ReviewJournal of physiology and biochemistry2002
Nucleoside transporters in absorptive epithelia.
Review in Journal of physiology and biochemistry, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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.
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.
Who cites it
6 citing papers in PubMed, 25 citations in OpenAlex.
- Genetic and clinical determinants of mizoribine pharmacokinetics in renal transplant recipients.European journal of clinical pharmacology · 2021Trial
- Increased renal elimination of endogenous and synthetic pyrimidine nucleosides in concentrative nucleoside transporter 1 deficient mice.Nature communications · 2023Article
- Extracellular guanosine regulates extracellular adenosine levels.American journal of physiology. Cell physiology · 2013Article
- Involvement of Multiple Transporters-mediated Transports in Mizoribine and Methotrexate Pharmacokinetics.Pharmaceuticals (Basel, Switzerland) · 2012Article
- Expression and hepatobiliary transport characteristics of the concentrative and equilibrative nucleoside transporters in sandwich-cultured human hepatocytes.American journal of physiology. Gastrointestinal and liver physiology · 2008Article
- Long term endocrine regulation of nucleoside transporters in rat intestinal epithelial cells.The Journal of general physiology · 2004Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
There are two families of nucleoside transporters, concentrative (termed CNTs) and equilibrative (called ENTs). The members of both families mediate the transmembrane transport of natural nucleosides and some drugs whose structure is based on nucleosides. CNT transporters show a high affinity for their natural substrates (with Km values in the low micromolar range) and are substrate selective. In contrast, ENT transporters show lower affinity and are more permissive regarding the substrates they accept. Both types of transporters are tightly regulated in all cell types studied so far, both by endocrine and growth factors and by substrate availability. The degree of cell differentiation and the proliferation status of a cell also affect the pattern of expressed transporters. Although the presence of both types of transporters in the cells of absortive epithelia suggested the possibility of a transepithelial flux of nucleosides, their exact localization in the different plasma membrane domains of epithelial cells had not been demonstrated until recently. Concentrative transporters are found in the apical membrane while equlibrative transporters are located in the basolateral membrane, thus strengthening the hypothesis of a transepithelial flux of nucleosides.
Indexed as
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What OpenQuestion holds
Registered trials
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.