Objective To review the results of operative treatment of the distal radius fractures. Methods The group of 12 cases were classified accorded to universal classification. There was 1 case of type Ⅲ, 3 cases type ⅣA,2 cases type ⅣB, 5 cases type ⅣC and 1 case type ⅣD. Five of them were checked preoperatively by spiral CT and three dimensional evaluation. They were given respectively treatment by external fixation, by volar or dorsal buttress plate, with or without percutaneous K wires. Results The average period of follow up was 12 months. 9 cases were excellent and 2 cases were good. The excellent and good rate was 91.7%. Conclusions Operative interventions for intra articular fractures of distal aspect of the radius should be considered when non operation management failed. The spiral CT and three dimensional evaluation can reveal enough information about the fracture preoperatively. The proper operative method should be chosen according to the fracture type.

NKR and TLR are most important receptor superfamilies in innate immunity and act as first line of host defense against infection. Those receptors exert peculiar recognition mechanisms to sense danger signals and distinguish infectious nonself from noninfectious self. More importantly, they coordinate and regulate each other and therefore play major roles in initiation of innate immunity and also help to direct adaptive immune responses. The importance of recognition and interaction of those receptors are highlighted. The precise mechanisms can be harnessed to aid the rational design of therapy against infection, inflammation, cancer or autoimmune diseases.

Objective To explore the incidence,distribution and the risk factors of intracranial and extracranial artery stenosis in patients with ischemic cerebrovascular disease(ICVD)in Uygur and Han.Methods Both 165 Han and 108 Uygur patients of ICVD were detected by using DSA.The level of serum glucose and lipidemia were measured.Statistical analysis was used to evaluate the incidence,distribution and risk fators of intracranial and extracranial artery stenosis in Han and Uygur groups.Results 103(62.4%) cases in Han group and 70(64.8%)cases in Uygur group existed intracranial and extracranial artery stenosis,but there was no significantly difference between the two groups.There was no significantly difference in the distribution of cerebral arterial stenosis between Han and Uygur groups.In Han group,age,hypertension,smoking and low HDL were related to cerebral arterial stenosis(P

Objective To study the efficiency of reversing MDR by suppressing MDR1 gene with RNAi in K562/ADM cells. Methods For reversing MDR by RNAi technology, two different short hairpin RNAs (shRNAs) were designed and constructed into pGenSil-1 plasmid, respectively. They were then transfected into the highly adriamycin-resistant K562/ADM cell line. The RNAi effect on MDR was evaluated by real-time PCR, and Rhodamine123 (Rh123) efflux assy. Results The stable transfected clones showed varied degrees of reversal of MDR phenotype. Surprisingly, the MDR phenotype was completely reversed in two transfected clones. Conclusion This study demonstrates that MDR can be reversed by the shRNA-mediated RNAi in K562/ADM cells, which provides a valuable clue as to sensitizing multidrug-resistant hepatoma cells to anti-cancer drugs.

Objective: To establish a method for the quality standard of Biyankang granule. Methods: Scutellaria baicalensis Georgi and Puerariae Iobatae radix were identified by TLC. The content of baicalin was determined by HPLC with a Dubhe C18 column (250 mm × 4. 6 mm, 5 mm). The mobile phase was methanol and 0. 4% phosphoric acid with gradient elution. The flow rate was 1. 0 ml· min-1 and the detection wavelength was 280 nm. The column temperature was 30℃ and the injection volume was 10 ml. Re-sults:The spots in TLC were clear without any interference. A good linear relationship was shown within the range of 15. 02-300. 43 m g·ml-1 for baicalin (r=1.000 0). The average recovery of baicalin was 102.62% (RSD =0.72%, n =6). Conclusion: The method is specific with high accuracy and good reproducibility, which can be used for the quality control of Biyankang granule.

To discuss the ultrasonic testing intelligent infusion pump tubing bubble method. When the ultrasonic wave goes through the interface of two different media, the reflection occurs, refraction, transmission and other physical phenomena can occur because of a large extent acoustic impedance difference between water and air, which can be used in this physical phenomenon, by monitoring the ultrasonic energy (output voltage) can be obtained if the extent of the presence of bubbles and bubble exists within the infusion tube. By measuring the penetration of ultrasonic energy, we detected air bubbles within the infusion line. Ultrasound can accurately detect air bubbles in the infusion line, which is the main method of detecting air bubbles for infusion pump.

