As a classical problem of computational molecular biology, the multiple sequences alignment is also important foundational process. RNA is one of biological polymer, and is different from protein and DNA that the secondary structure of RNA is more conservative than its primary sequence. Therefore, RNA multiple sequences alignment require not only information of sequences, but also information of secondary structures which those sequences will form. Here, a program——QEA-MRNA, which based on quantum evolutionary algorithm(QEA) to align RNA sequences, is proposed. The program introduce a full crossover operator and a fitness function which considering the information of RNA premary sequence and secondary structure, and improving on prematurity controling and the convergent speed. The effectiveness and performance of QEA-MRNA are demonstrated by testing cases in BRAliBase.

10 and Foxp3 expression, reduce the IL-17 and ROR-γt expression and adjust Treg/Th17 immune balance; effect of 0.1 mg/mL FSN +0.1 mg/mL MTX is the most obvious.

BACKGROUND:In recent years, with the development of minimaly invasive techniques, the application of percutaneous pedicle screw fixation techniques gradualy become widespread, but in the percutaneous pedicle screw fixation for thoracolumbar fractures, due to lack of reduction apparatus or power defect, the reduction of the injured vertebra is poor. In order to improve this deficiency, we design a percutaneous pedicle screwsystem in order to achieve the desired effect of reduction.
OBJECTIVE:To investigate the two different effects for treating unstable thoracolumbar fractures by fixing RTS (rotation softened trauma fixation system) or SEXTANT screws under minimaly invasive technology.
METHODS:From October 2011 to June 2013, 50 patients who suffered from single-segment thoracolumbar fractures without any nerve-injured symptoms were treated by using percutaneous pedicle screws. Among them, 25 cases used Sextant screws; the others used RTS screws. Data were compared between the two groups, including the height of injured vertebrae, Cobb’s angle, visual analogue scale scores and Oswestry disability index 1 week, 3 and 6 months postoperatively, and during final folow-up.
RESULTS AND CONCLUSION:(1) Al patients were folowed upfor8-18 months. (2) The height of injured vertebrae and Cobb’s angle were restored in both groups, showing significant differences (P<0.01). The restoration of the height of injured vertebrae and Cobb’s angle was better in the RTS group than in the SEXTANT group after treatment (P< 0.05-0.01). (3) The visual analogue scale scores and Oswestry disability index were significantly better in the RTS group than in the SEXTANT group 6 months postoperatively and during final folow-up (P< 0.05). (4) These results suggest that both RTS and SEXTANT systems can effectively repair single-segment thoracolumbar fractures without any nerve-injured symptoms. However, it is clear that the recovery of the height ofthe vertebral body is more satisfied and the postoperative pain and dysfunctionweremore minor in the RTS group.

Objectives To evaluate the application of flow-through hybrization and gene chip (HybriMax) on human papillomavious (HPV) subtype detection in clinical.Method 3 086 sexually active females from out-patient department were selected for HPV subtype analysis using HybriMax. Cervical tissue samples were taken under the colposcope from 463 females who had cervical lesion for pathological analysis. The predictive value of HybriMax in cervical abnormality was compared with pathological results, which were used as a golden standard. DNA sequence in HPV E6/E7 region was performed among 80 females with HPV 16 positive by HybriMax to determine the accuracy of HybriMax.Results All 21 different subtypes were found and total HPV positive rate was 63.1%(1 947/3 086). Among the 21 HPV subtypes, 5 of them had a infection rate over 5% and they were HPH16(15.9%, 490/3 086), 58(11.2%, 346/3 086), 52(8.5%、261/3 086)、33(6.3%、195/3 086)、53(6.2%、192/3 086)、6(5.6%、172/3 086), and CP8304(5.0%、155/3 086). The sensitivity for high degree squamous intraepithelial dysplasia(HSIL, CINⅡ+CINⅢ) by HybriMax was 95.49%(95%CI=95.44%～98.27%), while specificity was 34.85%(95% CI= 32.59%～37.57%)、Positive predictive value for HSIL was 37.13%(95%CI=30.79%～40.96%),while negative predictive vale was 95.04%(95%CI=89.24%～98.44%). Eighty sequence results in E6/E7 region completely matched to HybriMax results.Conclusion HybriMax has a high accurate rate in HPV subtype diction with good sensitivity and specificity for HSIL and above. It is an effective method to detect HPV subtype in clinical.

Osteoclastic bone resorption and osteoblastic bone formation are coordinated as a coupled mechanism to effect the development of bone and to maintain bone homeostasis. Recently reported Eph/ephrin bidirectional signaling between osteoclasts and osteoblasts plays a pivol role in bone homeostasis and casts new light on coupling of bone resorption and bone formation, which is gaining more and more attention in researches of bone biology and bone diseases. The present article aims to address the researches on the Eph/ephrin bidirectional signaling between osteoblasts and osteoclasts with molecular constitution, mechanism of the signal transduction, biological significance and so on.

