Evidence map›Paper›PMID 27306800›Full record

ArticleMicrobiome2016

Two sampling methods yield distinct microbial signatures in the nasopharynges of asthmatic children.

Marcos Pérez-Losada, Keith A Crandall, Robert J Freishtat

Abstract readComparative Study
In one paragraph

Article in Microbiome, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

29 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. The respiratory tract virome: unravelling the role of viral dark matter in respiratory health and disease.European respiratory review : an official journal of the European Respiratory Society · 2025
    Review
  3. Dihydroartemisinin Modulates Enteric Glial Cell Heterogeneity to Alleviate Colitis.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024
    Article
  4. Article
  5. Article
  6. Review
  7. A Review on the Nasal Microbiome and Various Disease Conditions for Newer Approaches to Treatments.Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India · 2023
    Article
  8. Article
  9. Article
  10. Review
  11. Review
  12. The Environmental Microbiome, Allergic Disease, and Asthma.The journal of allergy and clinical immunology. In practice · 2022
    Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Review
  18. The microbiome of the nasopharynx.Journal of medical microbiology · 2021
    Review
  19. Article
  20. 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

3 authors.

Marcos Pérez-LosadaComputational Biology Institute, George Washington University, Innovation Hall, Suite 305, 45085 University Drive, Ashburn, VA, 20147, USA. mlosada323@gmail.com.
Keith A CrandallComputational Biology Institute, George Washington University, Innovation Hall, Suite 305, 45085 University Drive, Ashburn, VA, 20147, USA.
Robert J FreishtatDivision of Emergency Medicine, Children's National Medical Center, Washington, DC, 20010, USA.

Funding

Clinical and Translational Science Institute at Children's NationalUL1TR000075 · NCATS · CHILDREN'S RESEARCH INSTITUTE · PI GUAY-WOODFORD, LISA MARIE · 2012 to 2015
$13.7M
Vitamin D, Steroids, and Asthma in African American YouthR01MD007075 · NIMHD · CHILDREN'S RESEARCH INSTITUTE · PI FREISHTAT, ROBERT J · 2012 to 2016
$2.2M
K12 Career Development Program: Omics of Pediatric Lung Diseases in DCK12HL119994 · NHLBI · CHILDREN'S RESEARCH INSTITUTE · PI FREISHTAT, ROBERT J · 2013 to 2017
$1.3M
NHLBI NIH HHS K12 HL119994NIMHD NIH HHS R01 MD007075
6 · The paper itself

Abstract

backgroundThe nasopharynx is a reservoir for pathogens associated with respiratory illnesses, such as asthma. Next-generation sequencing (NGS) has been used to characterize the nasopharyngeal microbiome during health and disease. Most studies so far have surveyed the nasopharynx as a whole; however, less is known about spatial variation (biogeography) in nasal microenvironments and how sampling techniques may capture that microbial diversity.

findingsWe used targeted 16S rRNA MiSeq sequencing and two different sampling strategies [nasal washes (NW) and nasal brushes (NB)] to characterize the nasopharyngeal microbiota in 30 asthmatic children. Nasal brushing is more abrasive than nasal washing and targeted the inner portion of the inferior turbinate. This region is expected to be different from other nasal microenvironments. Nasal washing is not spatially specific. Our 30 × 2 nasal microbiomes generated 1,474,497 sequences, from which we identified an average of 157 and 186 OTUs per sample in the NW and NB groups, respectively. Microbiotas from NB showed significantly higher alpha-diversity than microbiotas from NW. Similarly, both nasal microbiotas were distinct from each other (PCoA) and significantly differed in their community composition and abundance in at least 9 genera (effective size ≥1 %).

conclusionsNasopharyngeal microenvironments in asthmatic children contain microbiotas with different diversity and structure. Nasal washes and brushes capture that diversity differently. Future microbial studies of the nasopharynx need to be aware of potential spatial variation (biogeography).

Indexed as

AdolescentAsthmaBacteriaChildDNA, BacterialDNA, RibosomalHigh-Throughput Nucleotide SequencingHumansMicrobiotaNasopharynxRNA, Ribosomal, 16SSequence Analysis, DNASpecimen HandlingDNA, BacterialDNA, RibosomalRNA, Ribosomal, 16S16S rRNAAsthmaMicrobiomeMicroenvironmentNasopharynx

Identifiers

PMID27306800
PMCPMC4910261

What OpenQuestion holds

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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.