Specific detection of amatoxins and phallotoxins in body fluids is necessary for an early diagnosis of an intoxication with mushrooms.In this study, a rapid method for the simultaneous determination of α-, (β-and γ-amanitin, phalloidin and phallacidin in human urine and plasma was first developed by ultra-perform ance liquid chromatography-tandem mass spectrometry.Urine sample was directly injected into the separation system and plasma sample was initially prepared by precipitation of proteins with 1% acetic acid in acetoni trile.The toxin was analyzed on an ACQUITY UPLC HSS T3 column using a gradient program with a cycle time of 9 min, and detected by positive electrospray ionization tandem mass spectrometry in the MRM mode, and quantified by matrix-match standard solution.The detection limits (S/N = 3) of the toxins were within 0.2-1 μg/L and 0.1-0.5 μg/L for urine and plasma, respectively.The standard curves were linear in the range of 2-100 μg/L for urine and 1-100 μg/L for plasma.The average recoveries were 92.0%-108.0% and 85.0%-100.0% for the toxins spiked in urine and plasma, with RSDs of 1.0%-22.0% and 2.0%-22.0% (n = 6), respectively.The method was simple, selective and sensitive to detect the amatoxins and phallotoxins in urine and plasma for both clinical and forensic purposes.

A rapid method for the detection of tetrodotoxin(TTX) in human plasma and urine was developed by hydrophilic interaction liquid chromatography-tandem mass spectrometry. After a simple protein precipitation step was undertaken, the subsequent analysis of TTX was achieved on a TSK-gel amide-80 column using an ammonium formate-methanol-acetonitrile gradient with a cycle time of 13 min, and detected by positive electrospray ionization tandem mass spectrometry in the MRM mode, and quantified by matrix-match standard solution. It was found that linearity in urine was observed within concentration ranged from 3 μg/L to 500 μg/L, that in plasma 1 μg/L to 200 μg/L and that limits of detection(S/N=3) for urine and plasma were 1 and 0.3 μg/L, respectively. The average recoveries were 96%-108% and 100%-105% for TTX spiked in urine and plasma, respectively, with relative standard deviations of 1.7%-8.6% and 8.9%-16%(n=6). This method was simple, selective and sensitive to detect TTX in urine and plasma for both clinical and forensic purposes.

The occurrence of nanoparticle carriers has greatly changed the traditional remedies of gastric cancer and other malignant tumors which makes the chemotherapeutic drugs possess better distribution, better targeting, less side-effects, and the ability to withstand the drug-resistance of tumor cells. Utilization of nanoparticle carriers in lymph-targeted chemotherapy of gastric cancer can not only achieve a better curative effect,but also direct the operation and improve patients' quality of lives. It has an expansive application foreground.

Purpose:Expression of MEK-1 was studied by regulating ?V integrin and E-cadherin on MCF-7 breast cancer cells.Methods:Using cell transfected techniques site-mutated genes were inserted into MCF-7 cells and made MCF-7 cells containing MEK-1-GFP,Ala 222 MEK-1-GFP,Asp 222 MEK-1-GFP ,respectively. These cells were tested with immunoblot analysis and immunofluoresence technique to determined the change of MEK-1 expression and location of MEK-1 in cells.Results:Deactivated Ala 222 MEK-1-GFP inhibited the activity of MAPK,active Asp 222 MEK-1-GFP increased the activity of MAPK. Ala 222 MEK-1-GFP increased the expression of E-cadherin,did not increase the expression of ?V integrin and inhibited FAK phosphorylation. MEK-1-GFP and Asp 222 MEK-1-GFP did not affect the expression of E-cadherin ,but upregulated the expression of ?V integrin,increased FAK phosphorylation.Conclusions:MEK-1 regulated the expression of ?V integrin and E-cadherin,FAK is the key factor that induced signal pathway of ?V integrin. It is possible that MEK-1 regulated FAK phosphorglation by regulating expression of ?V integrin and E-cadherin.