Abstract
This study was undertaken in rats to clarify the mechanisms and time necessary for recovery from vacuolation in liver cells. Vacuoles were produced by congestion of the liver due to constriction of the inferior vena cava just below the diaphragm, and changes in vacuoles were examined quantitatively and qualitatively until 24 h after release of the constriction. Vacuoles in liver cells decreased in number by half within 5 min after recovery from congestion. The remaining vacuoles metamorphosed to hyaline globules by condensation of the contents. The number of hyaline globules increased with a peak occurring at 3-6 h after recovery from congestion, although the number of vacuoles decreased gradually. Only a few small vacuoles and hyaline globules were found in liver cells in pericentral areas at 24 h after recovery from congestion. These data indicate that vacuoles may be discharged promptly from the liver cell cytoplasm after recovery from congestion, and the remaining vacuoles may metamorphose to hyaline globules by condensation of the contents and finally fade into the cytoplasm.
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