OBJECTIVE: To investigate the effects of erythropoietin (EPO) on renal fibrosis of unilateral uretreal obstruction (UUO) rats and its mechanism. METHODS: The model of renal fibrosis was established by UUO procedure in rats. Experimental rats were randomly divided into 4 groups: sham operation group (control group), UUO group, 100 u · kg-1 · d-1 EPO treatment group (low dosage group) and 1000 u · kg-1 · d-1 EPO treatment group (high dosage group). The rats in control group and UUO group were given physiological saline, and those in UUO treatment group were given EPO by intraperitoneal injection from 3 to 14 d after establishment of UUO model. All rats were given methane to induce anesthesia and consequently executed. The pathological change of renal tissue was observed, and immunohistochemistry was performed to measure the expressions of α-SMA, E-cadherin and complement 3 (C3) in renal tissue. RESULTS: Compared with UUO group, renal fibrosis were attenuated by EPO treatment, especially in high dosage group. Compared with control group, the expressions of α-SMA and C3 were significantly up-regulated, and the expressions of E-cadherin were significantly down-regulated in UUO group. In contrast, EPO treatment significantly attenuated the up-regula-tion of C3 and α-SMA and the down-regulation of E-cadherin in renal tissue, and these changes were more obvious in UUO rats treated with high dosage of EPO. CONCLUSION: EPO can inhibit EMT and attenuate renal fibrosis in obstructed kidney. It is suggested that the renoprotective effects of EPO are probably related with inhibition of C3 expression in renal tubular epithelial cells. Copyright 2012 by the Chinese Pharmaceutical Association.

Objective To explore the effects of environmental factors such as temperature, relative humidity and ventilation rate on release quantity of formaldehyde in woodiness boards. Methods A small climate chamber was employed to control the temperature, concentration of vapor and ventilation rate. The quantity of formaldehyde released from woodiness boards was determined by 4160 Formaldehyde Analyzer of INTERSCAN. Results The released quantity of formaldehyde increased from 0.12 mg/(m2?h) to 0.35 mg/(m2?h) as the temperature increased from 18 ℃ to 38 ℃, it increased from 0.20 mg/(m2?h) to 0.46 mg/(m2?h) as the concentration of vapor increased from 3.99 mg/L to 15.75 mg/L, it increased from 0.21 mg/(m2?h) to 0.62 mg/(m2?h) as the ventilation rate increased from 0.5 h-1 to 2.0 h-1. Conclusion The emission rate of formaldehyde in woodiness boards will be accelarated when the temperature, concentration of vapor and ventilation rate increased.

The 2008 World Health Organization Classification of Tumors of Hematopoietic and Lymphoid Tissues (4th edition) has greatly advanced the diagnosis, treatment, academic exchange, and research of lymphoma worldwide. A new revised edition will be published soon, in which the diagnosis and management of lesions at the very early stages of lymphomagenesis, the diagnostic criteria for several entities, and the genetic/molecular landscape of numerous lymphoid neoplasms and their clinical correlates have been clarified, refined, detailed, and expanded. Furthermore, several new concepts have been suggested in the upcoming revised edition, although the framework of classification remains the same. These updates will lead to development of more targeted therapeutic strategies and increase our confidence in the era of precision medicine. This manuscript will review the major advances and updates that are helpful for our un-derstanding and improvement in tumor diagnosis.

AIM: To investigate autofluorescence (AF) images of classical retinitis pigmentosa (RP) at advanced stage correlated with central vision. METHODS: Thirty-seven patients (70 eyes) with classical RP at advanced stage were observed. AF imaging was performed using a Heidelberg Retina Angiograph 2 ( HRA-2) scanning laser system with the field 30°, the pixels 1 536×1 536 and pupil diameters >6mm. Some patients underwent automated static peri-metry and the flash electroretinogram(FERG) were performed according to International Society for Clinical Electrophysiology of Vision( ISCEV) standard. RESULTS: All patients were classified as four patterns according to their manifestation of AF they were intact, patchy, solitary island and central hypofluorescence patterns. Different pattern showed different central vision. The data demonstrate high correlation between the central cone function and AF changes of the fundus. There is significant correlation (n= 57, r= 0.385,P＜0.01) between central vision and the AF area and between age and AF area (n= 57, r= -2.67,P＜0.05).CONCLUSION: AF images is valuable to the monitoring of central cone function and in predicting retention of central vision. The changes of AF images correlated with central vision and different pattern showed different vision.

