肝再生终止阶段的研究进展

Current status of research on liver regeneration

The liver has a strong regenerative potential, and liver regeneration shows different ways according to the degree of liver injury. The current research on liver regeneration has achieved some promising results, and the cellular and molecular mechanism of liver regeneration has been deeply studied. Recently, the role of biomechanical factors in liver regeneration is gradually attracting attention. In addition to the proliferation of liver cells, liver regeneration also involves the proliferation and differentiation of hepatic stem cells. However, the exact mechanism of liver regeneration is not fully clear. This review will summarize the relevant studies on liver regeneration to discuss the current research status of liver regeneration, with regard to the liver regeneration model, cellular and molecular mechanism of liver regeneration, the effects of mechanical factors on regeneration, and the role of stem cells in liver regeneration. A better understanding of liver regeneration will provide a new avenue for the clinical diagnosis and treatment of liver related diseases.

Relationship between insulin/insulin-like growth factor and liver regeneration

Hepatocellular carcinoma is one of the most common cancers, and the main treatments include intervention, radiofrequency ablation, surgical resection and liver transplantation. Metastasis and recurrence contribute greatly to the high mortality rate of hepatocellular carcinoma. Currently, many efforts have been taken to find the ways to promote liver regeneration after liver resection. This article will discuss the relationship between liver regeneration and insulin/insulin-like growth factor.

Expression of Hippo signaling molecules in gastric carcinogenesis

AIM: To observe the expression of Mst1, Lats1 and YAP1 in normal gastric mucosa, chronic atrophic gastritis with intestinal metaplasia, dysplasia and gastric cancer.

METHODS: Immunohistochemistry was used to investigate the expression of Mst1, Lats1 and YAP1 in 30 cases of normal gastric musoca, 60 cases of chronic atrophic gastritis with intestinal metaplasia, 60 cases of dysplasia, and 60 cases of gastric cancer.

RESULTS: The positive rates of Mst1 and Lats1 expression in gastric cancer were significantly lower than those in the normal control group, intestinal metaplasia group, and dysplasia group (Mst1: P = 0.000, 0.001, 0.007; Lats1: P = 0.006, 0.002, 0.004). Mst1 and Lats1 expression showed a decreasing trend from the normal gastric mucosa to dysplasia. The positive rate of Yap1 expression in gastric cancer was significantly higher than those in the normal control group, intestinal metaplasia group, and dysplasia group (P = 0.006, 0.002, 0.004), and Yap1 expression showed an increasing trend from the normal gastric mucosa to dysplasia. The positive rates of Mst1, Lats1 and Yap1 expression had a close correlation with tumor differentiation and lymph node metastasis (P = 0.007, 0.028, 0.007; P = 0.014, 0.009, 0.013). The positive rate of Yap1 expression had a negative correlation with those of Mst1 and Lats1 expression in gastric caner (r = -0.715, -0.642), while Mst1 expression had a positive correlation with Lats1 expression (r = 0.702).

CONCLUSION: The Hippo signaling pathway may play an important role in the development of gastric cancer.