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Biomedical subjects

E Ferrante

Publications and source records attributed to E Ferrante.

At least 55 records · Page 3Linked to original sources

11p13 deletion and reduced RBC catalase in a patient with aniridia, glaucoma and bilateral Wilms' tumor.

A rare case of a one-year-old child with Wilms' tumor, aniridia and glaucoma is described, in whom bone marrow chromosome analysis showed the presence of an interstitial microdeletion on the short arm of chromosome 11, presumably involving the p13 band. Research of the enzyme activity of RBC catalase showed a 40% reduction. This finding is compatible with the loss of the 11p13 band which contains the gene coding this enzyme. 11p13 deletion in Wilms' tumor and 13q interstitial deletion in retinoblastoma provide a rare case of prezygotic chromosome abnormality, which may be considered to have a determinant role in the tumor etiopathogenesis.

Catalase↗

Partial monosomy for a 21 chromosome. Report of a new case of r(21) and review of the literature.

A 21-month-old male infant with 46,XY,r(21) constitution identified by G and R banding is reported. The main clinical features were mental and physical retardation, microcephaly, antimongoloid slant of eyelids, malformed and low set ears. The clinical and cytogenetic findings of previously reported cases of r(21) are reviewed. Clinical resemblance to the eleven cases described in the literature is striking. The assays for superoxide dismutase (SOD-1) activity in the red blood cells from patient and his parents gave normal results. This findings is compatible with the hypothesis that only the segment distal to the SOD-1 locus, i.e. 21q22.2 leads to qter, has been lost during ring formation.

Aneuploidy↗

Increased HK1 activity levels in the red cells of a patient with a de novo trisomy 10p: t(Y;10)(p11;p12).

A male patient with mental retardation and typical clinical features of 10p trisomy syndrome was found to have a duplication of the short arm of chromosome 10 attached to the short arm of the Y chromosome. Quantitative evaluation of nine red cell enzymes showed significantly increased activity levels of HK1 and, to a lesser extent, of PK, PGI, 6PGD, and G6PD. It is suggested that the HK1 locus may be in the 10pter leads to p12 region. The increased levels of HK1 could affect other erythrocyte metabolic pathways slowing down the physiological rate of cellular senescence and result in increased activity levels of other cell-age-dependent enzymes.

Cell Survival↗

Translocation Y/5 resulting in Cri du Chat syndrome.

A case of 45,X,del(5)(p14/45,X,t(Y;5)(q11;p14) mosaicism is described. The patient displays the clinical features of the Cri du Chat syndrome, together with gross malformation of the distal left arm. The presence of male sex development is consistent with the location of factor(s) controlling the male sex determination in the paracentromeric area of the Y chromosome.

Arm↗