The Effect of Halofuginone Use on Epidural Fibrosis After Spinal Surgery: An Animal Experiment.

Abstract

To investigate the effectiveness of local halofuginone application for spinal epidural fibrosis (EF) after lumbar laminectomy in rats. Forty rats were equally divided into four groups (Groups I-IV; 10 rats in each group), and lumbar laminectomy was performed under general anesthesia. After laminectomy, Group I received saline (NaCl 0.9%) locally (control), Group II received spongostan, Group III received 0.5 mL of halofuginone-impregnated spongostan, and Group IV received 0.5 mL of halofuginone. Spongostan was used to prolong the exposure period of halofuginone. All rats were sacrificed after four weeks and evaluated according to histopathological criteria. A p-value of < 0.05 was considered statistically significant. Fibrosis was significantly lower in Group IV than in Group I (p < 0.05). There was no significant difference in fibrosis between Group II/III and Group I. It was observed that spongostan increased fibrosis. Halofuginone helps prevent EF after spinal surgery. However, further clinical and experimental studies are needed to assess its safety in humans.