Background and purpose:Triple-negative breast cancer (TNBC) possesses high risk of relapse and metastasis. Clinically, there are no speciifc targeted-therapies to TNBC except chemotherapy. Therefore, studying the mechanism of relapse and metastasis has signiifcance to improve the patients’ survival rate. This experiment aimed to study the effect of MAPK activation on migration and invasion of triple-negative breast cancer cells. Methods:Difference of migration and invasion between lung-high metastasis breast cancer cell line 231-HM and its parental cell line 231-p were first examined by cell scratch and transwell;Then, metastasis-associated proteins and MAPK-associated molecules were detected by Western blot; Last, 231-p cells were treated with P38/MAPK inhibitor and used to determine cell migration, invasion, and metastasis-associated proteins thereafter. Results:Compared with the parental cell line 231-p, 231-HM cells displayed obviously higher ability of migration and invasion. With the increased expression of Caveolin-1and β-catenin, the phosphorylation of MAPK-associated molecules including P38, Erk1/2, and MEK was highly decreased. Treatment of 231-p cells with low concentration (10 μmol/L) of the P38/MAPK inhibitor SB202190 increased the migration and invasion of 231-p cells, and the expression of Caveolin-1 andβ-catenin. Conclusion:Activation of MAPK signaling inhibits the migration and invasion of triple-negative breast cancer.

Objective　To investigate the expression of LPS receptor-CD14(CD14) on the membrane of Kupffer′s cells (KCs) induced by Lipopolysaccharide (LPS )and its role in activation of KCs and production of cytokines. Methods　KCs were isolated by collagenase perfused Wistar rats and routinely cultured in 24-well dishes for 12 h. Cells were harvested and adjusted to a concentration of 1×106/ml/well and were devided into two groups. Group of LPS: KCs were induced with different concentration of LPS (0, 100 ng/ml, 1 μg/ml and 100 μg/ml). Group of PI-PLC: KCs were pre-incubated for 30 min with one unit of phophatidy linositol specific phospholipase C (PI-PLC) before different concentrations of LPS were added. KCs were cultured for 30 and 60 min respectively. Supernatants were then collected for measuring the level of TNFα and IL-6. Cells were stained by indirect immunofluorescent method ( rabbit anti-CD14 antibody and goat anti-rabbit IgG conjugated with FITC ) and analyzed with flow cytometer (FCM). The percentage and mean fluorescence intensity (FI) of CD14-positive cells were taken as the indexes. Results　In LPS group, after incubation of cells with increasing concentration of LPS, a significant increase in the percentage of CD14 positive KCs were found and the mean FI was stronger when compared with the control points or the group of PI-PLC. The levels of TNFα and IL-6 in supernatant also increased (P<0.01). In group of PI-PLC, decreased percentage of CD14 positive KCs and weakened mean FI were found when compared with group of LPS. The increasing production of TNFα and IL-6 slowed down in the group of PI-PLC. Conclusion　CD14 expression of KCs might be up-regulated by LPS with increase of some cytokines. The production of cytokines in KCs induced by LPS is partially inhibited by PI-PLC.

Objectives To investigate the mutational characteristics of MSX1 and PAX9 genes in a family affected by non-syndromic oligodonti so as to study the pathogenesis of oligodontia from a molecular prospective. Methods A family with oligodontia, but of different descent and unrelated healthy controls were enrolled in our study. Genomic DNA was isolated from the blood samples. Mutation analyses were performed by amplifying MSX1 and PAX9 exons and sequencing the products. Results DNA sequencing revealed a novel missense mutation c.348C>T in a highly conserved homeobox sequence of MSX1 and a known polymorphisms c. 469+35- c.469+45del in exon 1 and in intron in the two patients and in two unrelated healthy controls. But we did not detect any mutation in PAX9. Conclusion Our finding suggests the samesense mutation (c.348C>T) and the polymorphisms (c.469+35- c.469+45del) may be responsible for oligodontia phenotype in this Chinese family.

