Evidence map›Paper›PMID 31672401›Full record

ArticleJournal of pharmaceutical sciences2020

Subvisible Particles in IVIg Formulations Activate Complement in Human Serum.

Carly F Chisholm, William Behnke, Yekaterina Pokhilchuk, Ashley A Frazer-Abel, Theodore W Randolph

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Journal of pharmaceutical sciences, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.4field-weighted citation impact, top 37% 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

7 citing papers in PubMed, 15 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

5 authors at 1 institution in 1 country.

Carly F ChisholmDepartment Chemical and Biological Engineering, Center for Pharmaceutical Biotechnology, University of Colorado, Boulder, Colorado 80309.
William BehnkeDepartment Chemical and Biological Engineering, Center for Pharmaceutical Biotechnology, University of Colorado, Boulder, Colorado 80309.
Yekaterina PokhilchukDepartment Chemical and Biological Engineering, Center for Pharmaceutical Biotechnology, University of Colorado, Boulder, Colorado 80309.
Ashley A Frazer-AbelExsera Biolabs, Anschutz Medical Campus, Aurora, Colorado 80045.
Theodore W RandolphDepartment Chemical and Biological Engineering, Center for Pharmaceutical Biotechnology, University of Colorado, Boulder, Colorado 80309. Electronic address: theodore.randolph@colorado.edu.
University of Colorado Boulder · US

Funding

Biotechnology Research Partnerships Renewal: Aggregation of Therapeutic ProteinsR01EB006006 · NIBIB · UNIVERSITY OF COLORADO · PI RANDOLPH, THEODORE W · 2006 to 2017
$7.2M
NIBIB NIH HHS R01 EB006006
6 · The paper itself

Abstract

When administered intravenously, various particles and nanomedicines activate complement, potentially leading to infusion reactions and other adverse drug reactions. Particles form within formulations of therapeutic proteins due to stresses incurred during shipping, handling, and administration to patients. In this study, IVIg solutions were stored in multiple types of vials and prefilled syringes and exposed to agitation and freeze-thaw stresses to generate particles. The stressed samples were added to human serum to determine whether these particles activated complement. Subvisible IVIg particles ranging in size between 2 and 10 microns activated complement in a fashion that was linearly dependent on the number of particles dosed, whereas little correlation was found between doses of larger particles (>10 microns) and complement activation. Activation of complement by subvisible particles of IVIg followed the alternative pathway, as shown by the release of complement cascade factor Bb and the production of the anaphylatoxins C3a and C5a without generation of C4a. The number and the morphology of subvisible particles formed depended on the applied stress, formulation, and on the container material. But the capacity of the 2- to 10-micron-sized particles to activate complement in human serum appeared to depend only on particle concentration.

Indexed as

Complement ActivationComplement C3Complement C5aComplement Factor BComplement System ProteinsDrug CompoundingDrug PackagingFreezingHumansImmunoglobulins, IntravenousParticle SizeProtein AggregatesStress, MechanicalSyringesC3 protein, humanComplement C3Complement C5aComplement Factor BComplement System ProteinsImmunoglobulins, IntravenousProtein AggregatesIgG antibody(s)immune response(s)nanoparticle(s)particle sizeprotein aggregationstability

Identifiers

PMID31672401
PMCPMC6948146
OpenAlexW2982493799

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.