p53 and P-glycoprotein influence chemoresistance in hepatocellular carcinoma.

Chemoresistance is a critical obstacle to the treatment of hepatocellular carcinoma (HCC). The mechanisms underlying resistance to doxorubicin, cisplatin, and 5-fluorouracil involve p53 and P-glycoprotein (P-gp). p53 plays a role in cell growth; therefore, resistance mechanisms involve chemotherapy-induced apoptosis and p53 mutation and inactivation.

High conversion efficiency in resonant four-wave mixing processes.

We propose a new scheme of the resonant four-wave mixing (FWM) for the frequency up or down conversion, which is more efficient than the commonly-used scheme of the non-resonant FWM. In this new scheme, two control fields are spatially varied such that a probe field at the input can be converted to a signal field at the output. The efficiency of probe-to-signal energy conversion can be 90% at medium's optical depth of about 100.

Role of microRNAs in metastasis of non-small cell lung cancer.

Lung cancer causes the most number of deaths from cancer. Non-small cell lung cancer (NSCLC), including squamous cell carcinoma, large cell carcinoma, and adenocarcinoma, is responsible for more than 80% of primary lung cancer cases. As metastasis is the main cause of death, understanding the mechanisms underlying NSCLC metastasis are essential for improving the treatment of this disease.

Curtobacterium flaccumfaciens pv. beticola, A New Pathovar of Pathogens in Sugar Beet.

Bacterial leaf spot of sugar beet was first discovered in 1995 in Inner Mongolia of China. The pathogen was shown to be a bacterium with properties of gram-positive bacteria: small irregular rods, lateral flagella, aerobic, and catalase-positive. The colonies of sugar beet strains produced a pale-yellow pigment.

[RAPD analysis of plant pathogenic coryneform bacteria].

RAPD analysis was used for the taxonomy of plant pathogenic coryneform bacteria, especially for the classification of two new pathogens (Curtobacterium flaccumfaciens pv. basellae pv. nov.