TY - JOUR T1 - Effect of short-term macrophage depletion in the development of posterior capsule opacification in rodents JF - British Journal of Ophthalmology JO - Br J Ophthalmol SP - 1528 LP - 1533 DO - 10.1136/bjo.2007.130518 VL - 92 IS - 11 AU - N Lois AU - R Dawson AU - J Townend AU - A D McKinnon AU - G C Smith AU - R van’t Hof AU - N Van Rooijen AU - J V Forrester Y1 - 2008/11/01 UR - http://bjo.bmj.com/content/92/11/1528.abstract N2 - Aim: To evaluate the role of macrophages in the development of posterior capsule opacification (PCO).Methods: For this purpose, an extracapsular lens extraction was performed in 18 consecutive Sprague-Dawley rats. Animals were treated with liposomal clodronate (Cl2MDP-lip-treated group, n = 10) or phosphate-buffered saline (PBS) (control group, n = 8) 1 day preoperatively and on the first day postoperatively, and sacrificed 3 days postoperatively. Masked clinical, light microscopy and immunohistochemistry studies were conducted. The Fisher exact test and randomisation test were used to assess statistically differences between groups.Results: A statistically significant reduction in the number of macrophages (ED1+, ED7+, ED8+) was found in the Cl2MDP-lip-treated group compared with the PBS-lip-treated group (p = 0.048, p = 0.004, p = 0.027, respectively). There were no statistically significant differences with regards to the presence/absence of central opacification (p = 0.29) and capsular wrinkling (p = 0.21) as detected clinically between groups. Similarly, a qualitative evaluation of the degree of PCO with regards to lens epithelial cell (LEC) proliferation, capsular wrinkling and Soemmerring ring formation showed no statistically significance between groups (p = 0.27, p = 0.061, p = 1.0, respectively). However, a statistically significant reduction in the number of lens epithelial cells (LEC) counted in the centre of the posterior capsule was found in the Cl2MDP-lip-treated group (p = 0.009).Conclusion: Depletion of macrophages was accompanied by a reduction in LEC in the centre of the posterior capsule in rodents. ER -