No abstract available.
Candida albicans* ; Candida* ; Dentures* ; Detergents*

Aryl hydrocarbon receptor (AHR) is a ligand-activated transcription factor, which can be ac-tivated by the binding of exogenous atyl hydrocarbon chemicals, then increase many metabolic enzymes and their activity, and oncogenic products of metabolism increase, ultimately resulting in occurrence of tumor. Herein, we mainly review the fundamental concept of AHR and its relationship with tumor.

β-Amyrin synthase (β-AS) genes of Glycyrrhiza uralensis from 6 different regions were analyzed by PCR-SSCP and sequenced, then the correlationship between β-AS SNP and regions of Glycyrrhiza uralensis were determined. According to the 1 coding single nucleotide polymorphism on the first exon of β-AS gene at 94 bp site, Glycyrrhiza uralensis could be divided into 3 genotypes. In these genotypes, the percentage of 94A type in genuine regions was much higher, and it had significant differences with the percentage in non-genuine regions (P < 0.001). The results of the experiment proved that different β-AS genotypes at 94 bp site from different regions may be one of the important reasons to result in the genuineness of Glycyrrhiza uralensis.
Exons ; Genotype ; Glycyrrhiza uralensis ; classification ; enzymology ; genetics ; Intramolecular Transferases ; genetics ; Plant Proteins ; genetics ; Polymorphism, Single Nucleotide ; Polymorphism, Single-Stranded Conformational

OBJECTIVETo investigate the preventive and therapeutic effects of Xiaobanxia Fuling Decoction (XBFD) on cisplatin-induced pica rats and to study its mechanism.

METHODSForty-two male Sprague-Dawley rats were randomly divided into the following 7 groups, i.e., the blank control group, the model group, the high-, middle-, and low-dose XBFD groups (at the daily dose of 30, 15, and 7. 5 g/kg, respectively), the aprepitant (at the daily dose of 13 mg/kg), and pure Chinese medicine group (at the daily dose of XBFD 15 g/kg), 6 in each group. On the 3rd day of this study, 3 mg/kg cisplatin was intraperitoneally injected to rats except the blank control group and the model group to establish the pica rat model. The consumptions of kaolin, food, and the general situation of rats were observed. The protein and mRNA expressions of neurokinin 1 receptor (NK1R) in both the medulla oblongata and the gastric antrum were measured by immunohistochemical assay and Real-time fluorescent quantitative PCR respectively on the sixth day of this study.

RESULTSOn the third, fourth, and fifth day of this study, the consumption of kaolin of rats significantly increased when compared with the blank control group (P<0.01). Compared with the model group, the consumption of kaolin significantly decreased in the high-, middle-, and low-dose XBFD groups on the third, fourth, and fifth day of this study (P<0.05). The food intake of rats in the high-dose XBFD groups significantly increased when compared with the model group on the third day of this study (P<0.05). The protein and mRNA expressions of NK, R in the medulla oblongata and the gastric antrum significantly decreased in the high- and middle-dose XBFD groups when compared with the model group (P<0.05).

CONCLUSIONSXBFD could prevent and treat cisplatin-induced pica in rats. Its effect might be correlated with decreasing expressions of NK, R in the medulla oblongata and the gastric antrum.

Animals ; Cisplatin ; adverse effects ; Drugs, Chinese Herbal ; therapeutic use ; Male ; Pica ; chemically induced ; drug therapy ; prevention & control ; RNA, Messenger ; genetics ; Rats ; Rats, Sprague-Dawley ; Receptors, Neurokinin-1 ; metabolism

This study is to establish an HPLC-DAD-ELSD method for simultaneous determination of 5 flavones and saponins in Rhizoma Anemarrhenae including neo-mangiferin, mangiferin, timosaponin B II, timosaponin B III and timosaponin A III. Samples were analyzed on a Merck Purospher STAR column(4.6 mm x 250 mm, 5 μm). The mobile phase consisted of acetonitrile( A) and 0. 1% formic acid (B) with gradient elution at a flow rate of 1.0 mL · min(-1). The column temperature was set at 40 °C. The DAD detector wavelength was set at 254 nm. The ELSD conditions were as follows: the nebulizing gas flow rate was 2.0 L · min(-1) and temperature of drift tube was 105 °C. The volume was 10 μL. The five compounds were well separated with good linear correlations. The mean recoveries were between 102.0%-104.0%. This method was quick and reliable which provides a foundation for quality control of R. Anemarrhenae.
Anemarrhena ; chemistry ; Chromatography, High Pressure Liquid ; instrumentation ; methods ; Drugs, Chinese Herbal ; analysis ; Flavones ; analysis ; Rhizome ; chemistry ; Saponins ; analysis

