Evidence map›Paper›PMID 17664261›Full record

ArticleInfection and immunity2007

Depletion of alveolar macrophages decreases the dissemination of a glucosylceramide-deficient mutant of Cryptococcus neoformans in immunodeficient mice.

Talar B Kechichian, John Shea, Maurizio Del Poeta

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 86 papers.

0numbers the graph read from it
0cells of the map it votes in
86citing papers in PubMed
4.1field-weighted citation impact, top 6% 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

86 citing papers in PubMed, 128 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Mechanisms and Virulence Factors ofJournal of fungi (Basel, Switzerland) · 2024
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Sterylglucosides in Fungi.Journal of fungi (Basel, Switzerland) · 2022
    Review
  12. Journal of fungi (Basel, Switzerland) · 2022
    Review
  13. Article
  14. Review
  15. Article
  16. Mechanisms of fungal dissemination.Cellular and molecular life sciences : CMLS · 2021
    Review
  17. Article
  18. Nutritional Conditions ModulateMicroorganisms · 2020
    Article
  19. Dangerous Liaisons: Interactions ofPathogens (Basel, Switzerland) · 2020
    Review
  20. Article

26 more citing papers are in PubMed but not listed here.

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

3 authors at 1 institution in 2 countries.

Talar B KechichianDepartment of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC 29425, USA.
John Shea
Maurizio Del Poeta
Bipar · FR

Funding

THE ROLE OF LACTOSYLCERAMIDE IN RENAL AGING AND DISEASEP20RR017677 · NCRR · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI CROSSON, CRAIG E. · 2002 to 2011
$23.4M
TRAINING PROGRAM FOR MEDICAL SCIENTISTST32GM008716 · NIGMS · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI DEMORE, NANCY · 1999 to 2024
$9.3M
Sphingolipid-mediated fungal pathogenesisR01AI056168 · NIAID · STATE UNIVERSITY NEW YORK STONY BROOK · PI DEL POETA, MAURIZIO · 2004 to 2013
$2.7M
MUSC FACIL EXPANSION &RENOV: SLE C06RR015455 · NCRR · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI RAYMOND, JOHN R · 2002 to 2002
$2.0M
NCRR NIH HHS C06 RR015455NCRR NIH HHS P20 RR017677NCRR NIH HHS RR17677NIAID NIH HHS AI56168NIAID NIH HHS R01 AI056168NIGMS NIH HHS GM08716NIGMS NIH HHS T32 GM008716
6 · The paper itself

Abstract

In previous studies we showed that a Cryptococcus neoformans mutant lacking glucosylceramide (Deltagcs1) is avirulent and unable to reach the brain when it is administered intranasally into an immunocompetent mouse and is contained in a lung granuloma. To determine whether granuloma formation is key for containment of C. neoformans Deltagcs1, we studied the role of C. neoformans glucosylceramide in a T- and NK-cell-immunodeficient mouse model (Tgepsilon26) in which alveolar macrophages (AMs) are not activated and granuloma formation is not expected. The results show that Tgepsilon26 mice infected with Deltagcs1 do not produce a lung granuloma and that the Deltagcs1 mutant proliferates in the lungs and does disseminate to the brain, although its virulence phenotype is dramatically reduced. Since Deltagcs1 can grow only in acidic niches, such as the phagolysosome of AMs, and not in neutral or alkaline environments, such as the extracellular spaces, we hypothesize that in immunodeficient mice Deltagcs1 proliferates inside AMs. Indeed, we found that depletion of AMs significantly improved Tgepsilon26 mouse survival and decreased the dissemination of Deltagcs1 cells to the central nervous system. Thus, these results suggest that the growth of Deltagcs1 in immunodeficient mice is maintained within AMs. This study highlights the hypothesis that AMs may exacerbate C. neoformans infection in conditions in which there is severe host immunodeficiency.

Indexed as

AnimalsBrainColony Count, MicrobialCryptococcosisCryptococcus neoformansGlucosylceramidesGranulomaImmunocompromised HostKidneyLungMacrophages, AlveolarMiceMice, Mutant StrainsMice, TransgenicSpleenSurvival AnalysisGlucosylceramidesVirulence Factors

Identifiers

PMID17664261
PMCPMC2044542
OpenAlexW2099723019

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.