Evidence map›Paper›PMID 31477151›Full record

ArticleBiology of sex differences2019

An inherent T cell deficit in healthy males to C. neoformans infection may begin to explain the sex susceptibility in incidence of cryptococcosis.

Tiffany E Guess, Joseph Rosen, Natalia Castro-Lopez, Floyd L Wormley, Erin E McClelland

Open access · goldAbstract read
In one paragraph

Article in Biology of sex differences, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.3field-weighted citation impact, top 20% 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

15 citing papers in PubMed, 19 citations in OpenAlex.

  1. iScience · 2026
    Article
  2. Review
  3. Review
  4. Microorganisms · 2025
    Article
  5. Article
  6. A New Overview of Sex Bias in Fungal Infections.Journal of fungi (Basel, Switzerland) · 2024
    Review
  7. The conneXion between sex and immune responses.Nature reviews. Immunology · 2024
    Review
  8. Review
  9. Review
  10. Adaptive immunology ofFrontiers in immunology · 2023
    Review
  11. Associations betweenJournal of fungi (Basel, Switzerland) · 2021
    Review
  12. Review
  13. Review
  14. Article
  15. COVID-19 associated with cryptococcosis: a scoping review.Therapeutic advances in infectious disease
    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

5 authors at 2 institutions in 1 country.

Tiffany E GuessDepartment of Biology, Middle Tennessee State University, Murfreesboro, TN, USA.
Joseph RosenDepartment of Biology, Middle Tennessee State University, Murfreesboro, TN, USA.
Natalia Castro-LopezDepartment of Biology, The University of Texas at San Antonio, San Antonio, TX, USA.
Floyd L WormleyDepartment of Biology, The University of Texas at San Antonio, San Antonio, TX, USA.
Erin E McClellandDepartment of Biology, Middle Tennessee State University, Murfreesboro, TN, USA. erinmcclelland91@gmail.com.ORCID 0000-0001-7781-3542
Middle Tennessee State University · USTexas Center for Infectious Disease · US

Funding

Protective Host Immunity Against Pulmonary CryptococcosisR01AI071752 · NIAID · UNIVERSITY OF TEXAS SAN ANTONIO · PI WORMLEY, FLOYD L. · 2007 to 2018
$3.7M
NIAID NIH HHS R01 AI071752
6 · The paper itself

Abstract

backgroundCryptococcus neoformans, the causative agent of cryptococcosis, causes ~ 181,000 deaths annually, with males having a higher incidence of disease than females (7M:3F). The reason for this sex bias remains unclear. We hypothesized that this disparity was due to biological differences between the male and female immune response.

methodsPeripheral blood mononuclear cells (PBMCs) from healthy donors were isolated and infected with C. neoformans ± exogenous testosterone or 17-β-estradiol. C. neoformans, B, T, and NK cell proliferation was quantified by flow cytometry. Cytokine analysis was conducted via protein array or ELISA. Serological testing was conducted to determine previous exposure to C. neoformans.

resultsC. neoformans proliferated more in male PBMCs. T cell percentages in both sexes were lower in infected versus uninfected cells. Male PBMCs had lower CD3

conclusionsThese results suggest that males show an inherent deficit in T cell response during infection, which may contribute to the increased incidence of disease in males.

Indexed as

Cryptococcus neoformansAdolescentCell ProliferationCells, CulturedCryptococcosisCytokinesFemaleHumansInterleukin-2 Receptor alpha SubunitLeukocytes, MononuclearLymphocyte CountLymphocyte SubsetsMaleSex CharacteristicsCytokinesIL2RA protein, humanInterleukin-2 Receptor alpha SubunitB cellsCryptococcosisCryptococcus neoformansEstrogenImmune responseNatural killer cellsSex bias in infectionT cellsTestosterone

Identifiers

PMID31477151
PMCPMC6720413
OpenAlexW2971377313

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.