Peculiarities of liver regeneration in Chinese hamster <Emphasis Type="Italic">Cricetulus griseus</Emphasis> |
| |
Authors: | G A Sakuta E V Baidyuk A A Zhumagalieva B N Kudryavtsev |
| |
Institution: | 1.Institute of Cytology,Russian Academy of Sciences,St. Petersburg,Russia |
| |
Abstract: | With the aid of cytofluorimetry and interference microscopy, the ploidy level and the hepatocyte ploidy class distribution
were studied and the dry mass of hepatocytes was measured in hepatocytes in liver of Chinese hamsters Cricetulus griseus and of Balb/c mice before and one month after partial hepatectomy. The mean ploidy level in hepatocytes of the Chinese hamster
normal liver amounted to 2.35 ± 0.03 c. The modal class was mononuclear hepatocytes with diploid nuclei (82.4 ± 1.3%). The
mean dry mass of hepatocytes amounted to 605.2 ± 4.8 pg. In the process of liver regeneration in the Chinese hamsters, the
ratio of ploidy classes and the hepatocyte dry mass did not change. After a similar liver resection in the mice, a significant
polyploidization of liver parenchyma occurred. The mean ploidy level in hepatocytes rose by 32%. Instead of 4cx2-hepatocytes,
the modal class became mononuclear octaploid cells the relative portion of which increased, on average, by five times. The
portion of binuclear hepatocytes with octaploid nuclei in mouse liver rose by more than five times. Thus, in the Chinese hamsters
Cricetulus griseus, unlike mice, regeneration of liver occurred exclusively at the expense of proliferation of hepatocytes. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|