Effect of TP53 rs1042522 on the susceptibility of patients to oral squamous cell carcinoma and oral leukoplakia: a meta-analysis.

Background: There are different and inconsistent conclusions regarding the genetic relationship between the human tumor suppressor p53 (TP53) rs1042522 polymorphism and the risk of oral squamous cell carcinoma (OSCC) and oral leukoplakia (OL). Therefore, the aim of the study was to comprehensively reassess this association through the performance of an updated meta-analysis.

Methods: After searching the available databases, we systematically screened and included the eligible case-control studies, which contain the full genotype frequency data of the TP53 rs1042522 polymorphism for both OSCC/OL patients and the negative control groups.

Inhibition of Bcl-2 potentiates AZD-2014-induced anti-head and neck squamous cell carcinoma cell activity.

Mammalian target of rapamycin (mTOR) is a therapeutic target for head and neck squamous cell carcinoma (HNSCC). Here, we evaluated the activity of AZD-2014, a potent mTOR complex 1/2 (mTORC1/2) dual inhibitor, against HNSCC cells. We showed that AZD-2014 blocked mTORC1/2 activation in established and primary human HNSCC cells, where it was anti-proliferative and pro-apoptotic.

[The preliminary study of the use of MRI navigation in identifying the safe surgical margin of the maxillofacial malignancy].

Objective: To evaluate the feasibility of MRI navigation in identifing the safe surgical margin of the maxillofacial malignancy.

Methods: The pathology results of the surgical margin identified by the technique of MRI navigation form 20 patients with maxillofacial malignancy were compared with those of 45 patients with maxillofacial malignancy who underwent the routine operation without MRI navigation.

Results: There was no difference between the two groups of patients in age, sex, size of tumor, tumor stages, pathologic diagnosis (P > 0.

The therapeutic effects of tectorigenin on chemically induced liver fibrosis in rats and an associated metabonomic investigation.

The aim of this study was to investigate the effects of tectorigenin on chemically induced liver fibrosis in rats. Liver fibrosis was induced in rats with carbon tetrachloride, a diet high in fat, cholesterol and alcohol in the drinking water. Our results indicate that tectorigenin treatment significantly inhibited the increases in the activities of alanine aminotransferase (ALT), aspartate aminotransferase (AST) and the increases in the serum levels of hyaluronate (HA), laminin (LN) and procollagen III N-terminal peptide (PIIIP); tectorigenin treatment also significantly inhibited the increases in the amount of collagen in the livers of the fibrogenic rats.

[Comparative study of clinical efficacy between surgery by intraoperative MRI navigation versus traditional surgical resection for malignancy of parapharyngeal space].

Objective: To investigate the clinical efficacy between mobile intraoperative magnetic resonance imaging (iMRI) navigation with a high field strength and routine surgical resection for malignancy of parapharyngeal space.

Methods: The surgical efficacy indexes of patients at our hospital during the time range from February 2010 to February 2011 were compared between two groups consisting of 29 or 42 individuals undergoing surgery with the assistance of the technique of iMRI navigation with a high field strength 1.5T or routine operation.

Polo-like kinase 1 is overexpressed in colorectal cancer and participates in the migration and invasion of colorectal cancer cells.

Background: Polo-like kinase 1 (PLK1) is an important molecule in proliferation of many human cancers. The aim of study is to clarify the expression patterns and potential function of PLK1 in colorectal cancers.

Material/methods: Fifty-six colorectal cancers samples were collected and arranged onto a tissue array and the expression of PLK1 were detected by immunohistochemistry and correlated with clinico-pathological characteristics and expression of PCNA.

Trichothecin induces apoptosis of HepG2 cells via caspase-9 mediated activation of the mitochondrial death pathway.

Trichothecin, one of fungal toxins which were encountered in food and in the environment, seriously threatens human and animal health. It has been shown that trichothecin changed the morphology of cellular mitochondria. However, the molecular mechanism remains unknown.

Fully substituted unsaturated lactones from endophytic Myrothecium sp.

Two new α,β-unsaturated γ-lactones, myrolactones A (1) and B (2), were characterized from the culture broth of the Myrothecium sp. IFB-E106 isolated from the roots of Vatica mangachapoi Blauco. The absolute configuration was determined by the computational electronic circular dichroism approach.

Neuraminidase inhibitory polyketides from the marine-derived fungus Phoma herbarum.

Two new polyketides, arthropsadiol C (1) and massarilactone H (2), together with six known derivatives (3-8) were isolated from the culture broth of the marine-derived fungus Phoma herbarum. Their structures were elucidated on the basis of spectroscopic methods, including 2D NMR techniques. Compounds 2, 4, 5, and 8 showed moderate neuraminidase inhibitory activity with IC(50) values ranging from 4.

N-(3,5-Dimeth-oxy-phen-yl)benzamide.

The title compound, C(15)H(15)NO(3), was prepared by stirring benzoyl chloride with 3,5-dimeth-oxy-aniline in dioxane at ambient temperature. The dimeth-oxy-phen-yl-amide segment of the mol-ecule is almost planar, with a C-N-C=O torsion angle of -4.1 (4)°.

Neuraminidase inhibitory terpenes from endophytic Cochliobolus sp.

The chemical study of endophytic fungus of Cochliobolus led to the isolation of 10 terpenes (1-10), including one new compound named isocochlioquinone B (1). Their structures were elucidated on the basis of spectroscopic methods, including 2D NMR techniques. Compounds 5-7 showed significant neuraminidase inhibitory activity with IC(50) values of 0.

[Influence of silencing Polo-like kinase 1 on migration and invasion of colorectal cancer cells].

Objective: To examine the role of Polo-like kinase 1(PLK1) in the migration and invasiveness of human colorectal cancer cells.

Methods: Nine colorectal cancer cell lines were cultured. Cell lines with the highest level of PLK1 expression was selected by PCR and Western blot.

Bioactive alkaloids from the plant endophytic fungus Aspergillus terreus.

One new alkaloid, named 16 alpha-hydroxy-5 N-acetylardeemin ( 1), along with seven known metabolites ( 2- 8) was isolated from the fermentation broth of an endophytic fungus, ASPERGILLUS TERREUS. The structures of these metabolites were assigned on the basis of detailed spectroscopic analysis and by comparing spectroscopic data with those in the literature. Compound 1 displayed an inhibitory effect against acetylcholinesterase.