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Apoprotein B in subretinal fluid

V Huerva1, B Sinués, L M Canto

  • 1Department of Ophthalmology, University Clinic Hospital, Zaragoza, Spain.

International Ophthalmology
|January 1, 1996
PubMed
Summary
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Apolipoprotein B (apo B) was present in subretinal fluid (SRF) of most retinal detachment patients. Apo B levels in SRF did not correlate with serum levels, detachment size, or duration, suggesting a preserved outer blood retinal barrier.

Area of Science:

  • Ophthalmology
  • Retinal Diseases
  • Biochemistry

Background:

  • The outer blood retinal barrier (oBRB) integrity is crucial in retinal diseases.
  • Apolipoprotein B (apo B) is a key component of lipoproteins and its presence can indicate barrier permeability.

Purpose of the Study:

  • To investigate the presence and concentration of apolipoprotein B (apo B) in subretinal fluid (SRF) from patients with rhegmatogenous retinal detachment (RRD).
  • To explore potential correlations between SRF apo B levels and serum apo B levels, as well as clinical parameters of RRD.

Main Methods:

  • Immunoelectrophoresis was used to detect and quantify apo B in SRF and serum samples.
  • Samples were collected from 15 patients with RRD and 5 with retinal detachment and proliferative vitreoretinopathy (PVR).

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Main Results:

  • Apo B was detected in the SRF of 11 out of 15 RRD patients.
  • Mean apo B concentration was significantly lower in SRF (1.49 mg/dl) compared to serum (108.41 mg/dl).
  • No significant correlation was found between SRF apo B and serum apo B, RRD duration, RRD size, or the presence of PVR.

Conclusions:

  • The findings suggest that the outer blood retinal barrier remains largely preserved during rhegmatogenous retinal detachment.
  • The presence of apo B in SRF, despite low concentrations, may indicate limited but specific transport mechanisms across the oBRB.