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Biomedical subjects

M Shani

Publications and source records attributed to M Shani.

141 records · Page 8Linked to original sources

Hepatic computerized tomography in the Dubin-Johnson syndrome: increased liver density as a diagnostic aid.

Computed tomography of the liver was performed in 17 patients with Dubin-Johnson syndrome as well as 50 control patients free of liver disease. Multiple readings of liver attenuation values were made in the patients in these two groups and their values compared. The Dubin-Johnson group had liver attenuation values significantly higher than the control group but considerable overlap between the 2 groups existed. It is concluded that computed tomography may be useful as confirmatory evidence of Dubin-Johnson syndrome.

Female↗

Tissue-specific expression of rat myosin light-chain 2 gene in transgenic mice.

One approach to determining how the differential expression of specific genes is regulated in higher organisms is to introduce cloned copies of the genes (or parts of the genes) into the genomes of individual organisms from the very beginning of their development. The way in which the exogenous genetic information behaves during the development of the experimental organisms can then provide a means of defining the DNA sequences that restrict the expression of the gene to specific cell types and times of development. So far, several different genes have been introduced into the genomes of mice, but in only a few cases have the exogenous genes retained the tissue specificity of expression of the equivalent endogenous genes. I report here that in two out of three 'transgenic' mice carrying copies of the rat gene for skeletal muscle myosin light chain 2, the exogenous gene is expressed specifically in skeletal muscle cells. The sequences contained in the cloned copy of the myosin light-chain 2 gene used in these experiments are thus sufficient to confer a tissue-specific pattern of expression.

Animals↗

Aplastic anemia in Isreal: evaluation of the etiological role of chloramphenicol on a community-wide basis.

A nationwide study of aplastic anemia in Israel revealed a mean yearly incidence of 7.1/1,000,000 in males and 8.7/1,000,000 in females. Twenty-five per cent of the cases reported had an apparent chloramphenicol etiology. Ten patients, five treated with chloramphenicol and five without it, developed acute leukemia. The median survival was 11 months in males and 28 in females. Survival was particularly inferior in chloramphenicol-related cases, suggesting that this group constitutes a specific entity.

Acute Disease↗