Evidence map›Paper›PMID 22083709›Full record

ArticleInfection and immunity2012

Disruption of the phospholipase D gene attenuates the virulence of Aspergillus fumigatus.

Xianping Li, Meihua Gao, Xuelin Han, Sha Tao, Dongyu Zheng, Ying Cheng, Rentao Yu, Gaige Han, Martina Schmidt, Li Han

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.6field-weighted citation impact, top 18% 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

21 citing papers in PubMed, 53 citations in OpenAlex.

  1. Phospholipases D: An Update on Structure-Function Relationships.Methods in molecular biology (Clifton, N.J.) · 2027
    Review
  2. Article
  3. Review
  4. Article
  5. Article
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  8. Fungi-A Component of the Oral Microbiome Involved in Periodontal Diseases.Advances in experimental medicine and biology · 2022
    Article
  9. Review
  10. Article
  11. EphA2-Dependent Internalization ofFrontiers in microbiology · 2020
    Article
  12. Review
  13. Article
  14. Article
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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

10 authors at 4 institutions in 2 countries.

Xianping LiDepartment of Immunology, Medical College of Qingdao University, Qingdao, China.
Meihua Gao
Xuelin Han
Sha Tao
Dongyu Zheng
Ying Cheng
Rentao Yu
Gaige Han
Martina Schmidt
Li Han
Academy of Military Medical Sciences · CNNational Institute for Communicable Disease Control and Prevention · CNQingdao University · CNUniversity of Groningen · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Aspergillus fumigatus is the most prevalent airborne fungal pathogen that induces serious infections in immunocompromised patients. Phospholipases are key enzymes in pathogenic fungi that cleave host phospholipids, resulting in membrane destabilization and host cell penetration. However, knowledge of the impact of phospholipases on A. fumigatus virulence is rather limited. In this study, disruption of the pld gene encoding phospholipase D (PLD), an important member of the phospholipase protein family in A. fumigatus, was confirmed to significantly decrease both intracellular and extracellular PLD activity of A. fumigatus. The pld gene disruption did not alter conidial morphological characteristics, germination, growth, and biofilm formation but significantly suppressed the internalization of A. fumigatus into A549 epithelial cells without affecting conidial adhesion to epithelial cells. Importantly, the suppressed internalization was fully rescued in the presence of 100 μM phosphatidic acid, the PLD product. Indeed, complementation of pld restored the PLD activity and internalization capacity of A. fumigatus. Phagocytosis of A. fumigatus conidia by J774 macrophages was not affected by the absence of the pld gene. Pretreatment of conidia with 1-butanol and a specific PLD inhibitor decreased the internalization of A. fumigatus into A549 epithelial cells but had no effect on phagocytosis by J774 macrophages. Finally, loss of the pld gene attenuated the virulence of A. fumigatus in mice immunosuppressed with hydrocortisone acetate but not with cyclophosphamide. These data suggest that PLD of A. fumigatus regulates its internalization into lung epithelial cells and may represent an important virulence factor for A. fumigatus infection.

Indexed as

Gene DeletionAnimalsAspergillus fumigatusBiofilmsCell AdhesionCell LineEpithelial CellsGenetic Complementation TestHumansMacrophagesMaleMiceMice, Inbred BALB CPhagocytosisPhospholipase DSpores, FungalPhospholipase DVirulence Factors

Identifiers

PMID22083709
PMCPMC3255654
OpenAlexW2103789602

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.