Evidence map›Paper›PMID 21179892›Full record

Trial reportProteomics. Clinical applications2010

Hemoglobin depletion from plasma: considerations for proteomic discovery in sickle cell disease and other hemolytic processes.

Lisa M Williams, Zongming Fu, Pratima Dulloor, Timothy Yen, Emily Barron-Casella, William Savage, Jennifer E Van Eyk, James F Casella, Allen Everett

Open access · greenAbstract readClinical Trial
In one paragraph

Trial report in Proteomics. Clinical applications, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.4field-weighted citation impact, top 36% 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

4 citing papers in PubMed, 16 citations in OpenAlex.

  1. Article
  2. Article
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  4. 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

9 authors at 3 institutions in 1 country.

Lisa M WilliamsDepartment Pediatrics, Division of Pediatric Hematology, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
Zongming Fu
Pratima Dulloor
Timothy Yen
Emily Barron-Casella
William Savage
Jennifer E Van Eyk
James F Casella
Allen Everett
Johns Hopkins University · USJohns Hopkins Bayview Medical Center · USJohns Hopkins Medicine · US

Funding

Institute for Clinical and Translational Research (UL1)UL1RR025005 · NCRR · JOHNS HOPKINS UNIVERSITY · PI FORD, DANIEL ERNEST · 2007 to 2011
$75.8M
Institute for Clinical and Translational ResearchUL1TR001079 · NCATS · JOHNS HOPKINS UNIVERSITY · PI FORD, DANIEL ERNEST · 2013 to 2017
$60.1M
Sickle cell scholar componentU54HL090515 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI CASELLA, JAMES F · 2008 to 2011
$3.8M
Clinical Hematology Research Development Program (K12) at Johns HopkinsK12HL087169 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI CASELLA, JAMES F · 2006 to 2016
$3.7M
Longitudinal SIT Trial Plasma Proteomic Biomarker Discovery and Validation in SCIR01HL091759 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI CASELLA, JAMES F · 2008 to 2011
$1.6M
NCATS NIH HHS UL1 TR001079NCRR NIH HHS U54RR023561NCRR NIH HHS UL1 RR025005NHLBI NIH HHS 5R01HL091759NHLBI NIH HHS K12 HL087169NHLBI NIH HHS R01 HL091759NHLBI NIH HHS U54 HL090515NHLBI NIH HHS U54HL090515
6 · The paper itself

Abstract

purposeHemoglobin (Hb) depletion with nickel affinity chromatography has been shown to increase the number of proteins identified in proteomic studies of erythrocytes, but limited data exist on the application of this technique in depletion of Hb from plasma or serum required for clinical biomarker studies. The aim of this study was to explore the potential of using nickel-beads for Hb depletion of plasma. EXPERIMENTAL

designNickel–nitrilotriacetic acid (Ni–NTA) affinity chromatography was used to deplete Hb from hemolyzed plasma samples obtained from children with sickle cell disease (SCD, n=7) and normal human plasma (n=4). Ni–NTA-bound proteins were analyzed by one-dimensional GE, followed by in-gel digestion for characterization using an LTQ-Orbitrap hybrid mass spectrometer. In addition, the loss of two non-Hb-related plasma proteins, thrombospondin1 and L-selectin, by Ni–NTA was determined by ELISA (SCD n=6, non-SCD controls n=2).

resultsNi–NTA resulted in an average 60% decrease in plasma protein concentration, which was not hemolysis dependent. Specifically, Hb (7 peptides) and the top three proteins, -2-macroglobulin (75 peptides), apolipoprotein B-100 (73 peptides), and albumin (42 peptides) were Ni–NTA bound. In addition, using an ELISA assay two non-Hb-associated plasma proteins thrombospondin1 and L-selectin were decreased by Ni-NTA. CONCLUSIONS AND CLINICAL RELEVANCE: Hb depletion with Ni–NTA is effective for Hb removal but is not specific. There is a potential for deleterious depletion of potential biomarkers that may limit the applicability of this method. Consideration of alternate methods of Hb depletion for clinical proteomics may be warranted.

Indexed as

AdolescentAnemia, Sickle CellBlood ProteinsChildChild, PreschoolChromatography, AffinityHemoglobinsHemolysisHumansNitrilotriacetic AcidOrganometallic CompoundsPlasmaProteomicsBlood ProteinsHemoglobinsnickel nitrilotriacetic acidNitrilotriacetic AcidOrganometallic Compounds

Identifiers

PMID21179892
PMCPMC4364410
OpenAlexW1983098266

What OpenQuestion holds

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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.