Evidence map›Paper›PMID 30107117›Full record

ArticleAnalytical chemistry2018

In Vivo Chemical Monitoring at High Spatiotemporal Resolution Using Microfabricated Sampling Probes and Droplet-Based Microfluidics Coupled to Mass Spectrometry.

Thitaphat Ngernsutivorakul, Daniel J Steyer, Alec C Valenta, Robert T Kennedy

Abstract read
In one paragraph

Article in Analytical chemistry, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
4.2field-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

33 citing papers in PubMed, 85 citations in OpenAlex.

  1. An opto-microperfusion neural probe for multiplexed detection of optogenetically evoked neurochemical release dynamics.Proceedings of the National Academy of Sciences of the United States of America · 2026
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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

4 authors at 1 institution in 1 country.

Thitaphat NgernsutivorakulDepartment of Chemistry , University of Michigan , 930 N. University Avenue , Ann Arbor , Michigan 48109 , United States.
Daniel J SteyerDepartment of Chemistry , University of Michigan , 930 N. University Avenue , Ann Arbor , Michigan 48109 , United States.
Alec C ValentaDepartment of Chemistry , University of Michigan , 930 N. University Avenue , Ann Arbor , Michigan 48109 , United States.
Robert T KennedyDepartment of Chemistry , University of Michigan , 930 N. University Avenue , Ann Arbor , Michigan 48109 , United States.ORCID 0000-0003-2447-7471
University of Michigan · US

Funding

In vivo chemical monitoring using capillary separationsR37EB003320 · NIBIB · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI KENNEDY, ROBERT T · 2008 to 2017
$3.6M
In vivo chemical monitoring using capillary separationsR01EB003320 · NIBIB · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI KENNEDY, ROBERT T · 2003 to 2020
$2.7M
NIBIB NIH HHS R01 EB003320NIBIB NIH HHS R37 EB003320
6 · The paper itself

Abstract

An essential approach for in vivo chemical monitoring is to use sampling probes coupled with analytical methods; however, this method traditionally has limited spatial and temporal resolution. To address this problem, we developed an analytical system that combines microfabricated push-pull sampling probes with droplet-based microfluidics. The microfabricated probe provides spatial resolution approximately 1000-fold better than that of common microdialysis probes. Microfabrication also facilitated integration of an extra channel into the probe for microinjection. We created microfluidic devices and interfaces that allowed manipulation of nanoliter droplet samples collected from the microfabricated probe at intervals of a few seconds. Use of droplet-based microfluidics prevented broadening of collected zones, yielding 6 s temporal resolution at 100 nL/min perfusion rates. Resulting droplets were analyzed by direct infusion nanoelectrospray ionization (nESI) mass spectrometry for simultaneous determination of glutamine, glutamate, γ-aminobutyric acid, and acetylcholine. Use of low infusion rates that enabled nESI (50 nL/min) was critical to allowing detection in the complex samples. Addition of

Indexed as

Brain ChemistryAnimalsEquipment DesignMaleMicrofluidic Analytical TechniquesMicrotechnologyNeurotransmitter AgentsRats, Sprague-DawleySpectrometry, Mass, Electrospray IonizationNeurotransmitter Agents

Identifiers

PMID30107117
PMCPMC6939306
OpenAlexW2886103592

What OpenQuestion holds

Textmetadata
LicenceTDM
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.