Objective To investigate the clinical features of polypoidal choroidal vasculopathy (PCV) in Chinese patients. Methods The clinical data of 71 continuous patients (142 eyes) who were diagnosed with PCV by fundus photography, fundus fluorescein angiography (FFA), indocyanine green angiography (ICGA) and optical coherence tomography (OCT) were analyzed retrospectively. Results Eleven patients (11 eyes) of 71 patients (142 eyes) were diagnosed with PCV to make up 15.49% and 7 75% of the numbers of patients and affected eyes respectivery. The patients included 7 males (63 6%) and 4 females (36 4%). The predominant location for these lesions was the macular region in 10 eyes (90 9%). Fundus examination demonstrated the reddish-orange nodular elevations in 6 eyes. ICGA revealed umbrellalike or twiglike branching vascular networks and polypoidal dilations at the vascular terminals of the branches in all patients, and feeder vassels within choroidal vascular networks were found in 8 eyes. OCT images of retinochoroidal structures showed prominent anterior protrusion of the orange subretinal mass corresponding to the polypoidal structure in the indocyanine green angiogram. An apparent discontinuity was observed in the highly reflective layer which delineates the polypoidal structure. Conclusions PCV mainly affects the male over 50 years and the eyes involved were mostly unilateral. Most of polypoidal vascular lesions are present in the macular area.

BACKGROUND:Now the filling material which is used for the treatment of osteoporotic compression fractures is mainly polymethacrylic acid (PMMA),but the PMMA as a permanent foreign body cannot promote bone regeneration,and has a downward extension of the possibility of mechanical properties with time prolonging,so a new type of filling material used to substitute PMMA is looking.OBJECTIVE:To investigate the effect and image characteristics of different filling materials on percutaneous vertebroplasty performing on a goat model of osteoporotic compression fracture.METHODS:Three vertebral fracture models were established on osteoporosis goats by using an appropriate mechanical stress.Under the G-arm X-ray machine,the fractured vertebrae was performed with percutaneous vertebroplasty and then filled with polymethyl methacrylate (PMMA),self-setting calcium phosphate cement (CPC) and recombinant human bone morphogenetic protein-2(rhBMP-2)/self-calcium phosphate cement.RESULTS AND CONCLUSION:① A total of 36 vertebral bodies of 12 goats were successfully performed with percutaneous vertebroplasty,and there was no significant difference in filling quantity among three materials (3.5±1.8) mL (P>0.05).Bolus resistance of PMMA was strong,but operative time was short,and the image was great;the bolus resistance of self-CPC and rhBMP-2/self-CPC was weak,operative time was long,but there was no leakage placeholde.②CT scanning results on the 2~(nd) day after surgery demonstrated that the three materials were disorderly distributed in the vertebral body,showing high-density patching shaping.Six out of 36 vertebral bodies were leakage,which was induced by PMMA (n=4),self-CPC (n=1),and rhBMP-2/self-CPC (n=1).③ Scanning electron microscope indicated that all materials in the PMMA group were not able to closely bind with host bone,but self-CPC and rhBMP-2/self-CPC were able to closely bind with host bone.The results suggested that rhBMP-2/self-CPC is characterized by long-term operation,short time of bone substitute,and stabilization of reconstructed spine.

Objective To research the clinical therapeutic effect and side effect of gesterol- pingyangmycin cream in interventional therapy of hysteromyoma. Methods 110 cases of hysteromyoma underwent interventional therapy who were divided randomly into two groups:group A with polyvinyl alcohol particle and group B with gesterol-pingyangmycin cream .By percutaneous catheterization in bilateral uterine arteriae using the technique of Seldinger,polyvinyl alcohol particle or gesterol-pingyangmyci cream were injected to blodk up the blood supply of hysteromyoma.The volume of hysteromyomas was measured with B-mode ultrasonography prior and post-treatment.The reaction of post-treatment and the changes of menstrual blood volume were observed . Results The menstruation turned to normal and or menstrual blood volume reduced obviously in two groups , the total effective rate was 95.49 . The volume of hysteromyomas diminished to 45.81 and 51.80 in 3 and 6 months,respectively after treatment.There was significant difference between prior and post-treatment(P

Objective To find an ideal method of DNA isolation from blood and especially from clotted blood and to minimize the volume of blood collected for laboratory and clinical tests.Methods DNAs were isolated from antiagglutinated and agglutinated blood samples from auricular veins of 30 healthy subjects. The DNAs of these samples were obtained by a nonenzymatic, nontoxic procedure optimized by us and determinated by agarose gel electrophoesis and PCR. Results The yields of DNA isolated from clotted blood and antiagglutinated blood were (40.2?8.86)mg DNA/L and (39.1?10.2)mg DNA/L, and purities were 1.87?0.11 and 1.92? 0.12. The DNAs that we isolated from all samples had high molecular weight and by PCR the dimorphism of ALU alleles of the 8th intron of t-PA was easy to be obtained, so they were complete and reliable. Conclusion This method is rapid, easy, efficient and nontoxic for isolation of DNA from clotted and fresh blood and meets requirements for clinical testing and molecular biology study.

Objective To discuss the MRI features and pathogenic mechanisms of lung cancer intramedullary spinal cord metastasis (ISCM). Methods Four cases with clinically and 3 cases pathologically proved lung cancer ISCM were analyzed retrospectively. Turbo spin-echo sequence T 1 and T 2 weighted images were acquired in all patients. T 1 weighted images were obtained after intravenous administration of Gd-DTPA in all patients. Results A total of 7 ISCM were displayed by MR studies. The tumor occurred in thoracic cord (3/7) and in medullary cone (4/7). The tumor involved the central aspect of the cord. The lung cancer ISCM showed hypointensity (n=1) or isointensity (n=6) on T 1WI and hyperintensity on T 2WI. The extensive cord enlargement with cyst formation or syringomyelia was common. On contrast study, all tumors showed marked homogenous enhancement with clear borders. Conclusion The lung cancer ISCM usually presented as solitary lesions with marked contrast enhancement. The extensive cord enlargement was common in all patients. Because of the limitation in the evaluation of lung cancer ISCM on MRI, definite diagnosis of lung cancer ISCM depended on combination of clinical and MRI data.