Olfactory Dysfunction of Rhinosinusitis (ODOR)
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|ClinicalTrials.gov Identifier: NCT00797004|
Recruitment Status : Completed
First Posted : November 24, 2008
Last Update Posted : June 29, 2012
The purpose of this research is to improve understanding of the molecular and functional properties of the human olfactory system.
The specific aims are:
- to determine the location of AC3 and Golf proteins in the human olfactory epithelium from freshly harvested nasal/sinus tissue of surgical patients
- to perform objective functional studies on fresh human nasal/sinus tissue using an electro-olfactogram (EOG) whic measures the electrical activity of olfactory sensory neurons in fresh biopsied tissue in response to odor or pheromone stimulation. An organotypic culture system for human tissue has been established to optimize the electrical signal acquisition.
- to correlate the AC3 and Golf expression profiles with pre-operative testing of human olfactory function
- to correlate the EOG findings with pre-operative testing of human olfactory function.
- to systematically evaluate the role of individual intranasal agents on olfaction to further optimize the electrical signal acquisition from olfactory tissue.
|Condition or disease|
This is a prospective cohort study. Subjects will be recruited from the group of patients at the University of Washington Otolaryngology-Head and Neck Surgery Clinic who will undergo endoscopic sinus surgery for chronic sinusitis and other disorders of the nasal cavity and sinuses.
Subjects will sign consent and complete a subjective smell test (UPSIT--University of Pennsylvania Smell Identification Test), and the SNOT-20 (Sinonasal Outcome Test-20)
During their surgery, subjects will have two to four pieces of normally discarded tissue preserved for the study. Subjects will also have two to four pieces of healthy tissue removed (total size approximately that of a pencil eraser tip)depending on the type of surgery involved. The following procedures will be performed on these tissues:
- immunocytochemistry utilizing antibodies to AC3 and Golf to determine the patterns and levels of expression of these proteins
- two odorants, isoamyl acetate and citralva, to elicit odorant-induced activity from the human olfactory sensory neurons. The tissue will also be subjected to two putative human pheromones: 4,16-androstadiene-3-ol and 1,3,5(10),16-estrateraen-3-ol.
- application of six commonly used intranasal agents: 0.9% saline, 1:1000,000 epinephrine, 0.05% oxymetazoline, 1% lidocaine, Zicam (0.12% zinc gluconate) and Nasocort AQ (triamcinolone acetate).
|Study Type :||Observational|
|Actual Enrollment :||23 participants|
|Official Title:||Olfactory Dysfunction of Rhinosinusitis|
|Study Start Date :||November 2008|
|Actual Primary Completion Date :||September 2010|
|Actual Study Completion Date :||September 2010|
|endoscopic sinus procedure candidates|
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00797004
|United States, Washington|
|University of Washington Medical Center|
|Seattle, Washington, United States, 98195|
|Principal Investigator:||Greg E Davis, MD, MPH||University of Washington|