Evidence map›Paper›PMID 18455890›Full record

ArticleInternational journal of pharmaceutics2008

Peptide prodrugs: improved oral absorption of lopinavir, a HIV protease inhibitor.

Sheetal Agarwal, S H S Boddu, Ritesh Jain, Swapan Samanta, Dhananjay Pal, Ashim K Mitra

Open access · greenAbstract readComparative Study
In one paragraph

Article in International journal of pharmaceutics, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.1field-weighted citation impact, top 13% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 55 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Review
  5. Amino Acids in the Development of Prodrugs.Molecules (Basel, Switzerland) · 2018
    Review
  6. Review
  7. Article
  8. Prodrug approach to improve absorption of prednisolone.International journal of pharmaceutics · 2015
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Ocular sustained release nanoparticles containing stereoisomeric dipeptide prodrugs of acyclovir.Journal of ocular pharmacology and therapeutics : the official journal of the Association for Ocular Pharmacology and Therapeutics · 2011
    Article
  14. Article
  15. Interaction of ocular hypotensive agents (PGF2 alpha analogs-bimatoprost, latanoprost, and travoprost) with MDR efflux pumps on the rabbit cornea.Journal of ocular pharmacology and therapeutics : the official journal of the Association for Ocular Pharmacology and Therapeutics · 2009
    Article
  16. FK506-binding protein (FKBP) partitions a modified HIV protease inhibitor into blood cells and prolongs its lifetime in vivo.Proceedings of the National Academy of Sciences of the United States of America · 2009
    Article
  17. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Sheetal AgarwalDivision of Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City, 5005 Rockhill Road, Kansas City, MO 64110-2499, USA.
S H S Boddu
Ritesh Jain
Swapan Samanta
Dhananjay Pal
Ashim K Mitra
University of Missouri–Kansas City · US

Funding

Protease Inhibitor Analogues for Enhanced Transport Across Blood-Brain InterfacesR01AI071199 · NIAID · UNIVERSITY OF MISSOURI KANSAS CITY · PI MITRA, ASHIM K. · 2008 to 2011
$1.5M
Cellular Efflux and Metabolism of Protease InhibitorsR01GM064320 · NIGMS · UNIVERSITY OF MISSOURI KANSAS CITY · PI MITRA, ASHIM K · 2002 to 2004
$609k
NIAID NIH HHS R01AI071199NIGMS NIH HHS R01 GM064320NIGMS NIH HHS R01GM64320
6 · The paper itself

Abstract

Lopinavir (LVR) is extensively metabolized by CYP3A4 and is prevented from entering the cells by membrane efflux pumps such as P-gp and MRP2. In an approach to evade the first-pass metabolism and efflux of LVR, peptide prodrugs of LVR [valine-valine-lopinavir (VVL) and glycine-valine-lopinavir (GVL)] were synthesized. Prodrugs were identified with 1H and 13C NMR spectra and LC/MS/MS was employed to evaluate their mass and purity. Solubility studies indicated that the prodrugs have enhanced aqueous solubilities relative to parent LVR. Accumulation and transport data of VVL and GVL across MDCKII-MDR1 and MDCKII-MRP2 cells indicated evasion of prodrugs' efflux by P-gp and MRP2 significantly. Permeability studies across Caco-2 cells indicated that the prodrugs are transported by peptide transporters and have increased permeability as compared with LVR. VVL and GVL exhibited significantly better degradation rate constants as compared with LVR in rat liver microsomes. Enzymatic stability studies in Caco-2 cell homogenate indicated that the peptide prodrugs are first converted to the ester intermediate (amino acid prodrug VL) and then finally to the parent drug. Overall, the advantages of utilizing peptide prodrugs include chemical modification of the compound to achieve targeted delivery via peptide transporters present across the intestinal epithelium, significant evasion of efflux and CYP3A4 mediated metabolism and significantly better solubility profiles. Therefore, in vitro studies demonstrated that peptide prodrug derivatization of LVR may be an effective strategy for evading its efflux and enhancing its systemic concentrations.

Indexed as

Administration, OralAnimalsBiological TransportCaco-2 CellsCell LineCytochrome P-450 CYP3ADipeptidesDogsDrug Delivery SystemsEnzyme StabilityHIV Protease InhibitorsHumansLopinavirMembrane Transport ProteinsMicrosomes, LiverProdrugsCYP3A4 protein, humanCytochrome P-450 CYP3ADipeptidesglycine-valine-lopinavirHIV Protease InhibitorsLopinavirMembrane Transport ProteinsProdrugsPyrimidinonesvaline-valine-lopinavir

Identifiers

PMID18455890
PMCPMC2528298
OpenAlexW1998053936

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.