Abstract

Minimally Invasive Surgery for Intracerebral Hematoma Evacuation followed by Rosiglitazone Infusion Therapy Increased Perihematomal Occludin, Zonula Occludens-1 Expression and Decreased the Blood Brain Barrier Permeability in Rabbits

Author(s): Siying Ren, Guofeng Wu1, Yuanxin Huang, Qin Yang, Yan Zhang, Jun Li, Yinghui Li, Mengzhou Xue

Objective:

To observe the effects of minimally invasive surgery (MIS) for hematoma of intracerebral hemorrhage (ICH) evacuation followed by rosiglitazone (RSG) infusion therapy on perihematomal tight junction associated proteins occludin and zonula occludens-1 (ZO-1) expression as well as blood brain barrier (BBB) permeability in rabbits.

Methods:

A total of 50 male rabbits (2.5-3.5 kg) were randomly assigned to a sham group (Sham group, 10 rabbits), an ICH model group (HM group, 10 rabbits), a RSG medication group (RSG group, 10 rabbits), a minimally invasive surgery group (MIS group, 10 rabbits) and a MIS combined with RSG group (MIS+RSG group, 10 rabbits). ICH was induced in all of the rabbits except for those in the Sham group. An MIS was performed to evacuate the hematoma at 6 hours after the successful preparation of the ICH model in the MIS group and the MIS+RSG group. The RSG (0.5mg, dissolved in 0.1 ml of 0.9% sodium chloride solution) was infused into the hematoma area in the RSG group and the MIS+RSG group. All rabbits were sacrificed on day 7 after the relative processes were performed successfully, and the perihematomal brain tissue was removed to determine the occludin and ZO-1 expression and BBB permeability by Evens Blue (EB).

Results:

The occludin and ZO-1 expression were all significantly decreased and the BBB permeability was increased in the HM group compared with the Sham group. The RSG used alone or performing the MIS alone to evacuate the ICH resulted in a marked increase in the occludin and ZO-1 expression and decrease in BBB permeability. The MIS+RSG group displayed a great increase in the occludin and ZO-1 expression and a more significant decrease in BBB permeability.

Conclusions:

The MIS combined with RSG medication could significantly increase the perihematomal occludin and ZO-1 expression and decrease in BBB permeability which plays an important therapeutic role in secondary brain damage following ICH.