BACKGROUND:Our preliminary study found that the monocusp valves made of ultramicropore expanded
polytetrafluoroethylene (ePTFE) revealed no significant thrombus, calcification, or degradation 20 weeks after implanted into the descending aorta and the left pulmonary artery in sheep, which verified the good property of ePTFE. However, the surface of ePTFE in the left pulmonary artery was covered with obvious neointima.
OBJECTIVE: To assess the biocompatibility of phosphorylcholine-coated ePTFE.
METHODS:ePTFE surface was modified by phosphorylcholine derivative. Then the changes of surface shape, tensile stress at yield and elasticity modulus, water contact angle, and protein absorption capacity of ePTFE after surface modification were observed. (1) Hemolytic test: the leaching solution of phosphorylcholine-coated ePTFE, leaching solution of uncoated ePTFE, normal saline, and distiled water were added to the diluted human blood, respectively. (2) Platelet count test: the phosphorylcholine-coated ePTFE, uncoated ePTFE, high density
polyethylene, and Zymosan A were added to the whole blood samples from healthy volunteers, respectively.
(3) Platelet activation test: the phosphorylcholine-coated ePTFE, uncoated ePTFE, γ-Globulins, and Zymosan A
were added to the whole blood samples from healthy volunteers, respectively.
RESULTS AND CONCLUSION: The mean micropore diameter of ePTFE was significantly decreased after
phosphorylcholine coating (P < 0.001). The hydrophilicity and the ability of suppressing protein adsorption were
significantly strengthened after phosphorylcholine coating (P < 0.001). Phosphorylcholine coating did not influence
ePTFE in biomechanical properties and hemolytic test. The platelet count test and platelet activation test demonstrated that phosphorylcholine coating significantly improved anti-thrombus function of ePTFE. So, phosphorylcholine coating can enhance anti-thrombus function, suppress protein adsorption, and improve biocompatibility of ePTFE.

the incidence of the complication.

AIM: To explore the effects and possible mechanism of exogenous spermine on the apoptosis of primary cultured neonatal cardiomyocytes induced by simulated ischemia-reperfusion (I/R) injury. METHODS: To establish a model of simulated I/R, the primary cultured neonatal rat cardiomyocytes were incubated in ischemia-mimetic solution (under the conditions of hypoxia plus serum deprivation) for 2 h, and re-incubated the cells in normal culture medium for 24 h. The apoptotic cell death was assayed by flow cytometry. The morphological alterations of the cells were observed under transmission electron microscope. The transcription and expression of Fas and FasL were determined by the methods of RT-PCR, Western blotting and immunofluorescence. RESULTS: The cells exposed to I/R underwent significant apoptosis, and the percentage of apoptotic cells was 27.4%±1.8%, much higher than that in normal group (5.7%±0.3%). In I/R group the evident histopathological changes were observed and the myocardial transcription and expression of Fas and FasL were significantly upregulated. Compared to normal group, mRNA expression of Fas and FasL increased 2.2 folds and 2.4 folds, respectively, and their proteins increased 1.7 folds and 1.9 folds at 24 h of reperfusion respectively (P<0.01). Pretreatment with 10 μmol/L spermine significantly inhibited apoptosis of I/R injured cells, and the percentage of apoptotic cells was 21.7%±1.3% (P<0.01, as compared to I/P group). Spermine also suppressed the expression of Fas and FasL significantly (P<0.05 or P<0.01, as compared to I/P group). CONCLUSION: Spermine plays anti-apoptotic effect on the cultured neonatal myocardial cells under the condition of I/R injury by suppressing the expression of Fas/FasL.

