Olfactory Dysfunction of Rhinosinusitis (ODOR)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00797004
Recruitment Status : Completed
First Posted : November 24, 2008
Last Update Posted : June 29, 2012
Information provided by (Responsible Party):
Greg Davis, University of Washington

Brief Summary:

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

Detailed Description:

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
Observational Model: Cohort
Time Perspective: Prospective
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

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
surgical patients from the UW Otolaryngology - Head and Neck surgery clinic

Inclusion Criteria:

  • over 18 yrs. of age, scheduled for: a.) endoscopic sinus surgery for chronic sinusitis, b.) endoscopic transnasal approach to the pituitary for pituitary tumor removal, c.) endoscopic inferior turbinectomy for nasal congestion d.)endoscopic repair of cerebrospinal fluid leaks

Exclusion Criteria:

  • unable to give informed consent or complete questionnaires due to language, cognitive impairment or sever medical conditions.

Information from the National Library of Medicine

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 identifier (NCT number): NCT00797004

United States, Washington
University of Washington Medical Center
Seattle, Washington, United States, 98195
Sponsors and Collaborators
Greg Davis
Principal Investigator: Greg E Davis, MD, MPH University of Washington

Publications of Results:
Responsible Party: Greg Davis, Assistant Professor, University of Washington Identifier: NCT00797004     History of Changes
Other Study ID Numbers: 35031-B
First Posted: November 24, 2008    Key Record Dates
Last Update Posted: June 29, 2012
Last Verified: June 2012

Keywords provided by Greg Davis, University of Washington:
olfactory dysfunction

Additional relevant MeSH terms:
Paranasal Sinus Diseases
Nose Diseases
Respiratory Tract Diseases
Respiratory Tract Infections
Otorhinolaryngologic Diseases