Evidence map›Paper›PMID 18762710›Full record

ReviewDrug metabolism and pharmacokinetics2008

Role and relevance of PEPT2 in drug disposition, dynamics, and toxicity.

Mohamed A Kamal, Richard F Keep, David E Smith

Open access · greenAbstract readReview
In one paragraph

Review in Drug metabolism and pharmacokinetics, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
1.9field-weighted citation impact, top 14% 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

37 citing papers in PubMed, 81 citations in OpenAlex.

  1. Trial
  2. Article
  3. Beyond SGLT2: proximal tubule transporters as potential drug targets for chronic kidney disease.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2025
    Review
  4. Orphan lysosomal solute carrier MFSD1 facilitates highly selective dipeptide transport.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  5. Article
  6. Review
  7. Review
  8. Article
  9. Article
  10. Article
  11. Review
  12. Review
  13. Review
  14. Article
  15. Article
  16. Membrane Transporters in Human Parotid Gland-Targeted Proteomics Approach.International journal of molecular sciences · 2019
    Article
  17. Article
  18. Article
  19. Article
  20. 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

3 authors at 1 institution in 1 country.

Mohamed A KamalDepartment of Pharmaceutical Sciences, University of Michigan, Ann Arbor, MI 48109-5633, USA.
Richard F Keep
David E Smith
University of Michigan–Ann Arbor · US

Funding

INTERDEPARTMENTAL TRAINING IN PHARMACOLOGICAL SCIENCEST32GM007767 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI ISOM, LORI L. · 1985 to 2019
$10.2M
VASCULAR GLUCOSE TRANSPORTERS IN HYPERTENSIONP01HL018575 · NHLBI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI GREKIN, ROGER J · 1985 to 2003
$5.5M
Role of PEPT2 in Peptide/Mimetic Disposition-DynamicsR01GM035498 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI SMITH, DAVID E · 1988 to 2013
$3.7M
Endothelial Preconditioning and Ischemic Brain InjuryR01NS034709 · NINDS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI KEEP, RICHARD F · 1996 to 2013
$3.6M
NHLBI NIH HHS P01 HL018575NIGMS NIH HHS R01 GM035498NIGMS NIH HHS T32 GM007767NINDS NIH HHS R01 NS034709
6 · The paper itself

Abstract

Pept2 knockout mice are an important tool to evaluate the evolving role and relevance of this proton-coupled oligopeptide transporter beyond drug disposition, where the transporter also modulates the pharmacodynamic and toxicodynamic effects of drug substrates. Our in vivo studies with glycylsarcosine in Pept2 knockout mice have established "proof of concept" that PEPT2 can have a significant effect on dipeptide disposition. Subsequent studies with the aminocephalosporin antibiotic cefadroxil have shown relevance to pharmacology and infectious disease. Finally, studies with the endogenous peptidomimetic 5-aminolevulinic acid have demonstrated relevance to toxicology in the framework of porphyria- and lead-induced neurotoxicity. These studies have consistently demonstrated the dual action of PEPT2 with respect to its apical localization in choroid plexus epithelium and kidney in: 1) effluxing substrates from CSF into choroid plexus, thereby affecting regional pharmacokinetics in brain; and 2) reabsorbing substrates from renal tubular fluid into proximal tubules, thereby affecting systemic pharmacokinetics and exposure. Moreover, these studies have shown that the regional effect of PEPT2 in limiting substrate concentrations in the CSF is more dramatic than its effect in increasing systemic exposure. In the case of 5-aminolevulinic acid, such regional modulation of drug disposition translates directly into significant changes in neurotoxicity.

Indexed as

Aminolevulinic AcidAnimalsCefadroxilDipeptidesHumansPeptide Transporter 1SymportersAminolevulinic AcidCefadroxilDipeptidesglycylsarcosinehydrogen-coupled oligopeptide transporter PepT2Peptide Transporter 1Symporters

Identifiers

PMID18762710
PMCPMC2898562
OpenAlexW1991896541

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.