Animals ; Cytokines ; metabolism ; Humans ; Lung ; metabolism ; pathology ; Pulmonary Fibrosis ; metabolism ; pathology ; Reactive Nitrogen Species ; metabolism ; Reactive Oxygen Species ; metabolism

Objective To study the effect of heat treatment with sol-gel method on the surface of Ni-Cr alloy for PFM after Ti coating. Methods To establish the sol-gel method of Ti coating on the surface of Ni-Cr dental casting alloy for PFM(pre-treatment for the surface of Ni-Cr alloy,preparation of sol,coating,heat treatment) and to evaluate the color and fragmentation of 10 materials after heat treatment by ISO 10289. Results When kept at a higher condensation temperature and held for a longer time,the materials had less fragmentation.A higher agglutination temperature and a longer time made the materials look deep.When the condensation process was heat treated at(200 ℃) for 2 h and the agglutination process at 450 ℃ for 2 h,the thin film of Ti combined firmly with the surface of Ni-Cr alloy. Conclusion The procedure for heat treatment of Ti coating will affect the level of oxidation reaction on the surface of Ni-Cr alloy,and will change the level of combination between Ti and Ni-Cr alloy.

Objective To study the effect of Mutans Streptococcus(S.Mutans) on the corrosion resistance of Ni-Cr alloy. Methods S.Mutans were isolated in TSB,and then 10~(5)10~6 CFU/mL of bacterial population was reached.The self-corrosion electrical current density and the corrosion electrical current potential of Ni-Cr alloy were found from polarization curves under the condition with or without media plus S.Mutans.The surface of Ni-Cr alloy after bacterial corrosion was examined with X-ray photoelectron spectroscopy(XPS) to find out different element contents.(Results)From polarization curves,it could be found that the self-corrosion electrical current density and the corrosion electrical current potential of Ni-Cr alloy without S.Mutans were 53.5 ?A/cm~(2)and-62 mV,and those with S.Mutans were 75.7 ?A/cm~(2)and-220 mV.Examination of XPS showed that besides Ni and Cr,the element of chlorine(Cl),sulphur(S),calcium(Ca) could be found on the surface of Ni-Cr alloy after bacterial corrosion.(Conclusion Because of) the metabolism of S.Mutans,an oxide film could be destroyed and a biofilm be formed on the surface of Ni-Cr alloy.Bacterial corrosion could lower the corrosion resistance performance of Ni-Cr alloy.

Objective: To prepare killer peptide-loaded PLGA nanoparticles which have better effect in treating systemic crypotococcosis. Methods: We adopted a modified double-emulsion method to prepare the killer peptide-loaded PLGA noparticles, and the nanoparticles were characterized by using TEM, SEM, Dynamic Laser Scattering, drug loading analysis, ecapsulation efficacy assessment and in vitro release test. We also evaluated the antifungal activities of killer peptide and killer peptide-loaded PLGA nanoparticles against Cry ptOcoccus neoformans ATCC32609 by plate count method. In the in vivo study, the anticryptococcal efficacies of killer peptide and killer peptide-loaded PLGA nanoparticles were compared by observing the survival and colony-forming in vital organs in a systemic murine cryptococcosis model. Results1 We successfully synthesized killer peptide-loaded PLGA nanoparticles. In vitro anticryptococcal test showed that the killer peptide and killer peptide-loaded PLGA nanoparticles had significantly stronger anticryptococcal effect compared with the normal saline group (P<0.05), and there was no significant difference in the efficacies between free killer peptide and killer peptide-loaded PLGA nanoparticles (P>0.05). In vits test demonstrated that mice treated with killer peptide-loaded PLGA nanoparticles (3 mg/kg or 5 mg/kg) had longer survival period and less fungal burden in vital organs than mice treated with free killer peptide (P<0.05); there was no significant difference in fungal burden and survival period between empty PLGA nanoparticle treated group and normal saline group (P>0.05). Conclusion: The killer peptide-loaded PLGA nanoparticles are more effective in treating systemic murine cryptococcosis.

The quorum sensing commonly exists in procaryote kingdom, regulating various biologic functions. Recently similar phenomenon was also found in fungi world, which affecting both biofilm formation and dimorphism. In this article, we focus on the recent progress on quorum sensing of pathogenic fungi and discuss the possibility of taking quorum sensing molecule as a potential target for antifungl therapy.

Objective To determine the transfection of PTEN gene in human ovarian carcinoma SKOV3 cells by ultrasound mediating and contrast agent′s enhancing, and to explore the mechanism of PTEN gene inhibiting the tumor cells′ invasion. Methods After addition of PTEN gene and 5 ?l lipofectamine,human ovarian carcinoma SKOV3 cells on 6-well plates were explored to ultrasound for 60 s in the presence(200 ?l) of ultrasound agent. The invasiveness of transfected cells was measured quantitatively by Matrigel invasion assays(Transwell chamber) after 48 h. Results The invasiveness of SKOV3 cells transfected by ultrasound-mediated PTEN gene was significantly declined compared with that of the controls. Conclusions The transfection of PTEN gene into SKOV3 cell can inhibit their invasion.The gene transfection can be enhanced by ultrasound and contrast agent,which may be expected to be a new means of clinical gene therapy.