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Biomedical subjects

F Mitelman

Publications and source records attributed to F Mitelman.

At least 451 records · Page 25Linked to original sources

14q+ marker chromosome in an EBV-genome-negative lymph node without signs of malignancy in a patient with EBV-genome-positive nasopharyngeal carcinoma.

In a patient with an EBV-genome-positive nasopharyngeal carcinoma, an EBV-genome-negative inguinal lymph node without histological evidence of malignant lymphoma or metastatic carcinoma growth was found to contain a 14q+ marker chromosome, identified as an 8;14 translocation, in all cells analyzed. This observation indicates that chromosome aberrations may precede histological signs of malignancy. The possible implication of this finding in relation to the postulated role of the 14q+ marker and lymphoma development is discussed.

Adult↗

Another approach to in vivo estimation of genetic damage in humans.

Direct measurements of the genetic hazards to man have been determined previously by the appearance of elevated in vivo levels of chromosome aberrations. Here we report that interindividual variations in N-acetoxy-2-acetyl-aminofluorene-induced unscheduled DNA synthesis values parallel the actual in vivo levels of chromosome damage and, therefore, may be a rapid useful supplement in genetic risk assessment for humans.

2-Acetylaminofluorene↗

Deletion of the long arm of chromosome 11: a clinical entity.

A deletion of the long arm of chromosome No. 11, an aberration undetectable in conventional chromosome staining, was identified with Giemsa banding in a female infant with multiple congenital anomalies. A survey is given of the clinical findings in the few cases so far reported.

Abnormalities, Multiple↗

Increased frequency of chromosome aberrations in workers exposed to styrene.

Chromosomal aberrations in lymphocytes from peripheral blood were significantly more frequent in six workers from a plant manufacturing polyester resin boats (average 10.8 per 100 cells) than in six age-and sex-matched referents (5.2 per 100 cells). The contamination of the workroom air with styrene, as measured on three occasions within three years in different areas of the plant, was 50--400 mg/m3.

Adult↗

Absence of late-replicating X-chromosome in a female patient with acute myeloid leukemia and the 8;21 translocation.

Autoradiography was used to demonstrate that the x-chromosome of the 45,X,-X,t(8;21) stemline of a female patient with acute myeloid leukemia (AML) was the active X-chromosome. This suggested that in patients housing AML with the 8;21 translocation, the loss of the inactive X-chromosome in females and of the Y in males (which is known to occur in nearly half of the patients) entails selective advantage to the stemline.

Adult↗