Olfactory Dysfunction of Rhinosinusitis - Cyclic Adenosine Monophosphate (cAMP)/Calcium Signaling Study
The study examines the biochemistry underlying human olfaction in both normal and diseased states.
The study aims are: 1. to determine the levels of cAMP in olfactory tissue from people with chronic rhinosinusitis and other nasal disorders. 2. to correlate preoperative olfactory function with cAMP levels from biopsied olfactory tissue. 3. to determine odorant and pheromone-mediated activation of cultured human olfactory sensory neurons using calcium imaging and 4. to determine odorant and pheromone-mediated activation of cultured human olfactory sensory neurons using "smell-chip" technology.
|Study Design:||Observational Model: Cohort
Time Perspective: Prospective
|Official Title:||Olfactory Dysfunction of Rhinosinusitis - cAMP/Calcium Signaling Study|
Samples consist of discarded tissue resulting from the following clinical procedures: endoscopic sinus surgery for chronic sinusitis, endoscopic transnasal approach to the pituitary for pituitary tumor removal, endoscopic inferior turbinectomy or septoplasty for nasal congestion and endoscopic repair of CSF leaks. Samples will only be retained for 1 year post-surgery and then destroyed.
|Study Start Date:||August 2009|
|Study Completion Date:||April 2014|
|Primary Completion Date:||April 2014 (Final data collection date for primary outcome measure)|
Subject will be recruited from those scheduled to have endoscopic sinus surgery and similar procedures. This study uses the tissue that would normally be discarded during the surgical process. The tissue is cultured and frozen for purposes of the following testing:
odor detection and signal transduction, cyclic adenosine monophosphate and odor detection, the role of cAMP in olfactory dysfunction, and pheromone detection.
Only tissue that would normally be discarded during the course of the surgery will be used. The study does not interfere with or change any clinical care.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00970190
|United States, Washington|
|University of Washington Medical Center|
|Seattle, Washington, United States, 98195|
|Principal Investigator:||Greg E Davis, MD, MPH||University of Washington|