Linked Life Data

16644254

Source:http://linkedlifedata.com/resource/pubmed/id/16644254

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2006-5-22
pubmed:abstractText
Insulin-like growth factors (IGFs) are evolutionarily ancient polypeptides, with potent metabolic actions, affecting cell development and growth. The IGF system consists of two ligands: IGF-I and IGF-II, several binding proteins and high-affinity transmembrane receptors. To understand growth regulation in the teleost shi drum, Umbrina cirrosa, we cloned IGF-I and IGF-II cDNAs, studied their expression and determined the cellular localization of IGF-II peptide by immunohistochemistry. A fragment of 1110 nucleotides, coding for U. cirrosa IGF-I (ucIGF-I), was cloned from liver by PCR. It includes an open reading frame of 561 nucleotides, encoding a 187 amino acid preproIGF-I. A fragment of 938 nucleotides that includes part of the coding sequence and the 3' UTR of IGF-II (ucIGF-II) was cloned as well. Sequence analysis of ucIGF-I and ucIGF-II showed a high degree of homology with known fish IGF-I and IGF-II. Real-Time PCR showed a higher expression of IGF-I and IGF-II in liver, compared to all other tissues analysed. IGF-II peptide was detected in larval liver, intestine, gills and heart musculature. After metamorphosis, reactivity was particularly evident in the kidney and in red fibres of skeletal muscle. These results add novel information on the nucleotide sequence of IGF-I and IGF-II in a marine teleost, the shi drum, that was recently introduced to the mariculture industry in southern Europe and emphasizes the conservation in the 5' UTR of IGF-I among teleosts. Furthermore, this study suggests, on the basis of a combined approach of RT-PCR, Real-Time PCR and immunohistochemistry that IGF-I and IGF-II are involved in the regulation of somatic growth in the shi drum.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
1096-4959
pubmed:author
pubmed:issnType
Print
pubmed:volume
144
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
137-51
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
Cloning and expression of insulin-like growth factors I and II in the shi drum (Umbrina cirrosa).
pubmed:affiliation
Department of Experimental Veterinary Sciences, Faculty of Veterinary Medicine, University of Padua, Agripolis, 35020 Legnaro (PD), Italy. marco.pat@unipd.it
pubmed:publicationType
Journal Article, Comparative Study