Animals ; Cardiomegaly ; Constriction ; Heart ; Mice

Objective To explore the effect of the the situation-background-assessment-recommendation (SBAR) communication technique on critical thinking disposition of undergraduate nursing students.Methods Thirty-two undergraduate nursing students were randomly divided into test group (n =16) and control group (n =16).The control group adopted conventional teaching methods.The test group were asked to carry out the SBAR communication technique based on conventional teaching methods.Then critical thinking ability of the two group students were investigated in early practical and final practical stage respectively by adopting Critical Thinking Disposition Inventory-Chinese Version (CTDI-CV).Results There were no statistically significant differences in terms of CTDI-CV scores and each dimension score in early practice between the two groups (P ＞ 0.05).In control group,no significant differences were found in terms of CTDI-CV scores and each dimension scores between early and final practice stage (P ＞0.05).In test group,CTDI-CV score of students in final practice [(334.13 ± 35.47) vs (276.65 ±43.73)] and dimension scores such as the ability of truth seeking [(48.72 ±8.47) vs (37.61 ±6.54)],analyticity [(47.63 ± 10.93) vs (37.92 ±4.98)],critical thinking self-confidence [(48.42 ± 11.64) vs (39.02 ±4.87)],maturity of judgment [(48.07 ±9.54) vs (35.81 ±5.88)] were significantly higher than that of students in early practice (P <0.05).And it was also higher than that of control group students in final practice stage (t =-1.746,-3.928,-1.922.-1.927,-2.666,respectively;P ＜ 0.05).Conclusions The SBAR communication technique is helpful to enhance the critical thinking ability of undergraduate nursing students.

Acquired Immunodeficiency Syndrome ; transmission ; China ; HIV Infections ; transmission ; Humans ; Models, Theoretical

OBJECTIVETo construct two recombinant plasmids of mdr1 and mcl1 shRNA, and to investigate their reversal effect on drug resistance in K562 adriamycin resistant cell lines (K562/A02).

METHODSTwo oligonucleotides of mdr1 and mcl1 gene were designed referring to that of GenBank, double-stranded DNA was derived through annealing, and cloned into pRNAT vector digested by two restricted endoenzymes. K562/A02 cells were transfected with the recombinant plasmids. The mdr1 mRNA expression and its protein product P-glycoprotein (P-gp) were detected by RT-PCR and flow cytometry. The expression of mcl1 gene was detected by RT-PCR. 50% inhibition concentration (IC50) of adriamycin (ADM) on K562/A02 cells was determined by MTT method. Cells apoptosis was analyzed by flow cytometry.

RESULTSComparing with K562/A02 cells, the shRNA of mdrl or mcl1 gene in vitro can remarkably increase the sensitivity of K562/A02 to adriamycin, down-regulate mdr1 or mcl1 gene expression, increase the K562/A02 cells apoptosis rates induced by adriamycin. Cotransfection of mdrl and mcl1 genes shRNA can also down-regulate the expression of their gene, more remarkably increase the sensitivity and apoptosis of K562/ A02 to adriamycin.

CONCLUSIONTransfection of mdrl or mcl1 gene shRNA can promote the sensitivity of K562/A02 to adriamycin and cotransfection of the two shRNA can more remarkably do so. The mel1 gene might be involved in adriamycin resistant in K562/A02 cells.

ATP-Binding Cassette, Sub-Family B, Member 1 ; biosynthesis ; genetics ; Apoptosis ; Drug Resistance, Multiple ; genetics ; Drug Resistance, Neoplasm ; genetics ; Flow Cytometry ; Gene Expression ; Humans ; K562 Cells ; Myeloid Cell Leukemia Sequence 1 Protein ; Neoplasm Proteins ; biosynthesis ; genetics ; Proto-Oncogene Proteins c-bcl-2 ; biosynthesis ; genetics ; RNA Interference ; RNA, Messenger ; genetics ; Reverse Transcriptase Polymerase Chain Reaction ; Transfection

This study aims to analyze the molecular epidemiological characteristics of HIV-1 strains prevailing among men who have sex with men (MSM) in Beijing, China. The pol gene fragments from 250 newly diagnosed HIV-1-infected MSM individuals during 2006-2010 in Beijing were amplified by RT-nested PCR, sequenced, and phylogenetically analyzed. HIV-1 pol gene from 189 individuals were amplified and analyzed; 81 (42. 9%), 3 (1. 6%), 2 (1.0%), 88 (46. 6%), and 15 (7.9%) individuals were infected with HIV-1 subtypes B, B', C, CRF01_AE, and CRF07_BC, respectively. The subtypes B and CRF01_AE could both be grouped into two clusters, and CRFO7_BC strains shared high homology and were presumed to originate from a common ancestor. The HIV-1 circulating in MSM in Beijing had a lower genetic diversity than in heterosexuals. The HIV-1 epidemic (2006-2010) in MSM in Beijing was actually a rapid spread of HIV-1 CRF01 AE and B, or rather native strains of the two viruses.
Adult ; China ; epidemiology ; Epidemics ; Genetic Variation ; HIV Infections ; diagnosis ; epidemiology ; virology ; HIV-1 ; classification ; genetics ; isolation & purification ; Homosexuality, Male ; statistics & numerical data ; Humans ; Male ; Middle Aged ; Molecular Epidemiology ; Molecular Sequence Data ; Phylogeny ; Young Adult