in Chagas' disease.

In vitro delayed hypersensitivity was studied in patients with either the chronic or the indeterminate phase of Chagas' disease. Normal healthy individuals were used as controls. The leucocyte migration inhibition test was applied using an antigen an extract of culture forms of T. cruzi or an extract of normal rat heart. The results showed that patients with the chronic phase of the disease reacted significantly with both antigens, whereas most patients with the indeterminate phase did not react with heart antigen and only five out of fourteen (35%) reacted with T. cruzi antigen. It is suggested that these individuals may represent patients about to develop the chronic phase of the disease. The relevance of these findings to the immune mechanism influencing the onset of the chronic phase of Chagas' disease is discussed.

Adolescent↗
PubMed1977

Efficacy of various drugs for treatment of giardiasis. A comparative study.

A total of 172 patients with giardiasis were treated with four of the drugs most commonly used for this infection. All drugs were used in their usual posologic schedules. The cure rates achieved with furazolidone, nimorazole, metronidazole, and tinidazole were; respectively, 72%, 94%, 87%, and 97%, while in a control group given no medication stools of only 35% of the patients became negative. Side effects were of minor importance in patients treated with nimorazole and metronidazole, and were somewhat more frequent and severe in those treated with furazolidone. Tinidazole produced no side effects.

Antiprotozoal Agents↗