Evidence map›Paper›PMID 11554426›Full record

ArticleEuropean journal of drug metabolism and pharmacokinetics

Brain microdialysis and PK/PD correlation of pregabalin in rats.

M R Feng, D Turluck, J Burleigh, R Lister, C Fan, A Middlebrook, C Taylor, T Su

Abstract read
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In one paragraph

Article in European journal of drug metabolism and pharmacokinetics. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
0.1field-weighted citation impact, top 65% 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 44 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Article
  6. Age-associated physiological and pathological changes at the blood-brain barrier: A review.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2017
    Review
  7. Understanding the hysteresis loop conundrum in pharmacokinetic/pharmacodynamic relationships.Journal of pharmacy & pharmaceutical sciences : a publication of the Canadian Society for Pharmaceutical Sciences, Societe canadienne des sciences pharmaceutiques · 2014
    Article
  8. Pregabalin for the management of partial epilepsy.Neuropsychiatric disease and treatment · 2008
    Article
  9. Article
  10. 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

8 authors at 2 institutions in 1 country.

M R FengPfizer global Research and Development Ann Arbor laboratory, Ann Arbor, MI, USA.
D Turluck
J Burleigh
R Lister
C Fan
A Middlebrook
C Taylor
T Su
Pfizer (United States) · USUnion Institute & University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pregabalin [PGB, (S)-3-isobutyl GABA, CI-1008] is a derivative of the inhibitory neurotransmitter g-aminobutyric acid (GABA). It has shown anticonvulsant, analgesia and anxiety activity in animal models. In this report, blood-brain barrier (BBB) influx and efflux of PGB were investigated with microdialysis at efficacious doses in rats. BBB influx (CLin) and efflux (CLout) permeability for pregabalin were 4.8 and 37.2 microL/min/g brain, respectively, following an intravenous infusion to rats. The results indicate that PGB is brain penetrable, supporting its anti-epilepsy and other CNS pharmacology. Significant anticonvulsant action of PGB was detected between 2 and 8 hr post oral dose, which is lag behind ECF drug concentrations lees. A PK/PD link model was used to describe the counter-clockwise hysteresis relationship between pregabalin brain ECF concentration and the anticonvulsant effect in rats. The resulting Ce (concentration in effect compartment) versus effect profile exhibits a sigmoidal curve and the calculated ECe50 and Keo values were 95.3 ng/mL and 0.0092 min-1, respectively. The small Keo value suggests that the effect is not directly proportional to the amount of pregabalin in the ECF compartment possibly due to inherent delay.

Indexed as

AminesCyclohexanecarboxylic AcidsAcetatesAnimalsAnticonvulsantsBlood-Brain BarrierBrainElectroshockGABA AntagonistsGabapentingamma-Aminobutyric AcidIndicators and ReagentsInfusions, IntravenousMicrodialysisModels, BiologicalPregabalinAcetatesAminesAnticonvulsantsCyclohexanecarboxylic AcidsGABA AntagonistsGabapentingamma-Aminobutyric AcidIndicators and ReagentsPregabalin

Identifiers

PMID11554426
OpenAlexW2081785210

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.