Cytoskeletal drugs prevent posterior capsular opacification in human lens capsule in vitro

  • Jeyalakshmi Sureshkumar
  • Aravind Haripriya
  • Veerappan Muthukkaruppan
  • Paul L. Kaufman
  • Baohe Tian
Basic Science
First Online:
Received:
Revised:
Accepted:

Abstract

Background

To determine whether the cytoskeletal drugs H-7 and Latrunculin B (LAT-B) inhibit posterior capsular opacification (PCO) in the cultured human lens capsular bag.

Methods

Following extracapsular cataract (lens) extraction in human donor eyes, the capsular bag was prepared and cultured by standard techniques. Forty-eight capsular bags were studied, of which 13 were treated with H-7 (50, 100 or 300 μM), 12 with 1% BSS (vehicle of H-7), 11 with LAT-B (2, 5 or 10 μM), and 12 with 0.25% DMSO (vehicle of LAT-B). Forty out of the 48 capsular bags were from paired eyes of 20 donors, with one bag being treated with H-7/LAT-B and the other with BSS/DMSO for each pair, including 20 for the H-7-BSS protocol and 20 for the LAT-B-DMSO protocol. The medium with the cytoskeletal drug/vehicle was replaced every 3–4 days for 4 weeks. PCO was assessed daily using inverted phase-contrast microscopy, and scored on a 4-point scale.

Results

In all cultures with BSS or DMSO, residual lens epithelial cells (LECs) on the anterior capsule migrated to and proliferated on the posterior capsule by 3–7 days, and apparent LEC growth on the posterior capsule with severe capsular wrinkling (PCO Grade 3) was seen by 2-3 weeks. When treated continuously with H-7 or LAT-B, the migration and proliferation of LECs and the capsular wrinkling were inhibited in a dose-dependent manner, with the inhibition being complete (PCO Grade 0) in the 300 μM H-7 (n = 8, p < 0.001) or 10 μM LAT-B culture (n = 3, p = 0.002).

Conclusion

H-7 and LAT-B dose-dependently inhibited PCO formation in the cultured human lens capsular bags, suggesting that cytoskeletal drugs might prevent PCO formation after surgery in the human eye.

Keywords

Actin cytoskeleton H-7 Human eye Latrunculin B Lens epithelial cells Posterior capsular opacification 
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Notes

Acknowledgement

This study was supported by grants from the National Eye Institute R21 EY017612 and from Aravind Medical Research Foundation. The authors thank Rotary Aravind International Eye Bank for providing human donor eyes, and Mr. K.Jeyaram Ilaiyaraja, Biostatistician in Aravind Eye Care System, for statistical analysis

Financial interest

No financial interest.

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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Jeyalakshmi Sureshkumar
    • 1
  • Aravind Haripriya
    • 2
  • Veerappan Muthukkaruppan
    • 1
  • Paul L. Kaufman
    • 3
  • Baohe Tian
    • 3
  1. 1.Aravind Medical Research FoundationDr. G. Venkataswamy Eye Research InstituteTamil NaduIndia
  2. 2.Cataract ClinicAravind Eye HospitalMaduraiIndia
  3. 3.Ophthalmology & Visual SciencesUniversity of WisconsinMadisonUSA

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