Evidence map›Paper›PMID 26829324›Full record

ArticlePloS one2016

Rhinitis, Ocular, Throat and Dermal Symptoms, Headache and Tiredness among Students in Schools from Johor Bahru, Malaysia: Associations with Fungal DNA and Mycotoxins in Classroom Dust.

Dan Norbäck, Jamal Hisham Hashim, Gui-Hong Cai, Zailina Hashim, Faridah Ali, Erica Bloom, Lennart Larsson

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
7.1field-weighted citation impact, top 3% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 103 citations in OpenAlex.

  1. Pooled it
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  10. First Characterization and Description ofJournal of fungi (Basel, Switzerland) · 2021
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  19. Mold and Human Health: a Reality Check.Clinical reviews in allergy & immunology · 2017
    Review
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

7 authors at 6 institutions in 2 countries.

Dan NorbäckDepartment of Medical Science, Occupational and Environmental Medicine, Uppsala University and University Hospital, Uppsala, Sweden.
Jamal Hisham HashimUnited Nations University-International Institute for Global Health, Kuala Lumpur, Malaysia.
Gui-Hong CaiDepartment of Medical Science, Occupational and Environmental Medicine, Uppsala University and University Hospital, Uppsala, Sweden.
Zailina HashimDepartment of Environmental and Occupational Health, Faculty of Medicine, and Health Science, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.
Faridah AliPrimary Care Unit, Johor State Health Department, Johor Bahru, Malaysia.
Erica BloomIVL Swedish Environmental Research Institute Ltd., Stockholm, Sweden.
Lennart LarssonDepartment of Laboratory Medicine, Division of Medical Microbiology, University of Lund, Lund, Sweden.
Uppsala University Hospital · SEIVL Swedish Environmental Research Institute · SELund University · SENewcastle University Medicine Malaysia · MYUnited Nations University-International Institute for Global Health · MYUniversiti Putra Malaysia · MY

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

There are few studies on rhinitis and sick building syndrome (SBS) among students in tropical countries. We studied associations between levels of five fungal DNA sequences, two mycotoxins (sterigmatocystin and verrucarol) and cat allergen (Fel d 1) levels in schools and rhinitis and other weekly SBS symptoms in the students. Fungal DNA was measured by quantitative PCR and cat allergen by ELISA. Pupils (N = 462) from eight randomly selected schools in Johor Bahru, Malaysia participated (96%). Dust samples were collected by cotton swabs and Petri dishes exposed for one week. None of the schools had a mechanical ventilation system, but all classrooms had openable windows that were kept open during lectures and indoor CO2 levels were low (mean 492 ppm; range 380-690 ppm). Weekly nasal symptoms (rhinitis) (18.8%), ocular (11.6%), throat (11.1%), dermal symptoms, headache (20.6%) and tiredness (22.1%) were common. Total fungal DNA in swab samples was associated with rhinitis (p = 0.02), ocular symptoms (p = 0.009) and tiredness (p = 0.001). There were positive associations between Aspergillus versicolor DNA in Petri dish samples, ocular symptoms (p = 0.02) and tiredness (p = 0.001). The level of the mycotoxin verrucarol (produced by Stachybotrys chartarum) in swab samples was positively associated with tiredness (p = 0.04). Streptomyces DNA in swab samples (p = 0.03) and Petri dish samples (p = 0.03) were negatively associated with tiredness. In conclusion, total fungal contamination, measured as total fungal DNA) in the classrooms, Aspergillus versicolor and verrucarol can be risk factors for rhinitis and SBS symptoms among students in the tropical country Malaysia.

Indexed as

AdolescentAllergensAnimalsCatsDNA, FungalDustEyeFatigueFemaleHeadacheHumansMalaysiaMaleModels, TheoreticalMycotoxinsPharynxAllergensDNA, FungalDustMycotoxins

Identifiers

PMID26829324
PMCPMC4734676
OpenAlexW2254040658

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.