Table 1 Qualitative result summary of the optic and electronic microscopy analysis.

From: Histopathological and Ultrastructural Changes after Electroporation in Pig Liver Using Parallel-Plate Electrodes and High-Performance Generator

 

3 hours

3 days

7 days

Lobular architecture preservation

+++

++

+

Hepatic plates organization

+++

++

+/−

Lesions

Hemorrhage

+++

+

Inflammation

+

++

Sinusoidal endothelium

−/+

Hepatocytes

Plasma membrane disruption (EM)

+++

+++

+++

Plasma membrane disruption (OM)

+

++

+++

Cellular discohesion (OM)

+

++

+++

Nuclear changes (OM)

+

++

+++

Nuclear envelope preservation (EM)

+++

+

Vessel endothelium

+/−

++

Bile duct epithelium

++

+++

Necrosis signs

+

++

+++

Regeneration Signs

Spindle cells

++

+++

Mitotic stromal cells

+

+++

Multinucleated hepatocytes

++

+++

Fibrosis

+

+++

Angiogenesis

+

+++

Regenerative nodules

+

+++

Hepatic acinar organization

+

++

Neoformation of portal bile ducts

++

+++

Mitotic bile duct epithelium

+

+++

  1. (−): Not observed; (+): Focal or scarce; (++): Frequent; (+++): Very frequent.
  2. EM: electron microscopy; OM: optic microscopy.