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  • Title: Impaired liver regeneration is associated with reduced cyclin B1 in natural killer T cell-deficient mice.
    Author: Ben Ya'acov A, Meir H, Zolotaryova L, Ilan Y, Shteyer E.
    Journal: BMC Gastroenterol; 2017 Mar 23; 17(1):44. PubMed ID: 28330461.
    Abstract:
    BACKGROUND: It has been shown that the proportion of natural killer T cells is markedly elevated during liver regeneration and their activation under different conditions can modulate this process. As natural killer T cells and liver injury are central in liver regeneration, elucidating their role is important. METHODS: The aim of the current study is to explore the role of natural killer T cells in impaired liver regeneration. Concanvalin A was injected 4 days before partial hepatectomy to natural killer T cells- deficient mice or to anti CD1d1-treated mice. Ki-67 and proliferating cell nuclear antigen were used to measure hepatocytes proliferation. Expression of hepatic cyclin B1 and proliferating cell nuclear antigen were evaluated by Western Blot and liver injury was assessed by ALT and histology. RESULTS: Natural killer T cells- deficient or mice injected with anti CD1d antibodies exhibited reduced liver regeneration. These mice were considerably resistant to ConA-induced liver injury. In the absence of NKT cells hepatic proliferating cell nuclear antigen and cyclin B1 decreased in mice injected with Concanvalin A before partial hepatectomy. This was accompanied with reduced serum interleukin-6 levels. CONCLUSIONS: Natural killer T cells play an important role in liver regeneration, which is associated with cyclin B1 and interleukin-6.
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