NCT04191590

Impact of Chronic Rhinosinusitis on the Index of Ciliary Beat Efficiency Using Fluorescent Nanosticks: (R-IMPAC)

Impact of Chronic Rhinosinusitis on the Index of Ciliary Beat Efficiency Using Fluorescent Nanosticks

• Status: Withdrawn
• Phase: N/A
• Study type: Interventional
• Enrollment: 0 (actual)
• Sponsor: Centre Hospitalier Intercommunal Creteil · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

Impact of chronic rhinosinusitis on the index of ciliary beat efficiency using fluorescent nanosticks

Detailed description

To date, the assessment of ciliary beat is only possible ex vivo on epithelial cells obtained from upper airway brushing. A previous prospective study (I-IsBac) showed a change in ciliary beat (in terms of coordination and frequency) in bacterial rhinosinusitis. The study of ex-vivo ciliary movement appears to be an interesting tool to understand the pathophysiology of CSRs and to guide and evaluate treatment. A new tool to evaluate the effectiveness of the ex-vivo lash beat has been developed. This tool measures shear stress by tracking balls along the ciliary margin. This measurement of ex-vivo shear stress by bead tracking is a validated technique. However, microbead tracking is limited by its low spatial and temporal resolution, long measurement time and heavy post-processing of acquisition data, making this method difficult to use in clinical routine. Monitoring ex-vivo fluorescent nano-batons could represent a simpler alternative for the clinician. This measurement is now made possible by Phosphate Lanthanum Lanthanum Nano-batons (LaPO4) whose luminescence is directly proportional to the shear. The objective of this research project is to validate this new tool in patients with CSR by comparing it to a group of control subjects free of nasal inflammation.

Conditions

• Chronic Rhinosinusitis (Diagnosis)

Interventions

Type	Name	Description
PROCEDURE	nasal brushing and bacteriological sample	A nasal brushing as well as a bacteriological sample using a swab under general anesthesia at the beginning of the endonasal surgery procedure

Timeline

• Start date: 2022-01-01
• Primary completion: 2026-01-01
• Completion: 2026-09-01
• First posted: 2019-12-10
• Last updated: 2026-02-12

Locations

2 sites across 1 country: France