A Study to Compare the Effects of Different Sized Particles on Cells in the Nose
Public ClinicalTrials.gov record NCT01257191. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Cellular Inflammation Characterization of Nasal Challenges With Fine and Ultrafine Particles
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The goal of this study is to see how the type and size of particles found in air pollution affects inflammation in the nose in people who are skin test positive to at least one allergen. It has been observed that pollution makes allergies worse. It has also been suggested that very small particles may affect allergies more than larger particles.
Study identification
- NCT ID
- NCT01257191
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 1
- Enrollment
- 25 participants
Conditions and interventions
Interventions
- Carbon Black Drug
- Diesel Exhaust Particles Drug
- Fine Concentrated Ambient Particles Drug
- Ultrafine Concentrated Ambient Particles Drug
- Saline Drug
Drug
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Mar 31, 2010
- Primary completion
- Dec 31, 2011
- Completion
- Dec 31, 2011
- Last update posted
- Jan 10, 2017
2010 – 2012
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of California, Los Angeles | Los Angeles | California | 90095 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01257191, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jan 10, 2017 · Synced Sep 3, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT01257191 live on ClinicalTrials.gov.