Tyrosine kinase receptors mediate many critical cellular functions that contribute to tumor progression and metastasis.Recepteur d'origine nantais(RON)belongs to a subfamily of receptor tyrosine kinases(RTK)with unique expression patterns and biological activities.RON is activated by a serum-derived growth factor macrophage stimulating protein(MSP),primarily expressed in cells of epithelial origin.RON activation induced cell transformation,growth,migration and matrix invasion.We review RON molecular structure,activation,and carcinogenic mechanism related.It will contribute to cancel treatment and to discuss RON expression in the tumor.

Objective To investigate the expression of endometrial developing-related genes,the endometrium-like structure and cells during spontaneous differentiation of hESCs. Methods (1) Embryoid bodies were cultured in suspension for 14 days,fixed in 10% neutral-buffered formalin and embedded in paraffin.Estrogen receptor(ER) was detected by immunocytochemical staining.(2) hESCs were cultured in a 35 mm plastic dish and differentiated spontaneously for 10 days.The expression of ER and Vimentin/Keratin was detected by double immunofluorescence histochemistry.(3) hESCs were cultured in a 35 mm plastic dish and differentiated for 5 days.The expressions of endometrial developing-related genes including Wnt4,Wnt7a,Wnt5a,Hoxa10,Hoxa11 and ER were detected by RT-PCR. Results (1) The endometrium-like structures were detected in 14-day-old EBs and some were positive for ER staining.(2) Some spontaneously differentiated cells from hESCs for 10 days were positive for ER together with Vimentin/Keratin.(3)Wnt7a,Wnt4,Hoxa10,Hoxa11 and ER were detected by RT-PCR in hESCs which were differentiated spontaneously for 5 days.Conclusion During the spontaneous differentiation of hESCs,some cells are liable to differentiate into endometrial stem cells and endometrium-like cells.However,further identifications of the whole development process are needed to be done in the future.

Hydronephrosis is one of the most common urological diseases in children.Most of hydronephrosis caused by ureteropelvic junction obstruction.Whether these children need operations were being argued.The current tendency is when the renal function become worse,operation is suggested needed,in order to save the renal function.So the methods how to evaluate the renal function are especially important,this article related to the current research and review.

Objective To investigate the angiogenesis effect induced by hone marrow mobilization on the ischemic hindlimbs of diabetic mice.Methods Diabetes mellitus was induced in mice by injection of streptozotocin.To observe the angiogenesis effect in ischemic limbs,unilateral femoral artery and all the side branches were excised and then was given granulocyte-colony stimulating factor (G-CSF) for bone marrow mobilization.Results The level of nitric oxide (NO) in plasma was significantly lowered 8 weeks after establishment of diabetes mellitus.After mobilization for 8 days,CD_(34)~+ cells in peripheral blood of mice were increased significantly [from (0.15?0.05)% to (2.30?0.41 )%],the vascular endothelial growth factor (VEGF) mRNA level of ischemic limb,which was examined with semi-quantitative RT-PCR,became higher in diabetic mice than that in non-diabetic mice.Two weeks following mobilization,the blood perfusion detected by LASER Doppler perfusion scan in the ischemic hindlimbs was significantly higher in the diabetic mice than in that the nondiabetic mice [(76.37?6.10) % vs (18.07?3.40) %,P＜0.05],vWF immunohistochemical staining showed that the density of capillaries was significantly greater in the mobilization group than that in the non- mobilization group [ (26.6?4.8 vs 11.5?2.6 )/per field,P＜0.05 ].Conclusion Diabetes mellitus reduced the modulatory role of the endothelium in mice,but therapeutic angiogenesis induced by bone marrow mobilization could be an effective treatment for ischemic limb disease in diabetic mice.

No abstract available.
Cerebrospinal Fluid* ; Child* ; Humans ; Lymphocytosis* ; Meningitis, Bacterial*

