Objective To assess the safety and feasibility of minimally invasive percutaneous nephrolithotomy(mPCNL) in the treatment of solitary kidney calculi.Method Thirty-eight patients with solitary kidney calculi,treated with mPCNL from Jan 1998 to May 2004,were retrospectively investigated.Results Of 38 cases,there was 6 cases with pyonephrosis and 32 cases with the treatment of one stage percutaneous nephrolithotomy.With the treatment of 1 to 3 tract was used for calculus removed in all cases,a total of 86% stone-free rate was achieved.Only one case with pyonephrosis suffered from postoperative infection shock while one stage minimally invasive percutaneous nephrolithotomy was performed.Another one patient with diabetes suffered from postoperative ketoacidosis and no major complications were noted in other patients.Conclusion Minimally invasive percutaneous nephrolithotomy is safe and effective in the treatment of solitary kidney calculi.

Objective The recombinant fluorescent eukaryotic expressing vector containing hTERT cDNA was transfected into human embryonic fibroblasts (hEFs) to explore the effects of exogenous hTERT on the type I and III collagens expression in hEFs. Methods p IRES2-EGFP-hTERT plasmid and pIRES2-EGFP plasmids were transfected into primary hEFs respectively by Lipofectin reagent. Expression of type I and III collagen was determined by Western blotting and the content of type I and III collagens in the cellular medium at 3 days after transfection were examined by radio-immunoassay. Results The expression levels of type I and III collagens in hTERT gene transfected hEFs(hEF-hTERT) were obviously higher than those in untransfected hEFs and vacant vector transfected hEFs(hEF-EGFP). The content of type I and III collagens in the cellular medium in hEF-hTERT cells at 3 days after transfection was also higher than that in untransfected hEFs and hEF-EGFP cells. Conclusions The synthesis ability of type I and III collagens in hEFs could be promoted by exogenous hTERT gene transfection.

Objective To screen and analyze genes up regulated in human umbilical vein endothelial cells (HUVEC) stimulated by lipopolysaccharide (LPS). Methods Suppression subtractive hybridization (SSH) was performed between the unstimulated HUVEC(driver) and HUVEC stimulated with LPS(tester) to generate subtractive cDNA library. The library was screened with colony dot hybridization to further verify the differentially expressed cDNA clones. Positive clones were sequenced and BLAST analyzed. The 3 novel cDNA sequences were verified by RT PCR. Results Twenty five up regulated genes related to inflammation, cellular cytoskeletal rearrangement, cellular proliferation and apoptosis, intercellular message transduction, and 3 new expression sequence tags (EST) were acquired. RT PCR indicated the expression of the new ESTs only in HUVEC stimulated by LPS. Conclusion SSH is a powerful technique of high sensitivity for the detection and clone of up regulated gene expressed in HUVEC stimulated by LPS, which may be helpful to clarify the mechanism of endothelial cells activation stimulated by LPS.

In order to explore the effects of exogenous human telomerase reverse transcriptase (hTERT/hTRT/hEST2) on telomeric restriction fragment (TRF), telomerase activity and its subunits expression in human embryonic fibroblasts (hEFs), hTERT sense eukaryotic expression vector pIRES2 EGFP hTERT was constructed with DNA recombinant technique and then transfected into primary hEFs by Lipofectin method. TRF length, telomerase activity and changes in telomerase subunits expression were examined and evaluated in transfected and untransfected cells. The results showed that telomerase activity in pIRES2 EGFP hTERT transfected cells (hEF EGFP) was significantly higher than that in untransfected hEFs and vacant vector transfected cells (hEF EGFP) ( P

Objective To study the subcellular localization and the tissue expression of EOLA1(endothelial-overexpressed lipopolysaccharide-associated factor 1). Methods The fusion protein EOLA1-EGFP expressed vector was constructed and transfected into endothelial cells. After 24 hours posttransfection, the subcellular localization of EOLA1 was detected by laser-scanning microscopy. The tissue-specific distribution of EOLA1 was assessed with Multiple Tissue Northern Blots. Results The expression of EOLA1 was tissue-specific in various human tissues. With human multiple tissue Northern blot analysis, it was shown that EOLA1 could express in the heart, skeletal muscle, kidney, liver, placenta, colon, spleen, small intestine, but did not in the brain, lung, thymus, and peripheral blood leukocyte. EOLA1 was mainly localized in cytoplasm and could move into the nucleus. Conclusion EOLA1 is one of intercellular proteins and may play a role in intercellular signal transduction.

