Catheter tips are a possible resource for biological study on catheter failure

Area of Science:

• Biomedical Engineering
• Molecular Biology
• Pathology

Background:

• Catheter failure (CF) mechanisms remain poorly understood.
• Catheter tips are often discarded, yet may contain valuable biological information.
• Inflammation and coagulation are key pathological processes in CF.

Purpose of the Study:

• To investigate the molecular mechanisms of CF using catheter tips.
• To evaluate catheter tips as a biological resource for CF research.
• To identify risk factors associated with inflammation and coagulation in CF.

Main Methods:

• Histological (hematoxylin-eosin staining) and molecular analyses (real-time RT-PCR) of catheter tips from CF and non-CF groups.
• Gene expression analysis of 18S rRNA, IL-1β, TNF-α, tPA, and SERPINE1 (PAI-1).
• Correlation analysis between gene expression, CF, and clinical factors.

Main Results:

• Attached nuclear cells were observed on both CF and non-CF catheter surfaces.
• Significantly higher SERPINE1 (PAI-1) expression was found in the CF group (p=0.01).
• Contact with blood vessels during catheter placement was associated with elevated SERPINE1 expression (p=0.04).

Conclusions:

• Catheter tips serve as a viable biological resource for investigating CF.
• SERPINE1 expression analysis on catheter tips can indicate pathological conditions.
• Further research using catheter tips is crucial for understanding CF molecular mechanisms.