Objective To prepare recombinant mda-7/IL-24 adenovirus to study its function on the proliferation of small cell lung cancer NCI-H446 cells. Methods According to the manufacturer's instructions of AdEasy vector system, mda-7/IL-24 cDNA was subcloned into the adenoviral shuttle vector pAdTrack-CMV. The efficient recombination of adenoviral backbone vector pAdEasy-1 and pAdTrack-CMV-mda-7/IL-24 was achieved in bacteria E. coli BJ 5183. The recombinant adenoviral vector pAd-mda-7/IL-24 linearized by Pac Ⅰ was transfected into HEK293 cells with lipofectamine 2000. To generate higher titer viral stocks, the amplification of recombinant adenovirus was accomplished in packing cells. Viral titers were measured by tissue culture infectious dose 50 (TCID_ 50 ) method. Ad.mda-7/IL-24 was identified by PCR. The expression of pAd-mda-7/IL-24 in NCI-H446 cells was detected by Western-blot analysis. The function of Ad.mda-7/IL-24 on the proliferation of NCI-H446 cells was assayed by MTT after cells were infected by 50 pfu/ml adenovirus. Results The recombinant adenoviral shutter vector pAdTrack-CMV-mda-7/IL-24 and recombinant adenoviral vector pAd-mda-7/IL-24 were constructed successfully as identified by sequence analysis. PCR assay showed that adenovirus Ad.mda-7/IL-24 contained mda-7/IL-24 cDNA. After amplification in packing cell HEK293, the titer of virus was 2?10~ 10 pfu/ml measured by TCID_ 50 assay. Western-blot results identified that MDA-7/IL-24 could be expressed in NCI-H446 cells. After infected by 50 pfu/ml adenovirus, the proliferation of NCI-H446 cells was inhibited by 21.37% with MTT method. Conclusion Ad.mda-7/IL-24 can inhibit the growth of NCI-H446 cell obviously. This result lays foundation to study its function mechanism and to apply it in gene therapy of the small cell lung cancer.

To investigate the relationship between diabetic macular edema (DME) and serum E-selectin level.
●METHODS: Totally 90 patients with diabetic retinopathy in our hospital from October 2009 to October 2013 were observed. Retrospective analysis of the correlation between macular edema degree and serum soluble E -selectin ( sE - sel ). Ninety patients with diabetic retinopathy were divided into two groups: DME group and non - DME group. The level of sE - sel and microalbuminuria (MA) of two groups were determined and compared.
●RESULTS: There was significant difference in MA, sE-sel levels of groups ( P < 0. 05). The value of diabetic retinopathy patients with sE - sel and MA, FBG were positively correlated ( r = 0. 728, P < 0. 05; r = 0. 651, P <0. 05).
●CONCLUSlON: Elevated levels of sE-sel is a risk factor for diabetic macular edema, and sE-sel was involved in the pathogenesis of diabetic microangiopathy.

Chronic active Epstein - Barr virus infection(CAEBV) is an uncommon outcome of EBV infection and may present as severe of fulminant syndrome with high- mortality. It is characterized by chronic or recurrent infectious mononucleosis-like symptoms persisting over a long time and by an unusual pattern of anti-EBV antibodies. Although it occurs in immunocompetent individuals, a number of subtle immunologic defects have been reported in patients with CAEBV. Up to now, there are still no diagnostic criteria of CAEBV in China,so the author introduce it with respect to its diagnosis,history,pathogenesis and therapeutic approaches.

Antiviral Agents ; therapeutic use ; Child ; Deoxyribonuclease (Pyrimidine Dimer) ; therapeutic use ; Humans ; Immunization, Passive ; Infant ; Picornaviridae Infections ; drug therapy ; therapy ; Respiratory Syncytial Virus Infections ; drug therapy ; therapy ; Ribavirin ; therapeutic use

Aim To investigate the toxicity of isopsor-alen in HepG2 cells and its effects on bile acid, bile acid synthesis and transport. Methods Cell viability was evaluated by MTT assay and bile acid was deter-mined inside HepG2 cells, with exposure to various isopsoralen for 24h. The mRNA transcription of BSEP, MRP2, MRP3, NTCP, OATP2, OSTα, CYP7A1, CYP27 A1 , FXR and PXR were assessed by real-time PCR. Results The cell viability was decreased dose-dependently with isopsoralen in HepG2 cells, and IC50 was 118. 1μmol·L-1 exposure to isopsoralen for 24h. Bile acid inside cells significantly increased with 100 and 400 μmol · L-1 isopsoralen. Isopsoralen caused the down-regulation of MRP2 , MRP3 , CYP7 A1 mRNA at 25 μmol · L-1 . Beside these, the up-regulation of OATP2,OSTα,CYP27A1,FXR,PXR with 100 μmol· L-1 isopsoralen, but there was no significant change of BSEP and NTCP. Conclusion The results show that isopsoralen induces bile acid accumulation and cytotox-icity which may be associated with the down-regulation of MRP2, MRP3 in HepG2 cells.