---
title: Olfactory Dysfunction of Rhinosinusitis - Cyclic Adenosine Monophosphate (cAMP)/Calcium Signaling Study
nct_id: NCT00970190
overall_status: COMPLETED
sponsor: Greg Davis
study_type: OBSERVATIONAL
primary_condition: Sinusitis
countries: United States
canonical_url: "https://parkinsonspathways.com/agent/trials/NCT00970190.md"
clinicaltrials_gov: "https://clinicaltrials.gov/study/NCT00970190"
ct_last_update_post_date: 2014-12-11
last_seen_at: "2026-05-12T06:53:24.485Z"
source: ClinicalTrials.gov (mirrored, no enrichment)
---
# Olfactory Dysfunction of Rhinosinusitis - Cyclic Adenosine Monophosphate (cAMP)/Calcium Signaling Study

**Official Title:** Olfactory Dysfunction of Rhinosinusitis - cAMP/Calcium Signaling Study

**NCT ID:** [NCT00970190](https://clinicaltrials.gov/study/NCT00970190)

## Key Facts

- **Status:** COMPLETED
- **Study Type:** OBSERVATIONAL
- **Target Enrollment:** 99
- **Lead Sponsor:** Greg Davis
- **Conditions:** Sinusitis
- **Start Date:** 2009-08
- **Completion Date:** 2014-04
- **CT.gov Last Update:** 2014-12-11

## Brief Summary

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.

## Detailed Description

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.

## Eligibility

- **Minimum age:** 18 Years
- **Sex:** ALL
- **Healthy Volunteers:** No

```
Inclusion Criteria:

* Subjects will be 18 years old and over and scheduled for one of the following:

  * endoscopic sinus surgery for chronic sinusitis
  * endoscopic transnasal approach to the pituitary for pituitary tumor removal
  * endoscopic inferior turbinectomy or septoplasty for nasal congestion
  * endoscopic repair of cerebrospinal fluid (CSF) leaks

Exclusion Criteria:

* Subjects are excluded if they are unable to give informed consent or unable to complete self-administered questionnaires due to English language barrier, cognitive impairment, or severe medical conditions
```

## Locations (1)

- University of Washington Medical Center, Seattle, Washington, United States

## Recent Field Changes (last 30 days)

- `status.overallStatus` — added _(2026-05-12)_
- `status.primaryCompletionDate` — added _(2026-05-12)_
- `status.completionDate` — added _(2026-05-12)_
- `status.lastUpdatePostDate` — added _(2026-05-12)_
- `design.enrollmentCount` — added _(2026-05-12)_
- `eligibility.criteria` — added _(2026-05-12)_
- `eligibility.minAge` — added _(2026-05-12)_
- `eligibility.sex` — added _(2026-05-12)_
- `sponsor.lead` — added _(2026-05-12)_
- `results.hasResults` — added _(2026-05-12)_
- `locations.university of washington medical center|seattle|washington|united states` — added _(2026-05-12)_

---

*Canonical: https://parkinsonspathways.com/agent/trials/NCT00970190.md*  
*Source data (authoritative): https://clinicaltrials.gov/study/NCT00970190*  
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