Evidence map›Paper›PMID 29857350›Full record

ArticleRapid communications in mass spectrometry : RCM2018

Peptidomic analysis of endogenous plasma peptides from patients with pancreatic neuroendocrine tumours.

Richard G Kay, Benjamin G Challis, Ruth T Casey, Geoffrey P Roberts, Claire L Meek, Frank Reimann, Fiona M Gribble

Abstract read
In one paragraph

Article in Rapid communications in mass spectrometry : RCM, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
–field-weighted citation impact
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

25 citing papers in PubMed.

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  20. Glucagon Receptor Signaling and Glucagon Resistance.International journal of molecular sciences · 2019
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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

7 authors.

Richard G KayInstitute of Metabolic Science, Metabolic Research Laboratories, Addenbrooke's Hospital, Hills Road, Cambridge, CB2 0QQ, UK.ORCID http://orcid.org/0000-0002-3827-8687
Benjamin G ChallisInstitute of Metabolic Science, Wolfson Diabetes and Endocrine Centre, Addenbrooke's Hospital, Cambridge, UK.ORCID http://orcid.org/0000-0002-1130-2851
Ruth T CaseyInstitute of Metabolic Science, Wolfson Diabetes and Endocrine Centre, Addenbrooke's Hospital, Cambridge, UK.ORCID http://orcid.org/0000-0003-4058-3135
Geoffrey P RobertsInstitute of Metabolic Science, Metabolic Research Laboratories, Addenbrooke's Hospital, Hills Road, Cambridge, CB2 0QQ, UK.ORCID http://orcid.org/0000-0001-9554-8404
Claire L MeekInstitute of Metabolic Science, Metabolic Research Laboratories, Addenbrooke's Hospital, Hills Road, Cambridge, CB2 0QQ, UK.ORCID http://orcid.org/0000-0002-4176-8329
Frank ReimannInstitute of Metabolic Science, Metabolic Research Laboratories, Addenbrooke's Hospital, Hills Road, Cambridge, CB2 0QQ, UK.ORCID http://orcid.org/0000-0001-9399-6377
Fiona M GribbleInstitute of Metabolic Science, Metabolic Research Laboratories, Addenbrooke's Hospital, Hills Road, Cambridge, CB2 0QQ, UK.ORCID http://orcid.org/0000-0002-4232-2898

Funding

Medical Research Council MC_UU_00014/3Medical Research Council MC_UU_00014/5Medical Research Council MC_UU_12012/1Medical Research Council MC_UU_12012/3Medical Research Council MC_UU_12012/5Medical Research Council MR/M009041/1Medical Research Council MR/M024873/1Wellcome Trust
6 · The paper itself

Abstract

rationaleDiagnosis of pancreatic neuroendocrine tumours requires the study of patient plasma with multiple immunoassays, using multiple aliquots of plasma. The application of mass spectrometry based techniques could reduce the cost and amount of plasma required for diagnosis.

methodsPlasma samples from two patients with pancreatic neuroendocrine tumours were extracted using an established acetonitrile-based plasma peptide enrichment strategy. The circulating peptidome was characterised using nano and high flow rate liquid chromatography/mass spectrometry (LC/MS) analyses. To assess the diagnostic potential of the analytical approach, a large sample batch (68 plasmas) from control subjects, and aliquots from subjects harbouring two different types of pancreatic neuroendocrine tumour (insulinoma and glucagonoma), were analysed using a 10-min LC/MS peptide screen.

resultsThe untargeted plasma peptidomics approach identified peptides derived from the glucagon prohormone, chromogranin A, chromogranin B and other peptide hormones and proteins related to control of peptide secretion. The glucagon prohormone derived peptides that were detected were compared against putative peptides that were identified using multiple antibody pairs against glucagon peptides. Comparison of the plasma samples for relative levels of selected peptides showed clear separation between the glucagonoma and the insulinoma and control samples.

conclusionsThe combination of the organic solvent extraction methodology with high flow rate analysis could potentially be used to aid diagnosis and monitor treatment of patients with functioning pancreatic neuroendocrine tumours. However, significant validation will be required before this approach can be clinically applied.

Indexed as

AdultChromograninsFemaleHumansMaleMiddle AgedNanotechnologyNeuroendocrine TumorsPancreatic NeoplasmsPeptide HormonesProteomicsYoung AdultChromograninsPeptide Hormones

Identifiers

PMID29857350
PMCPMC6099210

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Registered trials

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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.