Evidence map›Paper›PMID 22626594›Full record

ArticleAnnals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology2012

Endotoxin exposure in inner-city schools and homes of children with asthma.

William J Sheehan, Elaine B Hoffman, Chunxia Fu, Sachin N Baxi, Ann Bailey, Eva-Maria King, Martin D Chapman, Jeffrey P Lane, Jonathan M Gaffin, Perdita Permaul and 2 more

Registry-linked trialAbstract read
In one paragraph

Article in Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01756391 (Allergens in Inner-City Schools and Childhood Asthma), which is not on this map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
3.9field-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.

NCT01756391 completednot on this map

Allergens in Inner-City Schools and Childhood Asthma

TypeobservationalSponsorBoston Children's HospitalRan2008 to 2014Enrolled351ConditionsAsthma
3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 42 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. The Effects of the Environment on Asthma Disease Activity.Immunology and allergy clinics of North America · 2019
    Review
  5. Inner-City Asthma in Children.Clinical reviews in allergy & immunology · 2019
    Review
  6. School exposure and asthma.Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology · 2018
    Review
  7. Article
  8. Article
  9. Recent advances in environmental controls outside the home setting.Current opinion in allergy and clinical immunology · 2016
    Review
  10. Inner-city asthma: special considerations for management.Current opinion in allergy and clinical immunology · 2016
    Review
  11. Review
  12. Social disadvantage and asthma control in children.Paediatric respiratory reviews · 2014
    Review
  13. The indoor environment and inner-city childhood asthma.Asian Pacific journal of allergy and immunology · 2014
    Review
  14. Review
  15. Obstructive airway disease in urban populations.Current opinion in pulmonary medicine · 2014
    Review
  16. Article
  17. Article
  18. Article
  19. School Environmental Intervention Programs.The journal of allergy and clinical immunology. In practice
    Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 4 institutions in 1 country.

William J SheehanDepartment of Pediatrics, Division of Allergy and Immunology, Children's Hospital, 300 Longwood Ave., Boston, MA 02115, USA.
Elaine B Hoffman
Chunxia Fu
Sachin N Baxi
Ann Bailey
Eva-Maria King
Martin D Chapman
Jeffrey P Lane
Jonathan M Gaffin
Perdita Permaul
Diane R Gold
Wanda Phipatanakul
Harvard University · USBoston Children's Hospital · USBrigham and Women's Hospital · USIndoor Biotechnologies (United States) · US

Funding

HARVARD CLINICAL AND TRANSLATIONAL SCIENCE CENTER (UL1)UL1RR025758 · NCRR · HARVARD MEDICAL SCHOOL · PI NADLER, LEE MARSHALL · 2008 to 2011
$91.4M
Translational Research Support CoreP30ES000002 · NIEHS · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI SUSAN A KORRICK · 1985 to 2026
$44.6M
MOLECULAR BASIS OF ALLERGIC AND IMMUNOLOGIC DISEASET32AI007512 · NIAID · CHILDREN'S HOSPITAL BOSTON · PI Janet Chou, Peter A Nigrovic · 1996 to 2026
$13.1M
ALLERGENS IN INNER-CITY SCHOOLS AND CHILDHOOD ASTHMAR01AI073964 · NIAID · BRIGHAM AND WOMEN'S HOSPITAL · PI PHIPATANAKUL, WANDA · 2008 to 2012
$4.6M
NCRR NIH HHS UL1 RR 025758NCRR NIH HHS UL1 RR025758NIAID NIH HHS R01 AI 073964NIAID NIH HHS R01 AI073964NIAID NIH HHS R01 AI 073964-02S1NIAID NIH HHS T32 AI007512NIAID NIH HHS T32-AI-007512NIEHS NIH HHS P30 ES000002
6 · The paper itself

Abstract

backgroundEndotoxins are stimulators of the immune system and, despite their potential to protect against allergy, have been associated with early wheezing and asthma morbidity.

objectiveTo compare inner-city school endotoxin exposure with home endotoxin exposure in children with asthma.

methodsStudents with asthma were recruited from 12 urban elementary schools. Settled and airborne dust samples, linked to enrolled students, were collected from school classrooms, gymnasiums, and cafeterias twice during the academic year. For comparison, settled dust was collected once from the bedrooms of students with asthma.

resultsTwo hundred twenty-nine school settled dust samples and 118 bedroom settled dust samples were collected and analyzed for endotoxin. The median endotoxin concentration for school samples was 13.4 EU/mg (range, 0.7-360.7 EU/mg) and for home samples was 7.0 EU/mg (range = LLOD-843.0 EU/mg). The median concentration within each individual school varied from 6.6 EU/mg to 24.0 EU/mg. One hundred four students with asthma had matched classroom and bedroom endotoxin exposure measurements performed in the same season and demonstrated significantly higher concentrations of endotoxin in the students' classrooms (mean log value, 1.13 vs 0.99, P = .04). The median of the classrooms was 12.5 EU/mg compared with their bedrooms, with a median of 7.0 EU/mg. Within the school environment, no significant difference was seen between the fall and spring samples (mean log value 1.14 vs 1.09; P = .35).

conclusionInner-city children with asthma were exposed to higher concentrations of endotoxin in their classrooms as compared with their bedrooms. Further studies are needed to evaluate school endotoxin exposure as a factor in asthma morbidity.

Indexed as

AdolescentAir Pollution, IndoorAllergensAsthmaChildDustEndotoxinsFemaleHousingHumansMaleMassachusettsSchoolsSeasonsUrban PopulationAllergensDustEndotoxins

Identifiers

PMID22626594
PMCPMC3367391
OpenAlexW2055818533

What OpenQuestion holds

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Registered trials

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.