To screen genes in endothelial cells resulted from responding to lipopolysaccharide (LPS), mRNA was extracted from both untreated human umbilical endothelial cells (HUVEC) following and HUVEC which were treated with LPS for 6 hours. cDNAs of both populations were synthesized to generate cDNA libraries by suppression subtractive hybridization (SSH). The libraries were then screened with colony dot blots. Positive clones were sequenced and BLAST analysed. The results showed differential genes included 3 novel genes and 22 known genes. The 3 novel genes were confirmed by Northern blotting analysis. These 22 known genes were involved in the regulation of proinflammatory response, cell apoptosis, cytoskeleton, signal transduction and energy metabolism. These results suggest that SSH is an effective technique to detect differential gene expression in HUVEC, which may be helpful to evaluate molecular mechanisms of endothelial injury induced by LPS and provide potential therapeutic targets for LPS related disturbances.

Objective To investigate the treatment of hemorrhage after mini-percutaneous nephrolithotomy. Method From February 2001 to May 2006, 20 clinical data of severe bleeding were retrospectively analysed in 3910 cases of mini-percutaneous nephrolithotomy in treatment of upper urinary calculi. Results In 20 cases, 19 were successfully treated, in which 2 patients can be treated with expectant treatment (transfusion and catheter compression), 16 cases were rendered with super-selective arterial embolization;1 case with nephrectomy;1 case wsa suffered from DIC and died. Conclusions The most familiar complication of mini-percutaneous nephrolithotomy is bleeding. If only be more carefully and try the right way in time, the safety of the operation must be increased.

Mother-to-child transmission (MTCT) is a major route of transmission of syphilis,and may occur at any time during pregnancy.MTCT of syphilis can lead to many adverse pregnancy outcomes,seriously affects maternal and infant health,and has been a severe public health and social problem.The risk of MTCT of syphilis is associated with stage of syphilis in pregnancy,stage of pregnancy,receiving or not receiving treatment,and is especially high in patients with early syphilis.With the growth of incidence of syphilis,the prevention for MTCT of syphilis has been becoming more and more important.Screening for and early treatment of syphilis in pregnancy can effectively block MTCT of syphilis.To learn the epidemiology,route,risk,and associated factors of MTCT of syphilis will undoubtedly facilitate the development of strategies for syphilis prevention and control.

OBJECTIVE:To investigate the effect of liposome-encapsulated demethoxycurcumin on the proliferation of human lung adenocarcinoma cell line A549.METHODS:The in vitro cultured human lung adenocarcinoma cell line A549 was treated with liposome-encapsulated Bisdemethoxycurcumin.The bionomics including morphology and cell cycle of cell line A549 were observed by morphological analysis,MTT assay and flow cytometry assay.RESULTS:Marked morphological changes were noted in cell line A549 under microscope.Liposome-encapsulated Bisdemethoxycurcumin showed inhibitory action on the growth of A549 cell lines,with IC50 at 12.108?g/mL.The progression of cell cycle was arrested in S phase.CONCLUSION:Liposome-encapsulated Bisdemethoxycurcumin can inhibit the growth of human lung adenocarcinoma cell line A549,which has a promising future in the treatment of adenocarcinoma of lung.

Objective To investigate the clinical features,treatment response and prognosis of patients with severe hemorrhagic fever with renal syndrome and complicated with acute anhemopoisis.Methods The clinical features of 18 patients with hemorrhagic fever with renal syndrome complicated with acute anhemopoisis were retrospectively analyzed.Resalts The clinical manifestations of the 18 adult patients(10 males and 8 females,age ranged from 14 to 55 years)with hemorrhagic fever with renal syndrome showed irregular fever,abrupt anemia and multiple sites hemorrhage at the severe stage(9-25 days after the onset).Peripheral leucocytes counts reduced to(2.3-3.2)×109/L,platelet to(23-31)×109/L,erythrocytes to(2.23-2.79)×1012/L,hemoglobulin to 52-67 g/L and reticulocyte to 0-0.002.Bone marrow test results showed that the hyperplasia of erythrocytes series decreased.The ratio of granulocyte to erythroeyte was significantly elevated,while granuloeyte and megalocaryocyte series decreased.The specific manifestations of acute anhemopoiesis were abrupt anemia,irregular fever and multiple sites hemorrhage.The major combined treatments were cortecosteroids and blood transfusion.These patients recovered at 26-60 days after the onset of the disease.Conclusions Hantaan virus could attack human bone marrow cells and induce cytopathogenic effect.In the course of hemorrhagic fever with renal syndrome,acute anhemopoisis could occur.The prognosis of these complicated cases is usually favorable.