Evidence map›Paper›PMID 23468415›Full record

ReviewJournal of pharmacokinetics and pharmacodynamics2013

Cerebral microdialysis in clinical studies of drugs: pharmacokinetic applications.

Richard J Shannon, Keri L H Carpenter, Mathew R Guilfoyle, Adel Helmy, Peter J Hutchinson

Open access · hybridAbstract readReview
In one paragraph

Review in Journal of pharmacokinetics and pharmacodynamics, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 1 pooled it
5.5field-weighted citation impact, top 5% 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, 1 synthesis or guideline pooled it, 74 citations in OpenAlex.

  1. Pooled it
  2. Trial
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  5. Recombinant human interleukin-1 receptor antagonist in severe traumatic brain injury: a phase II randomized control trial.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2014
    Trial
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  11. A predictive microfluidic model of human glioblastoma to assess trafficking of blood-brain barrier-penetrant nanoparticles.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
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  18. Current Status and Recommendations in Multimodal Neuromonitoring.Indian journal of critical care medicine : peer-reviewed, official publication of Indian Society of Critical Care Medicine · 2020
    Article
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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

5 authors at 2 institutions in 1 country.

Richard J ShannonDivision of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Box 167, Addenbrooke's Hospital, Cambridge, CB2 0QQ, UK. rjs232@cam.ac.uk
Keri L H Carpenter
Mathew R Guilfoyle
Adel Helmy
Peter J Hutchinson
Addenbrooke's Hospital · GBUniversity of Cambridge · GB

Funding

Medical Research Council G0600986Medical Research Council G0600986 ID 79068Medical Research Council G0802251Medical Research Council G1002277Medical Research Council G9439390Medical Research Council G9439390 ID 65883
6 · The paper itself

Abstract

The ability to deliver drug molecules effectively across the blood-brain barrier into the brain is important in the development of central nervous system (CNS) therapies. Cerebral microdialysis is the only existing technique for sampling molecules from the brain extracellular fluid (ECF; also termed interstitial fluid), the compartment to which the astrocytes and neurones are directly exposed. Plasma levels of drugs are often poor predictors of CNS activity. While cerebrospinal fluid (CSF) levels of drugs are often used as evidence of delivery of drug to brain, the CSF is a different compartment to the ECF. The continuous nature of microdialysis sampling of the ECF is ideal for pharmacokinetic (PK) studies, and can give valuable PK information of variations with time in drug concentrations of brain ECF versus plasma. The microdialysis technique needs careful calibration for relative recovery (extraction efficiency) of the drug if absolute quantification is required. Besides the drug, other molecules can be analysed in the microdialysates for information on downstream targets and/or energy metabolism in the brain. Cerebral microdialysis is an invasive technique, so is only useable in patients requiring neurocritical care, neurosurgery or brain biopsy. Application of results to wider patient populations, and to those with different pathologies or degrees of pathology, obviously demands caution. Nevertheless, microdialysis data can provide valuable guidelines for designing CNS therapies, and play an important role in small phase II clinical trials. In this review, we focus on the role of cerebral microdialysis in recent clinical studies of antimicrobial agents, drugs for tumour therapy, neuroprotective agents and anticonvulsants.

Indexed as

MicrodialysisAnimalsAnti-Bacterial AgentsAntineoplastic AgentsBlood-Brain BarrierCentral Nervous System AgentsCerebral CortexClinical Trials as TopicDrug DiscoveryEquipment DesignHumansMetabolic Clearance RateAnti-Bacterial AgentsAntineoplastic AgentsCentral Nervous System Agents

Identifiers

PMID23468415
PMCPMC3663257
OpenAlexW2035492426

What OpenQuestion holds

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LicenceCC BY
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.