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Biomedical subjects

G Sebastio

Publications and source records attributed to G Sebastio.

64 records · Page 4Linked to original sources
PubMed1985

The human urokinase-plasminogen activator gene and its promoter.

The urokinase type of plasminogen activator (uPA) is subject to regulation by hormones, phorbol esters and oncogenic transformation. This enzyme has been suggested to play a key role in processes involving cell migration and tissue remodeling, and to be essential for tumor metastasis. In order to study these processes, we have isolated the human uPA gene, and have determined its entire nucleotide sequence. The gene is organized in 11 exons and is 6.4 kb long. The 5' end of uPA mRNA has been determined by both S1 mapping and primer extension experiments. A fragment of 800 bp containing the entire 5' flanking region shows promoter activity when introduced upstream of a bacterial chloramphenicol acetyltransferase gene and introduced into human cells. The hexanucleotide sequence GGCGGG, previously found at similar regions in several viral and eukaryotic promoters and shown to be essential for promoter activity (McKnight et al. (1984) Cell, 37, 253-262), is repeated three times between the CAAT and the TATA boxes.

Base Sequence↗
PubMed1983

Severe cardiac anomalies in sibs with Larsen syndrome.

Larsen syndrome is characterised by congenital anterior dislocation of the knees, associated with other joint dislocations, and a characteristic facies. Autosomal recessive and dominant inheritance have been proposed. A brother and a sister with consanguineous parents, suggesting autosomal recessive inheritance, were found to have the typical features of Larsen syndrome. In addition, they had severe cardiac manifestations, never reported before in familial cases of the syndrome. We suggest that the recessive form is probably more severe than the dominant form because of the frequent presence of concomitant cardiac anomalies.

Abnormalities, Multiple↗
PubMed1977

Leprechaunism with mosaicism 46, XX/47, XX extra ring chromosome.

A case of leprechaunism with a chromosomal abnormality is reported. The patient was a female infant, born to healthy, consanguineous young parents. Her course was one of extreme marasmus, with death at 3 months of age. She presented the classical features of the syndrome and chromosome mosaicism 46, XX/47, XX, +r(?). It was not possible to identify the origin of the extra ring chromosome. It is difficult to establish the role of such a cytogenetic finding in the aetiology of the syndrome.

Abnormalities, Multiple↗
PubMed1976

Family study of inherited syndrome with multiple congenital deformities: symphalangism, carpal and tarsal fusion, brachydactyly, craniosynostosis, strabismus, hip osteochondritis.

A syndrome of brachydactyly (absence of some middle or distal phalanges), aplastic or hypoplastic nails, symphalangism (ankylois of proximal interphalangeal joints), synostosis of some carpal and tarsal bones, craniosynostosis, and dysplastic hip joints is reported in five members of an Italian family. It may represent a previously undescribed autosomal dominant trait.

Abnormalities, Multiple↗
PubMed1976

Larsen syndrome in two generations of an Italian family.

This paper describes a familial case of Larsen syndrome. Typical anomalies were present in the propositus and 2 of his 6 daughters. In addition, all patients had progressive deafness and the 2 daughters had cleft palate. The certain exclusion of any consanguinity between the couple, suggests, in this instance, the dominant mode of transmission of the syndrome.

Abnormalities, Multiple↗
PubMedDate not supplied

Genetic homogeneity of lysinuric protein intolerance.

Lysinuric protein intolerance (LPI) is an autosomal recessive disorder in which transport of the cationic amino acids lysine, arginine and ornithine is defective at the basolateral membrane of the epithelial cells in the intestine and renal tubules. LPI is unusually common in Finland, but patients have been described on all continents. Linkage analysis in Finnish LPI families recently assigned the LPI gene locus to a 10 cM interval between markers D14S72 and MYH7 on the long arm of chromosome 14. In the present study linkage analysis of LPI families from six different non-Finnish populations strongly suggests genetic homogeneity in LPI. Peak lod scores were obtained at the chromosomal area between D14S72 and MYH7 with the same markers as in the Finnish families. The non-Finnish families showed no linkage disequilibrium except in an Italian family cluster, whereas strong allelic association in the Finnish families implies that LPI in Finland is caused by a founder mutation.

Amino Acid Metabolism, Inborn Errors↗
PubMedDate not supplied

[Efficacy of dietetic treatment in a case of galactosemia diagnosed late].

The authors describe a six months old girl affected by galactosemia, due to Galacto-1-phosphate Uridyl Transferase deficiency. The patient presented with hepatosplenomegaly and failure to thrive, without neurological impairment or cataracts. In this case removal of galactose from diet, although lately performed, resulted in normal growth and development. The authors emphasize the importance of ruling out galactosemia, even if clinical picture is unusual.

Female↗