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Biomedical subjects

E Justrabo

Publications and source records attributed to E Justrabo.

At least 91 records · Page 5Linked to original sources
PubMed1979

[Mucinous adenocarcinomas of the scalp. Anatomo-clinical, histochemical and ultrastructural study of a case and a review of the literature].

The third recurrence of a primary mucinous adenocarcinoma of the right parietal scalp was studied by histochemistry and electron microscopy. Histochemically the mucin produced by this neoplasm was of the sialomucine type. Electron microscopy revealed a high differentiated tumour whose cells looked like eccrine mucinous ones. The natural history of this carcinoma is similar to that of 33 ones already published. The tumours, round and elevated, grow in 75 p. 100 of the cases in patients over 50 years of age. They are located on the face or the scalp and more rarely on the trunk. Such tumours are frequently misdiagnosed as carcinomas. But the knowledge of thier morphological and histochemical features should lead to the right diagnosis all the more since the various biological and radiological investigations do not discover other primary neoplasm. Besides if these neoplasms are not metastases they are quite different from the other sweat gland carcinomas. They have a better prognosis than these tumours. However they give local recurrences, lymph node or subcutaneous metastases and a fatal issue in 6 p. 100 of the cases.

Adenocarcinoma↗
PubMed1978

A complete form of testicular feminisation syndrome; a light and electron microscopy study.

A case is described of testicular feminisation syndrome in a 19-yr-old patient with a normal female appearance. A laparotomy with removal of the gonads was performed. The latter looked like testes with intraparenchymal nodules. Light and electron microscopy study of these nodules revealed the presence of immature seminiferous-like tubules and of Leydig cell clusters. The tubules were filled with clear Sertoli cells, few degenerative dark cells and scanty spermatogonia. Thin collagen bundles surrounded the tubules and the foci of Leydig cells without any crystals of Reinke. The immaturity of all these cellular components could be connected with a mutation at a repressive locus which could be responsible for the abnormalities observed in the different steps of androgen action at target cell level.

Adult↗
PubMed1977

Immunoprophylaxis and therapy of grafted rat colonic carcinoma.

Two independent lines of chemically-induced colonic carcinoma, serially graftable in syngeneic rats, have been used to investigate the effects of immunoprophylaxis and immunotherapy. Rats were immunised by various procedures, including BCG, irradiated tumour grafts, and cancer cells treated by mitomycin and neuraminidase. A partial inhibition of tumour growth was observed in one of the four protocols. On the other hand, a significant enhancement of tumour growth was obtained in two other experiments.

Adenocarcinoma↗
PubMed1977

Effects of oral and rectal BCG administration on chemically-induced rat intestinal carcinoma.

Intestinal carcinomas were induced by repeated subcutaneous injections of 1,2-dimethylhydrazine in syngereic BD-IX strain rats for 12 weeks. At the end of the treatment, one group received 2 doses of 50 mg BCG by a gastric tube, then a dose of 50 mg BCG by rectal instillation. The other group received no BCG. There was no significant difference in survival time, total number of cancers per rat, or cancer localization between the treated or untreated groups. Disseminated peritoneal metastases were more frequently found in BCG-treated animals. These results do not support the use of orally administered BCG in the treatment of human colorectal cancer.

Administration, Oral↗
PubMed1977

[Ultrastructural and genetic aspects of epidermolysis bullosa albo-papuloidea (author's transl)].

The authors report a case of epidermolysis bullosa dystrophica and albo-papuloidea, which led them to the discovery of eight similar cases in the same family. After analysing the main symptoms, including the histological ones, they underline the ultrastructural and genetic data. This disease can be described as a dermolysis bullosa with missing fibrils, abnormal connective tissue and an intense activity of fibroblasts. As far as we know, there is no genetic relationship with the HLA system in this dominant hereditary trouble, which is believed to be transmitted through different non-allelic genes.

Adult↗
PubMed1975

[Skin pigmentation after amiodarone administration. Histogenetic problems].

The authors present a pathological study of the skin in a 62 year-old man with facial pigmentation due to amiodarone. They found under the light microscope, cells resembling histiocytes filled with pigment. They were less numerous than usually reported, but were found associated with a pericapillary and periglandular lymphocytic infiltration, which raises the problem of iatrogenic lupus or Jessner-Kanoff's disease. Examination under the electron microscope, permitted identification of 5 groups of granulations, three of which had already been observed by Mrs. Fagola. These pigments correspond to lipofuscins, melanin, but also yet unidentified substances, may be metabolites of amiodarone.

Amiodarone↗