Stored human septal chondrocyte viability analyzed by confocal microscopy

Area of Science:

• Biomedical Engineering
• Tissue Engineering
• Cell Biology

Background:

• Human nasal septal cartilage is vital for structural integrity and is used in tissue engineering.
• Chondrocyte viability is critical for successful cartilage regeneration and repair.
• Understanding optimal storage conditions is essential for preserving chondrocyte function.

Purpose of the Study:

• To determine the impact of prolonged storage duration and temperature on human nasal septal chondrocyte viability.
• To assess the implications of these findings for cartilage tissue engineering.

Main Methods:

• Human septal cartilage from 10 donors was stored in bacteriostatic saline at 4°C and 23°C.
• Chondrocyte viability was assessed using confocal laser scanning microscopy at 5-day intervals.
• Control specimens were evaluated immediately post-harvest.

Main Results:

• Initial chondrocyte viability post-harvest was high (96%).
• Cell survival remained stable for the first week across all conditions.
• At 23°C, 54% of cells survived for 20 days.
• At 4°C, 70% survived for 1 month, and 38% survived for 2 months, with a more irregular cell death pattern compared to warm storage.

Conclusions:

• Human nasal septal chondrocytes exhibit prolonged viability when stored in simple saline solution.
• Cold storage (4°C) significantly enhances chondrocyte survival compared to room temperature (23°C).
• These findings support the feasibility of using stored septal cartilage for tissue engineering purposes.