In order to prepare an experimental model on the basis of morphological changes of liver, 90 rabbits were allocated into four groups and 5,15,30 and 50% of ethanol (5㎖/day) were dosed to each group for 5,10,20,30,60 and 90 days, and observed the livers with light and electron microscope. The results obtained are summarized as follows :
1. Light microscopically, the hydropic changes were found in the liver from 10th day after 5% and 15% ethanol ingestion, and these findings were remarkable as time goes by. Necrosis of hepatocytes, however, was most remarkable on 60th and 90th day after ingestion. The proliferation of interlobular connective tissue was found from 30th day in this group.
2. The hydropic necrosis of liver cells was found from 5th day in 30% and 50% ethanol dosing groups. The proliferation of interlobular connective tissues and infiltration of the lymphocytes were observed from 30th day in 30% ethanol ingestion group, however, it was found from 20th day in 50% ethanol ingestion group.
3. Electron microscopically, the appearance of various lipid droplets and dilated rER, slightly increased sER and glycogen field, dense mitochondria with scanty cristae and hydropic change were observed on 5th day after 5% ethanol ingestion. These findings were more remarkable on 30th and 90th day. Especially, disorganized outer and inner membrane of mitochondria and autophagic vacuoles were appeared on 90th day. The simitar findings were also found in 15%, 30% and 50% ethanol ingestion groups, however, the appearance of fibrillar and myelin-like structures were observed from 30th day after 15% ethanol ingestion, The severe hydropic change and increased sER were observed on 90th day after 15% ethanol ingestion. From 5th day after 30% and 50% ethanol ingestion these findings 77ere more remarkable.
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