Search PubMed⌕ Search

Biomedical subjects

A Blanes

Publications and source records attributed to A Blanes.

30 records · Page 2Linked to original sources

[Infections due to herpes-varicella viruses in Hodgkin's disease (author's transl)].

The infections due to herpes-varicella viruses occurring in 191 patients with Hodgkin's disease form the basis of this report. There were overall 41 episodes (26.7%) in 40 patients, distributed as follows: varicella in three cases, atypical herpes-varicella in two cases, and herpes zoster in 36 cases, the latter showing systemic spread in seven instances, one to the central nervous system (myelitis) and six to the skin. The mortality was 2.5% of all infections, and 33% of the varicella cases. Morbidity was apparent as postherpetic neuralgia in seven patients (19.4%), postherpetic paraplegia in one case (2.5%), and severe thrombocytopenia in another case (2.5%). The statistical study of the factors contributing to the development of reactivation episodes demonstrated that neither age, sex, or previous splenectomy were influential. The results obtained in relation to the stage and histologic type of Hodgkin's disease can not be fully evaluated because of the artifact introduced by other variables such as type of therapy and observation time. There was a clear relationship with the aggressiveness of therapy, because 81.7% of the viral episodes occurred in patients submitted to total radiotherapy with or without chemotherapy, or with partial radiotherapy plus chemotherapy. In the patients with systemic spread there was a clear relationship with prior splenectomy (p less than 0.005). The clinical features of these patients are commented upon.

Adolescent↗

[Current considerations on pathology in Ewing's sarcoma].

The authors make a review of the correlation between the clinical and pathological data in Ewing's sarcoma. The morphological lesions are generally wider than those given by the radiographic record. The microscopic picture is the same for both osseous and extraosseous cases. The different cell types of Ewing's sarcoma are indicated, all of them giving rise to a similar clinical picture. The histogenesis of the disease is still discussed, the most favored hypothesis being that it originates in the non-differentiated mesenchyma of the primitive bone marrow.

Bone Neoplasms↗

Intestinal mucosal changes following induced hypothyroidism in the developing rat.

In this study, morphological changes which occur in the small intestine of hypothyroid rats are described. Hypothyroidism was induced during the first 24 h postnataly. - Samples from duodenojejunal and ileocecal junctions were taken, and histologic, histomorphometric, and ultrastructural studies were performed. The most prominent feature was the decrease of the villous height and total mucosal thickness. At electron microscopic level, microvillous height was also markedly decreased. These changes probably represent a direct effect of hormonal deprivation upon the intestinal mucosa, combined with the effect that hypothyroidism may have on the villi.

Animals↗

Early changes in the Schwann cells in experimental allergic neuritis.

Experimental allergic neuritis (EAN) was induced in guinea-pigs by intradermal injection of rabbit peripheral nerve emulsified in Freund's adjuvant. Both sciatic nerves were obtained between 12--24 hr after clinical symptoms were evident. Several fascicles from each nerve were isolated for histochemical studies with NADH-diaphorase (NADH) and acid phosphatase (AP) applied to teased nerve fibres. Small pieces were processed for electron microscopy, and a fascicle was teased after staining with osmium tetroxide. In isolated nerve fibres stained with histochemical techniques myelin lesions of segmental character were found closely related to inflammatory cells; Schwann cell cytoplasm in contact with mononuclear cells showing a heavy enzymatic activity (NADH and AP). Under polarized light, the underliying myelin showed focal loss of birefringence. Some electron-microscopic pictures suggested active myelin breakdown by mononuclear cells. The possibility of primary Schwann cell damage by mononuclear cells with subsequent demyelination is discussed.

Acid Phosphatase↗

A case of hairy cell leukemia resembling asymptomatic chronic liver disease on presentation.

Hepatic infiltration in hairy cell leukemia is quite common but results of liver test are usually normal. A 44-year-old man with a history of alcohol abuse was evaluated for persistent elevation in serum aminotransferases. A percutaneous liver biopsy showed an extensive mononuclear cell infiltrate in the sinusoids and this finding led to the diagnosis of hairy cell leukemia. Liver involvement in hairy cell leukemia is discussed. Hairy cell leukemia should be considered as a potential cause of persistent increase in liver-related enzymes.

Adult↗