Evidence map›Paper›PMID 21998162›Full record

ArticleMicrobiology (Reading, England)2012

Blood-brain barrier invasion by Cryptococcus neoformans is enhanced by functional interactions with plasmin.

Jamal Stie, Deborah Fox

Open access · greenAbstract read
In one paragraph

Article in Microbiology (Reading, England), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
3.4field-weighted citation impact, top 8% 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

37 citing papers in PubMed, 53 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Mechanisms and Virulence Factors ofJournal of fungi (Basel, Switzerland) · 2024
    Review
  5. Review
  6. Journal of fungi (Basel, Switzerland) · 2022
    Review
  7. Mechanisms of fungal dissemination.Cellular and molecular life sciences : CMLS · 2021
    Review
  8. Fibrinolysis: A Primordial System Linked to the Immune Response.International journal of molecular sciences · 2021
    Review
  9. PreventingEmerging microbes & infections · 2020
    Article
  10. A critical role for plasminogen in inflammation.The Journal of experimental medicine · 2020
    Review
  11. Toxoflavin Produced byApplied and environmental microbiology · 2019
    Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

2 authors at 1 institution in 1 country.

Jamal StieResearch Institute for Children, Louisiana State University Health Sciences Center, New Orleans, LA 70118, USA.
Deborah FoxDepartment of Pediatrics, Louisiana State University Health Sciences Center, New Orleans, LA 70118, USA.
Louisiana State University Health Sciences Center New Orleans · US

Funding

Cell wall biogenesis in Cryptococcus neoformansK22AI055302 · NIAID · LOUISIANA STATE UNIV HSC NEW ORLEANS · PI FOX, DEBORAH S. · 2003 to 2004
$270k
NIAID NIH HHS AI055302NIAID NIH HHS K22 AI055302
6 · The paper itself

Abstract

Cryptococcus neoformans can invade the central nervous system through diverse mechanisms. We examined a possible role for host plasma proteases in the neurotropic behaviour of this blood-borne fungal pathogen. Plasminogen is a plasma-enriched zymogen that can passively coat the surface of blood-borne pathogens and, upon conversion to the serine protease plasmin, facilitate pathogen dissemination by degrading vascular barriers. In this study, plasminogen-to-plasmin conversion on killed and viable hypoencapsulated strains of C. neoformans required the addition of plasminogen activator (PA), but this conversion occurred in the absence of supplemented PA when viable strains were cultured with brain microvascular endothelial cells (BMEC). Plasmin-coated C. neoformans showed an enhanced invasive ability in Matrigel invasion assays that was significantly augmented in the presence of BMEC. The invasive effect of plasmin required viable pathogen and correlated with rapid declines in BMEC barrier function. Plasmin-enhanced invasion was inhibited by aprotinin, carboxypeptidase B, the lysine analogue epsilon-aminocaproic acid, and by capsule development. C. neoformans caused plasminogen-independent declines in BMEC barrier function that were associated with pathogen-induced host damage; however, such declines were significantly delayed and less extensive than those observed with plasmin-coated pathogen. BMEC adhesion and damage by hypoencapsulated C. neoformans were diminished by capsule induction but unaltered by plasminogen and/or PA. We conclude that hypoencapsulated C. neoformans can invade BMEC by a plasmin-dependent mechanism, in vitro, and that small, or minimal, surface capsule expression during the blood-borne phase of cryptococcosis may promote virulence by means of plasmin(ogen) acquisition.

Indexed as

AnimalsBacterial AdhesionBlood-Brain BarrierCattleCells, CulturedCryptococcosisCryptococcus neoformansEndothelial CellsFibrinolysinHumansPlasminogenProtein BindingVirulenceFibrinolysinPlasminogen

Identifiers

PMID21998162
PMCPMC3352358
OpenAlexW2094284346

What OpenQuestion holds

Textmetadata
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.