Linked Life Data

17276896

Source:http://linkedlifedata.com/resource/pubmed/id/17276896

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2007-2-5
pubmed:abstractText
The influence of Glu-Trp (EW) synthetic dipeptide isomers on hemopoietic progenitor cells and certain immune response reactions is determined by their optical and chemical properties. Thus, the all L-amino acid containing dipeptides L-Glu-L-Trp and L-gammaGlu-L-Trp have no effect on proliferation of committed and pluripotent CFU-S in intact bone marrow. The optical isomers of the Glu residue are an essential determinant of the EW dipeptide biological activity. The inversion of the amino acid optical form imparts suppressor properties: D-Glu-D-Trp,D--gammaGlu-D-Trp, D-Glu-L-Trp and D-gammaGlu-L-Trp inhibit proliferation of hemopoietic progenitors in intact bone marrow. The type of the peptide bond between L-Glu and Trp is another important factor for the biological activity of the L-Glu-containing peptides. Unlike L-Glu-D-Trp with alpha-peptide bond, the dipeptide L-gammaGlu-D-Trp with gamma-peptide bond stimulates CFU-S-8 proliferation in intact bone marrow. The diverse effects of the EW optical isomers on hemopoietic progenitors underlie the radioprotective properties of the D-Glu-containing dipeptides and the radiotherapeutic ones of the L-Glu dipeptides. In animals, pre-irradiation injection of D-Glu-D-Trp, D-gammaGlu-D-Trp, D-Glu-L-Trp, D-gammaGlu-L-Trp, or post-irradiation injection of L-Glu-L-Trp, L-gammaGlu-L-Trp promoted regeneration of the hemopoietic progenitor population.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
1567-5769
pubmed:author
pubmed:issnType
Print
pubmed:volume
7
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
375-82
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
The effects of the EW dipeptide optical and chemical isomers on the CFU-S population in intact and irradiated mice.
pubmed:affiliation
Department of Peptide Chemistry, Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry RAS, Moscow, Russia. immunotech@ica.net <immunotech@ica.net>
pubmed:publicationType
Journal Article