Evidence map›Paper›PMID 36792633›Full record

ArticleNature communications2023

Reciprocal modulation of ammonia and melanin production has implications for cryptococcal virulence.

Rosanna P Baker, Arturo Casadevall

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
7.5field-weighted citation impact, top 2% 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

27 citing papers in PubMed, 35 citations in OpenAlex.

  1. Article
  2. Calcium triggersbioRxiv : the preprint server for biology · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Peroxisomes regulate virulence and cell density sensing inbioRxiv : the preprint server for biology · 2025
    Article
  10. Article
  11. Cryptococcal nutrient acquisition and pathogenesis: dining on the host.Microbiology and molecular biology reviews : MMBR · 2025
    Review
  12. Article
  13. Article
  14. Virulence factors released by extracellular vesicles fromFrontiers in cellular and infection microbiology · 2025
    Review
  15. Cell wall melanin impedes growth of theProceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  16. Article
  17. Mechanisms and Virulence Factors ofJournal of fungi (Basel, Switzerland) · 2024
    Review
  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.

Rosanna P BakerDepartment of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, 21205, USA.ORCID 0000-0002-9970-6278
Arturo CasadevallDepartment of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, 21205, USA. acasade1@jhu.edu.ORCID 0000-0002-9402-9167
Johns Hopkins University · US

Funding

Synergy of Host Defense Mechanisms in the LungR01HL059842 · NHLBI · YESHIVA UNIVERSITY · PI CASADEVALL, ARTURO · 1997 to 2023
$7.4M
The biology of Cryptococcus neoformans melanizationR01AI171093 · NIAID · JOHNS HOPKINS UNIVERSITY · PI Arturo Casadevall, JOSHUA D NOSANCHUK · 2023 to 2026
$3.2M
NHLBI NIH HHS R01 HL059842NIAID NIH HHS R01 AI171093
6 · The paper itself

Abstract

The fungus Cryptococcus neoformans is the causative agent of cryptococcosis, a disease that is uniformly lethal unless treated with antifungal drugs, yet current regimens are hindered by host toxicity and pathogen resistance. An attractive alternative approach to combat this deadly disease is the direct targeting of pathogen-derived virulence mechanisms. C. neoformans expresses multiple virulence factors that have been studied previously as isolated entities. Among these, are urease, which increases phagosomal pH and promotes brain invasion, and melanization, which protects against immune cells and antifungal treatments. Here we report a reciprocal interdependency between these two virulence factors. Cells hydrolyzing urea release ammonia gas which acts at a distance to raise pH and increase melanization rates for nearby cells, which in turn reduces secretion of urease-carrying extracellular vesicles. This reciprocal relationship manifests as an emergent property that may explain why targeting isolated virulence mechanisms for drug development has been difficult and argues for a more holistic approach that considers the virulence composite.

Indexed as

CryptococcosisCryptococcus neoformansAmmoniaAntifungal AgentsMelaninsUreaseVirulenceVirulence FactorsAmmoniaAntifungal AgentsMelaninsUreaseVirulence Factors

Identifiers

PMID36792633
PMCPMC9932161
OpenAlexW4321003562

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.