Evidence map›Paper›PMID 30222961›Full record

Trial reportJournal of immunological methods2018

Effect of delayed cell processing and cryopreservation on immunophenotyping in multicenter population studies.

Bharat Thyagarajan, Helene Barcelo, Eileen Crimmins, David Weir, Sharon Minnerath, Sithara Vivek, Jessica Faul

Abstract readClinical TrialComparative StudyMulticenter Study
In one paragraph

Trial report in Journal of immunological methods, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
1.1field-weighted citation impact, top 24% 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

38 citing papers in PubMed, 49 citations in OpenAlex.

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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 at 3 institutions in 1 country.

Bharat ThyagarajanDepartment of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, United States. Electronic address: thya0003@umn.edu.
Helene BarceloDepartment of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, United States.
Eileen CrimminsDavis School of Gerontology, University of Southern California Davis, Los Angeles, CA, United States.
David WeirInstitute for Social Research, Survey Research Center, University of Michigan, Ann Arbor, MI, United States.
Sharon MinnerathDepartment of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, United States.
Sithara VivekDepartment of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, United States.
Jessica FaulInstitute for Social Research, Survey Research Center, University of Michigan, Ann Arbor, MI, United States.
University of Minnesota · USUniversity of Michigan · USUniversity of Southern California · US

Funding

HRS Yrs29-34: Y33 SSA CoFundingU01AG009740 · NIA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI Jessica Faul, KENNETH M LANGA · 1990 to 2026
$555.8M
USC/UCLA Center on Biodemography &Population HealthP30AG017265 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI JENNIFER A AILSHIRE · 1999 to 2026
$17.9M
Biological Underpinnings of Socioeconomic Differentials in Health and MortalityR01AG060110 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI CRIMMINS, EILEEN M · 2018 to 2022
$2.6M
Network on Measurement of Biological RiskR24AG037898 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI CRIMMINS, EILEEN M, SEEMAN, TERESA E · 2010 to 2014
$1.1M
NIA NIH HHS P30 AG017265NIA NIH HHS R01 AG060110NIA NIH HHS R24 AG037898NIA NIH HHS U01 AG009740
6 · The paper itself

Abstract

Variability induced by delayed cell processing and cell cryopreservation presents unique challenges for immunophenotyping in large population studies. We conducted a pilot study to evaluate the effect of delayed cell processing and cryopreservation on cell percentages obtained by immunophenotyping. We collected blood from 20 volunteers and compared the effect of (a) delayed cell processing up to 72 h (b) cryopreservation and (c) the combined effect of delayed cell processing and cryopreservation on immunophenotyping of 31 cell subsets that included several subsets of T, B, Natural Killer (NK) cells, monocytes and dendritic cells using both whole blood collected in EDTA tubes and peripheral blood mononuclear cells collected in CPT tubes. We found the delayed cell processing up to 72 h or cryopreservation alone did not significantly affect the percentages T cells, dendritic cells or monocytes but significantly increased the percentage of B cells and NK cells (p for trend ≤0.01) but. However combination of delayed cell processing up to 72 h and cryopreservation significantly increased the percentage of T cells as compared to cells processed immediately (p for trend <0.0001) while a delayed cell processing followed by cryopreservation decreased the percentage of NK cells (p for trend <0.0001). Total B-cells increased significantly with a 24-48 h delay in cell processing and cryopreservation but not at 72 h. The percentages of monocytes and dendritic cells remained unaffected by the combination of delayed cell processing and cryopreservation. These findings suggest that immunophenotyping of several immune cell subsets can be successfully implemented in large population studies as long as blood is processed within 48 h of biospecimen collection though some cell subsets may be more susceptible to a combination of delayed cell processing and cryopreservation.

Indexed as

Cell SeparationCryopreservationImmunophenotypingAdultAgedAged, 80 and overFemaleHumansLeukocytesMaleMiddle AgedTime FactorsCell processingCohort studyCryopreservationImmunophenotyping

Identifiers

PMID30222961
PMCPMC6423980
OpenAlexW2890664520

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.