AIM: To explore the regulatory effects of cytokines such as EGF, bFGF on expression of neural-specific molecules in mononuclear cells (MNCs) cultured in H-DMEM medium. METHODS: The umbilical cord blood samples were collected from health puerperal natural delivery. The mononuclear cells were isolated by centrifugation over Lymphoprep and planted in T-75 flasks containing H-DMEM medium with or without addition of EGF, bFGF or EGF plus bFGF at a final concentration of 20 ?g/L, respectively. Phenotypic changes were monitored by inverse phase-contrast microscopy. Tau and MAP2 mRNA were determined by reverse-transcript polymerase chain reaction (RT-PCR). Tau and MAP2-positive cell were determined by immunocytochemistry. RESULTS: The expression of tau protein mRNA was negative in uncultured cells, but MAP2 mRNA was positive. In cultured cells, tau protein mRNA expressed positively, MAP2 mRNA expression was upregulated by EGF+bFGF, EGF or bFGF compared with control group (no cytokines). The upregulatory capability of EGF+bFGF to MAP2 mRNA expression was stronger than that of EGF or bFGF alone. The same upregulatory tendency was noted in tau mRNA expression. In the group of control, bFGF, EGF, EGF+bFGF, the rate of MAP2-positive cells was 14.4%, 19.6%, 25.6%, 33.5%, respectively. Tau protein-positive cells were 13.5%, 15.3%, 21.4%, 29.8%, respectively. Under inverse microscopy, the freshly isolated MNCs were small and round, after culturing, the cells became larger with some big, long cytodenrites in the EGF+bFGF group, with 1 or 2 threadlike cytodenrites in the EGF group, or with some short multi-dendron like-astrocyte in the bFGF group and control group, but the number of astrocyte-like cells in the control group was less than that in bFGF group. CONCLUSION: MNCs derived from human umbilical cord blood cells express some neural specific molecules and are upregulated by cytokines, especially EGF and bFGF, which have the synergetic action. [

Precision medicine pointed out the future direction for medicine,providing new opportunities for the development of TCM,putting forward higher requirements and encountering severe challenges of the quality research of TCM.In view of the core connotation of precision medicine and the characteristics of TCM,we presented the precision connotation of quality based on the basic attributes,the clinical application and function characteristics of TCM in accordance with the thinking mode and method of the transformation research.In this article,we indicated the research approach for the scientific evaluation and effective control of quality based on the precise cognition of TCM.

Objective To explore the prevalence and influential factors of chronic respiratory system diseases among resi-dents over 1 5 years old in Hubei province and provide evidence for disease prevention.Methods During October to November in 2013,through stratified cluster sampling,we sampled 20 cities or counties.The survey included the the general condition of family, individual,chronic diseases.Results A total of 28 563 residents answered the questionnaire and 423 of them reported chronic re-spiratory system diseases by themselves.The prevalence rate was 14.8‰.These included 229 cases with COPD(54.1%),44 cases with asthma(10.4%),35 cases with chronic pharyngolaryngitis(8.3%)and 1 1 5 cases with other chronic respiratory system disea-ses(27.2%).In urban and rural area,the prevalence rate were 13.6‰ and 1 5.7‰ respectively.Multivariate logistic analysis showed that gender,age,economic status and medical insurance are influential factors of chronic respiratory system diseases.Conclusion Prevalence rate of chronic respiratory system diseases among residents over 1 5 years old in Hubei province was slightly increased and disease control measures should be brought out.

Objective To evaluate the outcomes of penoplasty with penile frenulum lengthening for concealed penis in children.Methods From March 2014 to March 2016,a total of 233 patients with concealed penis who enderwent penoplasty with penile frenulum lengthening were enrolled.The everage age at surgery was 3.7 years (1 year and seven months-12 years).There were 73 cases with obvious small urinary stream,dysuria,or prepuce dilatation when urinating;41 cases with the history of recurrent infections of prepuces;and 9 cases with the history of urinary tract infections.During operation,incise the back side center of the outer plate of the prepuce and fully release the ring-type funicular tissue between the inner and outer plates of the prepuce to make the inner plate fully swell out.After the prepuce is upturned,cut the penile frenulum at the coronary sulcus.Make a V-shaped cut on the left and right sides of the far end of the outer plate cut of the prepuce from the cut of the penile frenulum.Lengthen penile frenulum after the prepuce is pressed off.Cover the dorsal side of the penis with the inner plate of the prepuce and cover its ventral side with its outer plate.Results Mean surgical time for patients was 38 min (30-55 min).All operations were completed successfully and the post-operation follow-up lasts 3 months to 2 years.For all cases,the appearance of the penis is improved.The penis stretches out,the balanus is exposed,the prepuce has no obvious swelling and the scrotum angle of the penis is obvious.No phimosis relapses and there is no obvious scar hyperplasia.Conclusions This surgical procedure is an effective treatment choice for concealed penis.It provides a good cosmetic result.