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@ARTICLE{Leithold:810068,
author = {Leithold, Leonie H. E. and Jiang, Nan and Post, Julia and
Niemietz, Nicole and Schartmann, Elena and Ziehm, Tamar and
Kutzsche, Janine and Shah, N. J. and Breitkreutz, Jörg and
Langen, Karl-Josef and Willuweit, Antje and Willbold,
Dieter},
title = {{P}harmacokinetic properties of tandem d-peptides designed
for treatment of {A}lzheimer's disease},
journal = {European journal of pharmaceutical sciences},
volume = {89},
issn = {0928-0987},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2016-02949},
pages = {31 - 38},
year = {2016},
abstract = {Peptides are more and more considered for the development
of drug candidates. However, they frequently exhibit severe
disadvantages such as instability and unfavourable
pharmacokinetic properties. Many peptides are rapidly
cleared from the organism and oral bioavailabilities as well
as in vivo half-lives often remain low. In contrast, some
peptides consisting solely of d-enantiomeric amino acid
residues were shown to combine promising therapeutic
properties with high proteolytic stability and enhanced
pharmacokinetic parameters. Recently, we have shown that D3
and RD2 have highly advantageous pharmacokinetic properties.
Especially D3 has already proven promising properties
suitable for treatment of Alzheimer's disease. Here, we
analyse the pharmacokinetic profiles of D3D3 and RD2D3,
which are head-to-tail tandem d-peptides built of D3 and its
derivative RD2. Both D3D3 and RD2D3 show proteolytic
stability in mouse plasma and organ homogenates for at least
24 h and in murine and human liver microsomes for 4 h.
Notwithstanding their high affinity to plasma proteins, both
peptides are taken up into the brain following i.v. as well
as i.p. administration. Although both peptides contain
identical d-amino acid residues, they are arranged in a
different sequence order and the peptides show differences
in pharmacokinetic properties. After i.p. administration
RD2D3 exhibits lower plasma clearance and higher
bioavailability than D3D3. We therefore concluded that the
amino acid sequence of RD2 leads to more favourable
pharmacokinetic properties within the tandem peptide, which
underlines the importance of particular sequence motifs,
even in short peptides, for the design of further
therapeutic d-peptides.},
cin = {INM-4 / ICS-6 / JARA-BRAIN},
ddc = {610},
cid = {I:(DE-Juel1)INM-4-20090406 / I:(DE-Juel1)ICS-6-20110106 /
$I:(DE-82)080010_20140620$},
pnm = {573 - Neuroimaging (POF3-573)},
pid = {G:(DE-HGF)POF3-573},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000376655600004},
pubmed = {pmid:27086111},
doi = {10.1016/j.ejps.2016.04.016},
url = {https://juser.fz-juelich.de/record/810068},
}