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Updated: Aug 29, 2026
Flow Cytometry Analysis of Tissue Factor Expression in Human Platelets
Published on: November 22, 2024
[Determination of platelet activating factor in middle ear effusion of patients with secretory oitits media]
Liang Chen1, Yile Huang, Jingmin You
1Department of Otorhinolaryngology, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010.
Objective:
To study the role of platelet activating factor (PAF) in the pathogenesis of secretory otitis media (SOM).
Method:
The content of PAF in blood plasma and middle ear effusion(MEE) were measured in 56(68years) patients with secretory otitis media and in 40 normal subjects respectively by RP-HPLC.
Result:
The concentration of PAF in MEE was remarkably higher than those in blood plasma (P < 0.01). The concentration of PAF in blood plasma in the SOM group was higher than those in the normal control group(P < 0.05). The concentration of PAF of MEE in the mucous fluid group was higher than those in the serous fluid group(P < 0.01).
Conclusion:
PAF might be an important mediator in MEE of SOM, it might be closely related to the persistence of SOM, and might play an important role in the pathogenesis of SOM.
Insights
Platelet activating factor (PAF) is significantly elevated in middle ear effusion (MEE) of patients with secretory otitis media (SOM). This finding suggests PAF plays a key role in SOM pathogenesis and persistence.
Area of Science:
- Otolaryngology
- Immunology
- Biochemistry
Context:
- Secretory otitis media (SOM) is a common condition characterized by fluid in the middle ear.
- The exact mechanisms driving SOM pathogenesis are not fully understood.
- Platelet activating factor (PAF) is a potent inflammatory mediator.
Purpose:
- To investigate the role of platelet activating factor (PAF) in the pathogenesis of secretory otitis media (SOM).
Summary:
- PAF concentrations were measured in blood plasma and middle ear effusion (MEE) of 56 SOM patients and 40 controls using RP-HPLC.
- PAF levels were significantly higher in MEE compared to blood plasma (P < 0.01).
- PAF levels in blood plasma were elevated in SOM patients versus controls (P < 0.05), and higher in mucous MEE than serous MEE (P < 0.01).
Impact:
- PAF may be a crucial mediator in the middle ear effusion of SOM.
- Elevated PAF levels are potentially linked to the chronicity of SOM.
- This study highlights PAF's significant role in the development of secretory otitis media.
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