Degang Dong

Lactobacillus is one of the bacteria strains which has been widely used in human life, has valuable probiotic properties. In the present study, L. reuteri FLRE5K1 was isolated from healthy mouse kidney and tested for its anti-melanoma activity in cell assays and animal models. The results showed that L. reuteri FLRE5K1 could significantly reduce the incidence of melanoma from 70 % to 30 % and significantly prolonged the survival of tumor-bearing mice. Despite of its significant effect on melanoma prevention, the tumor mass remained uneliminated. The alanine aminotransferase (ALT) level remained normal in tumor-bearing mice with intragastric administration of L. reuteri FLRE5K1, indicating that L. reuteri FLRE5K1 could prevent melanoma cells from damaging the liver. Cell assays showed that melanoma cells were inhibited by serum from mice with intragastric administration of L. reuteri FLRE5K1, but not by the bacteria itself. Further examination revealed that the levels of TNF-α and INF-γ in this serum were significantly increased. In summary, it was speculated that L. reuteri FLRE5K1 could stimulate the body to produce anti-cancer cytokines, inhibit the migration and colonization of melanoma cell line B16-F10, so as to prevent the onset of melanoma and prolong the survival of mice. The experiment was a useful complement to functional studies of endogenous probiotics and provided theoretical data support for the development of new microbioecologics.

BACKGROUND: Snakebites remain a major life-threatening event worldwide. It is still difficult to make a positive identification of snake species by clinicians in both Western medicine and Chinese medicine. The main reason for this is a shortage of diagnostic biomarkers and lack of knowledge about pathways of venom-induced toxicity. In traditional Chinese medicine, snakebites are considered to be treated with wind, fire, and wind-fire toxin, but additional studies are required. METHODS: - and wind-fire toxin - four cases of bites by vipers and three bites by cobras. Serum protein quantification was performed using LC-MS/MS. Differential abundance proteins (DAPs) were identified from comparison of snakebites of each snake species and healthy controls. The protein interaction network was constructed using STITCH database. RESULTS: Principal component analysis and hierarchical clustering of 474 unique proteins exhibited protein expression profiles of wind-fire toxins that are distinct from that of fire toxins. Ninety-three DAPs were identified in each snakebite subgroup as compared with healthy control, of which 38 proteins were found to have significantly different expression levels and 55 proteins displayed no expression in one subgroup, by subgroup comparison. GO analysis revealed that the DAPs participated in bicarbonate/oxygen transport and hydrogen peroxide catabolic process, and affected carbon-oxygen lyase activity and heme binding. Thirty DAPs directly or indirectly acted on hydrogen peroxide in the interaction network of proteins and drug compounds. The network was clustered into four groups: lipid metabolism and transport; IGF-mediated growth; oxygen transport; and innate immunity. CONCLUSIONS: Our results show that the pathways of snake venom-induced toxicity may form a protein network of antioxidant defense by regulating oxidative stress through interaction with hydrogen peroxide.

In this study, we aimed to investigate the role of miR-877-5p in the malignant phenotypes of prostate cancer (PCa) cells and its underlying mechanism. RT-qPCR analysis was performed to examine the expression of miR-877-5p and sperm-specific antigen 2 (SSFA2) in PCa tissues and cells. Cell counting kit-8 (CCK-8) assay, 5-ethynyl-20-deoxyuridine (EdU) assay, flow cytometry, wound-healing assay, and Transwell invasion assay were performed to determine the functional roles of miR-877-5p in PCa cells. The association of miR-877-5p with SSFA2 was determined by luciferase reporter and RNA pull-down assays. In this study, we found that the expression level of miR-877-5p was decreased in PCa tissues and cells. Functionally, overexpression of miR-877-5p exerted tumor suppressor properties in PCa cells. Mechanistically, SSFA2 was identified as a target gene of miR-877-5p, while overexpression of SSFA2 could abrogate the anti-tumor effects of miR-877-5p in PCa cells. These findings demonstrated that miR-877-5p/SSFA2 axis functioned as a potential target for PCa treatment.

目的: 探究健身气功·八段锦对痰湿壅盛型高血压患者的干预作用。方法: 将47例壅盛型高血压患者随机分为八段锦组和对照组,其中八段锦组23例,对照组24例。经16周八段锦锻炼,分别检测患者血压,观察中医体质评分变化;取血检测血液流变学指标,以及血浆MDA、SOD、ET-1、Hcy水平。结果: 与对照组比较,经16周八段锦干预后,八段锦组舒张压与收缩压均有所降低(P＜0.05或P＜0.01),中医体质评分减少;全血粘度明显的降低(P＜0.05或P＜0.01);血浆SOD活性显著升高(P＜0.05),血浆MDA和ET-1水平显著降低(P＜0.05或P＜0.01),Hcy水平无显著差异,但试验后高Hcy人数有所减少。结论: 八段锦作为一种非药物的传统运动干预手段,能改善痰湿壅盛型高血压患者体质,可作为壅盛型高血压患者的日常辅助干预方法。.