Evidence map›Paper›PMID 30882931›Full record

ArticleGlia2019

Knockdown of circulating C1 inhibitor induces neurovascular impairment, glial cell activation, neuroinflammation, and behavioral deficits.

Dorit Farfara, Emily Feierman, Allison Richards, Alexey S Revenko, Robert A MacLeod, Erin H Norris, Sidney Strickland

Open access · greenAbstract read
In one paragraph

Article in Glia, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
2.3field-weighted citation impact, top 12% 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

20 citing papers in PubMed, 33 citations in OpenAlex.

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  2. Effect ofBiomedicines · 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

7 authors at 2 institutions in 1 country.

Dorit FarfaraPatricia and John Rosenwald Laboratory of Neurobiology and Genetics, The Rockefeller University, New York, New York.ORCID 0000-0001-7515-5769
Emily FeiermanPatricia and John Rosenwald Laboratory of Neurobiology and Genetics, The Rockefeller University, New York, New York.
Allison RichardsPatricia and John Rosenwald Laboratory of Neurobiology and Genetics, The Rockefeller University, New York, New York.
Alexey S RevenkoDepartment of Antisense Drug Discovery, IONIS Pharmaceuticals Inc., Carlsbad, California.
Robert A MacLeodDepartment of Antisense Drug Discovery, IONIS Pharmaceuticals Inc., Carlsbad, California.
Erin H NorrisPatricia and John Rosenwald Laboratory of Neurobiology and Genetics, The Rockefeller University, New York, New York.
Sidney StricklandPatricia and John Rosenwald Laboratory of Neurobiology and Genetics, The Rockefeller University, New York, New York.
Rockefeller University · USIonis Pharmaceuticals (United States) · US

Funding

Role of Fibrinogen in Alzheimer's DiseaseR01NS106668 · NINDS · ROCKEFELLER UNIVERSITY · PI Erin H. Norris, SIDNEY STRICKLAND · 2018 to 2026
$5.8M
Role of the Contact System in Alzheimer's DiseaseR01NS102721 · NINDS · ROCKEFELLER UNIVERSITY · PI Erin H. Norris, SIDNEY STRICKLAND · 2018 to 2026
$5.3M
NINDS NIH HHS R01 NS102721NINDS NIH HHS R01 NS106668
6 · The paper itself

Abstract

The cross-talk between blood proteins, immune cells, and brain function involves complex mechanisms. Plasma protein C1 inhibitor (C1INH) is an inhibitor of vascular inflammation that is induced by activation of the kallikrein-kinin system (KKS) and the complement system. Knockout of C1INH was previously correlated with peripheral vascular permeability via the bradykinin pathway, yet there was no evidence of its correlation with blood-brain barrier (BBB) integrity and brain function. In order to understand the effect of plasma C1INH on brain pathology via the vascular system, we knocked down circulating C1INH in wild-type (WT) mice using an antisense oligonucleotide (ASO), without affecting C1INH expression in peripheral immune cells or the brain, and examined brain pathology. Long-term elimination of endogenous C1INH in the plasma induced the activation of the KKS and peritoneal macrophages but did not activate the complement system. Bradykinin pathway proteins were elevated in the periphery and the brain, resulting in hypotension. BBB permeability, extravasation of plasma proteins into the brain parenchyma, activation of glial cells, and elevation of pro-inflammatory response mediators were detected. Furthermore, infiltrating innate immune cells were observed entering the brain through the lateral ventricle walls and the neurovascular unit. Mice showed normal locomotion function, yet cognition was impaired and depressive-like behavior was evident. In conclusion, our results highlight the important role of regulated plasma C1INH as it acts as a gatekeeper to the brain via the neurovascular system. Thus, manipulation of C1INH in neurovascular disorders might be therapeutically beneficial.

Indexed as

AnimalsBlood-Brain BarrierBrainCapillary PermeabilityComplement C1 Inhibitor ProteinFemaleGene Knockdown TechniquesInflammationLocomotionMaleMiceMice, Inbred C3HMice, Inbred C57BLNeurogliaComplement C1 Inhibitor ProteinSerping1 protein, mousebradykininC1 inhibitorglianeuroinflammationneurovascular

Identifiers

PMID30882931
PMCPMC6551624
OpenAlexW2921175326

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.