Research advances in the pathogenesis of pyrrolizidine alkaloid-induced hepatic sinusoidal obstruction syndrome / 临床肝胆病杂志

Pyrrolizidine alkaloid-induced hepatic sinusoidal obstruction syndrome (PA-HSOS) is a type of hepatic sinusoidal obstruction syndrome mainly caused by the intake of Chinese herbal medicine or food containing pyrrolizidine alkaloids. This article reviews the recent research advances in the mechanism of action of pyrrolizidine alkaloids and their metabolites in disease development and progression from the aspects of drug factors, host factors, and influencing factors. It is pointed out that PA-HSOS has complex pathogenesis and various influencing factors, and some patients tend to have a poor prognosis; its pathogenesis remains unclear and needs further in-depth studies.

Research progress on the protective mechanism of resveratrol on alcoholic liver disease / 中国医师杂志

The causes of more than 200 diseases are related to alcoholism, which can cause diseases in all systems of the body. As the place of alcohol absorption and metabolism, the damage of gastrointestinal tract and liver caused by excessive drinking can not be ignored. Alcohol can produce strong hepatotoxicity, resulting in intestinal microbial disorders. Resveratrol is a kind of natural polyphenols which widely exist in grapes, peanuts, nuts and other foods. It has many functions that are beneficial to human health, such as liver protection. Therefore, we reviewed the mechanism of the protective effect of resveratrol on alcoholic liver disease and proposed that intestinal microorganisms could be a potential research target for resveratrol in the prevention of alcoholic liver disease.

Baicalin induces ferroptosis in bladder cancer cells by downregulating FTH1

Ferroptosis is a non-apoptotic regulated cell death caused by iron accumulation and subsequent lipid peroxidation. Currently, the therapeutic role of ferroptosis on cancer is gaining increasing interest. Baicalin an active component in

Study on the cisplatin-sensitization effect of tripterygium glycosides on cisplatin-resistant human epithelial ovarian cancer cells (SKOV3/DDP) in vitro / 中国临床药理学与治疗学

AIM:To study the cisplatin-sensitization effect and mechanism of tripterygium glycosides on cisplatin-resistant human epithelial ovarian cancer cells (SKOV3/DDP).METHODS:The SKOV3/DDP cells in exponential phase of growth were randomly divided into eight groups:blank control group,10 μg/mL DDP group,50 μg/mL GTW group,800 μg/mL GTW group,3 200 μg/mL GTW group,10 μg/mL DDP + 50 μg/mL GTW group,10 μg/mL DDP + 800 μg/mL GTW group and 10 μg/mL DDP + 3 200 μg/mL GTW group.Cell counting kit 8 and flow cytometry and western blot were used to detect the growth inhibiting rate and apoptosis rate and relative expression of GST-π,MDR1,STAT3,p-STAT3 of SKOV3/DDP cells of every group.RESULTS:DDP and GTW produce an additive effect when used concurrently in inhibiting growth of SKOV3/DDP cells.800 μg/mL GTW or 3 200 μg/mL GTW combined with 10 μg/mL DDP can significantly induce apoptosis of SKOV3/DDP cells and downregulate the expression of p-STAT3 (P ＜ 0.05).CONCLUSION:GTW can significantly enhance sensitivity of SKOV3/DDP cells to DDP.The underlying mechanism may be related with down-regulating the expression of p-STAT3 in STAT3 pathway.

Effect of C-fos antisense oligodeoxynucleotide-induced activation of Caspase 3 on inducing apoptosis of human hepatocellular carcinoma HepG2 cells / 解放军医学杂志

Objective Proliferation and apoptosis play a major role in the development of tumor cells,and the intranuclear transcriptional factor c-fos is significantly up-regulated in the primary hepatocellular carcinoma and involved in early carcinogenesis.The purpose of the present study is to investigate the apoptotic effect of c-fos antisense oligodeoxynucleotide(ASO) on human hepatocellular carcinoma HepG2 cells and the participation of Caspase3 in this process.Methods Cell culture,Hoechst 33258 staining,real-time PCR and Western blotting were used in present study.Cultured HepG2 cells were divided into 3 groups: 1) control group: cultured with 10?l saline;2) sense oligodeoxynucleotide(SO,used as a negative control) treated group: co-cultured with 10?l SO(5?g/?l);3) ASO treated group: co-cultured with ASO 10?l(5?g/?l).The subsequent experiments were performed 1h after cultivation for each group.Hoechst 33258 staining was performed to detect the apoptosis by observing the staining of nuclear chromatin.Real-time PCR and Western blotting were used respectively to detect the expression of Caspase 3 at mRNA and protein levels after different treatments.Results Hoechst 33258 staining revealed that the nuclei of HepG2 cells showed diffuse and adqulis fluorescence in control and SO-treated groups,while dense and dark fluorescence was observed in ASO-treated group,which indicated that c-fos ASO had significantly induced apoptosis of HepG2 cells.The expression of Caspase 3 in ASO group was enhanced both at mRNA and protein levels compared to that in control groups.Conclusions C-fos ASO significantly induces apoptosis in human hepatocellular carcinoma HepG2 cells,as shown by Hoechst 33258 staining and higher expression of Caspase 3 mRNA and protein.Moreover,Caspase 3 activation is involved and probably plays an important role in c-fos ASO-induced apoptosis of HepG2 cells.