polyamines


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polyamines (pol´ēəmēnz´),

n.pl many amines; polymers of amine, many of which normally occur in body constituents of wide distribution and are essential growth factors for microorganisms.

polyamines

widely distributed cationic cell components especially abundant in rapidly proliferating cells. Major polyamines are spermidine and spermine but the diamine, putrescine is often grouped in this category. Multiple role in stabilizing intracellular negatively charged nucleic acids and membranes.
References in periodicals archive ?
Zhao and colleagues found that when the cells were in an electric field, the positively-charged polyamines tend to accumulate at the side of the cell near the negative electrode.
Modulation of fecal polyamines by viewing humorous films in patients with atopic dermatitis.
It was assumed that polyamines treatment has the potential for maintenance of quality and vase life extension of cut flowers.
Others (Polysaccharides, PEG, PVP, polyamines, quaternary ammonium compounds, etc.
This work deals with the polymerization of a hydroxylaled aziridine, 1-(2-hydroxyethyl)aziridine (EA-OH), which could lead to a suitable starting hydroxylaled polymer for the preparation of more complex polyamines through chemical modification.
Although MTX indeed suppresses polyamine levels in lymphocytes of rheumatoid arthritis patients, this effect is also reversed by folic acid.
Dr Leah Vardy, Principle Investigator at the IMB and lead author of the paper, said, "The polyamines that Amd1 regulate have the potential to regulate many different aspects of self renewal and differentiation.
Then they interrupted the conversion of putrescine into other polyamines and found that this step enhanced the protection, indicating that putrescine was the beneficial member of the family.
Polyamines also have been linked to the production of lycopene and other nutrients that lower the risk of certain cancers and other diseases.
Polyamines have also been linked to the production of lycopene and other nutrients that lower our risk of developing certain cancers and other diseases, making them a prime target for investigation, according to Mattoo.
Besides being a protein constituent, Arg is also involved in the synthesis of creatine and polyamines, proline, as a substrate for the synthesis of collagen and nitric oxide (NO), and in the secretion of growth hormone (GH) and insulin-like growth factors (IGF).
Macrocyclic polyamines are known to coordinate cations though the lone pairs of electrons.