Acute kidney injury and acute respiratory distress syndrome are the most common organ failure in intensive care unit with high mortality.Both lung and kidney are involved in maintaining acid-base balance in the body, and both organs contain a large vascular network, which is the primary target organ for distant organ effects in the failure of each other.This article reviewed the possible pathogenesis of lung-kidney cross-talk in renal injury or acute respiratory distress syndrome, in order to deepen the understanding of both diseases and improve the prognosis.

Objective To evaluate transcatheter thrombolysis via the small saphenous vein in the treatment for lower limb acute mix-deep venous thrombosis. Method From Jan 2005 to Mar 2007.37 patients with lower limb acute mix-DVT underwent catheter-directed thrombolysis via the small saphenous vein with urokinase(149 ±71)×104 IU continuous infusion.The venous patency score and the rate of patency improvement were observed by venograms before and after therapy.Twenty-two patients were followed up for(12 ±4)months. Results Venous patency score were significantly improved(Z=-5.330,P＜0.01).The mean rate of venous patency was 50.17%±15%,and there was no complication.Venogram on 6～12 month follow up showed a venous patency of 58%±13%(Z=-3.545,P＜0.01),and that on 13～18 months was 68%±20%(Z=-2.201,P＜0.05). Conclusion This preliminary experience suggests that catheter-directed thrombolysis via the small saphenous vein with urokinase for acute lower limb mix-DVT iS safe and effective.

Objective To evaluate the therapeutic results of embolectomy and thrombolysis for lower extremity deep vein thrombosis in 165 patients. Methods Embolectomy was undertaken with Fogarty catheter in 64 patients while 101 patients were treated by thrombolytic agents. Results Ninety-six cases (58.2%) were followed-up, ranging from 7 months to 218 months with an averge of 71 months including 44 cases undergoing embolectomy and 52 cases receiving thrombolytic agents. Symptoms disappeared in 20.5% of patients in embolectomy group and in 13.5% in thrombolytic group.In embolectomy group,the superficial varicoses and derma pigmentation in lower extremity appeared in 31.8% of patients,while in thrombolytic group the signs appeared in 50.5% of patients, respectively.Conclusions Embolectomy protecting the valve of deep trunk vein in some patients helps to reduce later complications of lower extremity deep venous thrombosis.

Alternative splicing is a process refering a pre-mRNA transforms to different mature mRNAs by different splicing sites combination, and then the mRNAs translate to various proteins.This process is regulated by a variety of cis acting elements and trans acting factors.Recent studies have shown that aberrant alternative splicing is prevalent in leukemia patients, and is closely associated with leukemic occurrence, development and chemotherapy resistance.This shows us that aberrant altemative splicing may be helpful to leukemia diagnosis and treatment.

AIM: To investigate the effects of nitric oxide(NO) and caspase-3 on dopamine-induced apoptosis in PC12 cells. METHODS: Flow cytometric assay was used to quantify the apoptotic cells. The morphological of apoptotic cells was evaluated by terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling(TUNEL). Nitrite was quantified by Griess reaction. Inducible nitric oxide synthase(iNOS) mRNA was identified by semiquantitative reverse transcription polymerase chain reaction(RT-PCR). Caspase-3 activity was determined by fluorescent spectrofluorometer. RESULTS: Dopamine induced PC12 cells apoptosis in a concentration-dependent manner (0.15-0.60 mmol/L), with positive TUNEL staining. During the development of apoptosis, the expression of iNOS mRNA and the levels of NO increased markedly, so did caspase-3 activity(P

Aim To establish a method of hydrodynamic-based transfection(HBT) and provide a means in rats of the gene therapy of liver diseases,which allowed an efficient expression of rIL-10 gene in rat liver.Methods Using rIL-10 gene as a reporter gene,different volumes and doses of plasmid DNA solutions were rapidly injected into rat tail vein,then the serum and the tissue of liver,kidney,lung,spleen and heart in different time were collected and the expression of rIL-10 was detected by the methods of RT-PCR,ELISA and immunochemistry.Results Using rIL-10 gene as a reporter gene,the results demonstrated that an efficient transfer and expression of rIL-10 in rat liver could be achieved by a rapid injection of a large volume of rIL-10 DNA solution into rat via tail vein.Maintaining a stable expression of rIL-10 in serum could be assessed by repeated administration.Conclusion The HBT was a simple,convenient and efficient method of gene transfer and expression in rats,which could be used as an effective means to study further gene therapy of rIL-10 in liver diseases.

