Emodin Exerts an Antiapoptotic Effect on Human Chronic Myelocytic Leukemia K562 Cell Lines by Targeting the PTEN/PI3K-AKT Signaling Pathway and Deleting BCR-ABL.

The BCR-ABL kinase inhibitor, imatinib mesylate, is the front-line treatment for chronic myeloid leukemia, but the emergence of imatinib resistance has led to the search for alternative drug treatments. There is a pressing need, therefore, to develop and test novel drugs. Natural products including plants, microorganisms, and halobios provide rich resources for discovery of anticancer drugs.

Downregulation of cell cycle-related proteins in ovarian cancer line and cell cycle arrest induced by microRNA.

Objective: The effect of miR-449 and miR-34 on the growth, cell cycle and target gene expressions of ovarian cancer cell line SKOV3 and SKOV3-ipl was discussed.

Method: Real-time quantitative reverse transcription PCR was employed to detect the expressions of miR-449a/b and miR-34b, c in SKOV3 and SKOV3-ipl cells. The two miRNAs were successfully expressed in SKOV3-ipl cells by transfection.

[Effects of different types of litters on soil organic carbon mineralization].

Using litter incubation experiment in laboratory, decomposition discrepancies of four typical litters from Zijin Mountain were analyzed. The results show that organic carbon mineralization rates of soil with litters all involve fast and slow decomposition stages, and the differences are that the former has shorter duration,more daily decomposition quantity while the latter is opposite. Organic carbon mineralization rates of soil with litters rapidly reached maximum in the early days of incubation, and the order is soil with Cynodon dactylon litter (CK + BMD) (23.

[Study on effect of Tiaomaiyin injection on experimental arrhythmia].

Objective: To study the effect of Tiaomaiyin injection on the experimental arrhythmia for analyzing its underlying mechanism in the treatment of cardiovascular disease.

Method: Experimental animals anesthetized with 20% urethane (6 mL x kg(-1)) were evenly randomized into control group, positive control group, low-dose and high-dose Tiaomaiyin group. The rate of ventricular fibrillation (VF) chloroform-induced in mice, and the epoch of ventricular extrasystole (VE), ventricular tachycardia (VT),VF and cardiac arrest (CA), actonitine-induced in rats (1.

[The morphologic features of endometrial stromal sarcoma and its metastases].

Objective: To study the morphologic feature, immunohistochemistry phenotype of ESS and its metastases, with emphasis on the histogenesis, tumor differentiation and diagnostic criteria.

Methods: The pathologic features of 15 cases and 4 metastases were studied. The immunohistochemical study was performed on selected sections by a panel of antibodies including CD10, smooth muscle actin, estrogen and progesterone receptors, keratin (AE1/3) and alpha-inhibin.

[Experimental study on cardiac protection and anti-oxidation effects of jisheng injection].

Objective: To observe the effect of Jisheng injection (JSI) in protecting heart.

Methods: Isolated heart of rat was preserved in modified Euro-Collins solution (mEC) containing JSI for 20 hrs, and that preserved in simple mEC was taken as control. Then Langendorff isolated rat heart perfusion was conducted.