Objective To evaluate the efficacy of intraluminal catheter-directed thrombolysis in treatment of lower limb acute deep venous thrombosis(DVT).Methods Thirty-six consecutive patients with lower limb acute DVT underwent intraluminal cathter-directed thrombolysis with urokinase continuous infusion immediately.The circumferences of the normal and affected limbs were measured before and after lysis,the venous patency scores and the rates of patency improvement were observed by venograms,together with follow up record after 6 months.Results After lysis,the circumferencial differences in thigh and calf showed significant difference(P

Objective To evaluate the efficacy of catheter-directed thrombolysis in the treatment of lower limb acute deep venous thrombosis(DVT). Methods One hundred and four patients with lower limb acute DVT underwent cathter-directed thrombolysis with continuous infusion of urokinase(154.27 ? 76.31 ? 104 IU). Fourteen pationts were implanted with stents for the residual stenoses. The circumferences between normal and affected limbs were measured before and after the thrombolysis. The venous patency score, the rate of patency improvement were eveluated by venography and the patients were followed up for six months. Results After thrombolysis, the venography revealed that venous patency improved in 92 patients(mean 52.42% ? 16.37%, P

Objective To construct and identify recombinant expression plasmid of small interfering RNA (siRNA)targeting hepatitis B virus X protein(HBx), and observe its effect on mitoehondrial function in healthy liver cell line steadily expressed HBx gene (HL-7702/HBx). Methods Two siRNA sequences containing short hairpin structure, which target on the total length HBx gene, were synthesized and cloned into the vector psiRNA-Hh1GFPzeo to eonstruct recombinant expression plasmids pX1 and pX2. Non-specific recombinant pScr plasmid served as control. After siRNA transfected into HL-7702/HBx cells line by liposome, reverse transcription-polymerase chain reaction (RT-PCR) and Western blot were performed to identify the suppressive effect on HBx expression. Levels of intraeellular reactive oxygen species (ROS) and mitochondrial membrane potential (△ m) were determined by flow cytometry. The experimental results were compared by analysis of variance. Results Successful constructions of pX1 and pX2 were confirmed by restriction enzyme digestion and sequencing. The expressions of HBx mRNA and protein after 48 h of transfection into HL-7702/HBx cells in control group were 0.65± 0.12 and 0.62± 0.09, respectively, which were both higher than those (0.33±0.10 and 0.19±0.08, respectively) in group pX1 (t=4.73, P<0.05; t=7.53, P<0.05) and those (0.48±0.10 and 0.37±0.11, respectively) in group pX2 (t=2.39, P<0.05;t=4.43,P<0.05). But the inhibition of group pX1 was stronger than that of pX2 (t=2.28,P<0.05). Levels of ROS and △ m after RNA interference were 5.00±0.38 and 33.86±0.50, respectively, while those in control group were 72. 10±0. 55 and 3. 57±0.26, respectively (ROS: t=276.22, P<0.05; △ m: t=107.15, P<0.05). Conclusions siRNA targeting HBx can efficiently and specifically suppress the HBx expression in HL-7702/HBx cells, and decrease the level of ROS and increase the level of △ m, thus relieve cellular oxidative stress.

Objective To develop improved enzymatic creatinine(Cr)assay reagents (self-R&D),and to investigate their appli-cation on serum detection by comparing with imported commercial Cr reagents(enzymatic Cr reagents from Toyobo)Methods En-zymatic method was used to evaluate the effect of every component and different concentrations of reagents on Cr assay by detecting the alteration of absorbance of Cr before or after the reaction.Meanwhile,the blank absorbance and analysis sensitivity of self-R&D and imported reagents,the technical indicators of precision,linearity,as well as method comparison of self-R&D reagents,were de-tected on the same automatic biochemical analyzer.Results The blank absorbance of self-R&D reagents was 0.009,and the detec-tion sensitivity was 0.13,better than that of imported Cr reagents.The coefficient of variation (CV)of high and low values of ser-um of self-R&D reagents were 1.5%,and 1.1%,respectively.The linear range was 0-2 850 μmol/L and the method comparison result was Y =0.98X +1.15 (r =0.999).The expected bias was less than the allowable error region.Using relative deviation≥10% as an index to evaluate the existence of significant interference,it shows that 35 mmol/L of creatine,3.42 mmol/L of biliru-bin,0.03 g/L of vitamin C,5 g/L of hemoglobin and 1450 FTU chyle in both low and high concentration serum samples did not interfere with the test result.Conclusion The quality of self-R&D reagents was good,and there was a good relativity between self-R&D reagents and imported Cr reagents with excellent quality.This indicates the self-R&D reagents could satisfy the application requirements of the clinics.