Objective:To study the preparation technology of ambroxol hydrochloride double-layer tablets and evaluate the drug re-lease in vitro. Methods:The best technology was screened by orthogonal design, and the drug release in vitro was evaluated by UV spectrophotometry. Results:The drug release in vitro was in accordance with the corresponding standard. Conclusion:The preparation technology is simple and the quality is stable for industrial production.

[Summary] This paper reported a case of 4-year-old boy suffered with medial meniscus tear treated by arthroscopic repair in our hospital.After the boy injured his knee , plaster was applied for 4 weeks.Without any symptomatic progress , he was hospitalized with the diagnosis of medial meniscus tear .We performed arthroscopic meniscus repair , using 4.0-mm arthroscopy.At 3-month follow-up, the boy could full-bearing walk with no pain or discomfort , with a range of motion of 0°-135°.The post-operational MRI at the fourth month showed preliminary healing of repaired meniscus .We believe that regular arthroscopic instruments can accomplish meniscus repair in young children .

Objective To study the effect of TGF-?1 on the activation of ERK MAPK in human bronchial epithelial BEP2D cells. Methods Western blot was employed to examine the time-dependent activation of ERK MAPK by TGF-?1. BEP2D cells were harvested after treatment of human bronchial epithelial cells with 2 ng/ml TGF-?1 for 0, 10, 30, 60, 120, 240 and 480 min, respectively. Fluorescent dye staining and flow cytometry were employed to assess the apoptosis of BEP2D cells treated with vehicle, or with 2ng/ml TGF-?1, or co-treated with 2ng/ml TGF-?1 and 5?M U0126. Proliferation of BEP2D cells treated with vehicle, or with 2ng/ml TGF-?1 or 5?M U0126, or co-treated with 2ng/ml TGF-?1 and 5?M U0126 was assayed with colony-forming test, respectively. Morphological observation was performed to observe the morphological changes in BEP2D cells treated with vehicle, or with 5ng/ml TGF-?1 or 5?M U0126, or co-treated with 5ng/ml TGF-?1 and 5?M U0126, respectively. Results TGF-?1 activated ERK MAPK in BEP2D cell. The maximal activation of ERK MAPK took place at 60min after stimulation with 2ng/ml TGF-?1. TGF-?1 treatment effectively inhibited cell proliferation, and induced their apoptosis and epithelial-mesenchymal transition. Pretreatment with U0126, an inhibitor of ERK MAPK, significantly enhanced the TGF-?1-mediated anti-proliferation and apoptosis effects, and inhibited the effect of epithelial-mesenchymal transition of TGF-?1 in BEP2D cells. Conclusion TGF-?1-induced phosphorylation of ERK MAPK may participate in BEP2D cell proliferation and apoptosis regulation.

0.05).Conclusion The peptide growth factors can activate the Akt kinase by phosphorylation.This process depends on the production of H2O2 and the presence of PTEN.

A geometrical model of L4-L5 lumbar segment was constructed using a three-dimensional graphics software. Four conditions of the degenerated discs, i. e. light degeneration, moderate degeneration, severe degeneration and complete excision degeneration, were simulated with loading situations using finite element method under the condition of appropriate computational accuracy. By applying a vertical load of 378.93 N on L4 vertebral plate, stress nephograms on joint isthmus under four different working conditions were obtained. The results showed that the contacted area of facet joint was influenced by the degree of intervertebral disc degeneration level, which influenced the mises stress on joint isthmus. It was proved that joint isthmus was the important pressure-proof structure of the back of lumbar vertebra, and the stress values and distribution were related to structural stiffness of the back of lumbar vertebra as well as the contact area of facet joint. The conclusion could be the theoretical reference for the analysis of spinal biomechanics and artificial disc replacement as well.
Biomechanical Phenomena ; Finite Element Analysis ; Humans ; Intervertebral Disc ; pathology ; Intervertebral Disc Degeneration ; Lumbar Vertebrae ; physiopathology ; Models, Anatomic ; Pressure ; Zygapophyseal Joint

This article was aimed to research the processing methods of Mongolian Meng-Gen-Wu-Su. Ancient and modern literatures which are related to the processing methods of Meng-Gen-Wu-Su were reviewed, summa-rized and sorted . The results showed that the traditional Mongolian Me ng-G e n-W u-Su processing method began in the eighteenth century in the book of Bi Y ong Y ao Ji Zhu Pin . The processing methods of all previous dynas-ties can be classified into three steps, which are descaling, detoxicating and specific drug processing. The pro-cessing methods contain soft, heat, cold, even, obvious, fierce, slow, white, black, speed and hard method. Among these 11 kinds of processing methods from all previous dynasties, some of them use the same processing name but the processing method are different; and some of them use different processing name but the processing methods are the same. Hence, there are 7 kinds of processing methods according to the processing content. Among them, the sulfur processing of Me ng-G e n-W u-Su is widely applied . This processing method is still used today and it can be divided into two kinds, which are the heat process and cold process. This method was originated from the fierce processing and even processing method in the book of Gan Lu Si Bu. And steps of descaling and detoxicat-ing in the processing are ignored. Other processing methods have rarely been used or not used at all. It was con-cluded that the sulfur processing method of Mongolian Me ng-G e n-W u-Su is still used until now .

Objective To reconstruct three-dimensional femoral footprint of the anterior cruciate ligament(ACL) by dual-source CT(DSCT),which can provide a novel positioning system particularly applicable in the anatomic ACL reconstruction under arthroscopy. Methods DSCT scanning was performed for the bilateral knees of 30 healthy volunteers.Three-dimensional reconstruction of the lateral wall of the intercondylar notch was done with 64-slice spiral CT workstation(GE,Volume Share2-AW 4.4 version).Double-bundle footprints of the ACL femoral insertions were identified, outlined and marked on the three-dimensional models.The over-the-top junction of the distal femur and the trochlea of femoral lateral condyle was dotted as a reference point O.The femoral footprint long and short axes,the footprint angle between the line passing through 2 centers of anteromedial and posterolateral bundles and the femoral shaft,the distance between 2 bundle centers,the shortest distance from the footprint edge to the distal femoral cartilage,and the shortest distance from the footprint edge to the posterior margin of the femoral cartilage were measured on the models with a standardized scale. Results All the ACL femoral footprints were successfully reconstructed by DSCT in the 60 knee joints.They were relatively protruding,plain,irregular in shape but identical in grey scale,distinct areas on the image. On the three-dimensional models of femoral lateral condyle,a 3-point-2-angle positioning system applicable in arthroscopic anatomic ACL reconstruction was successfully established and used to define and describe the double-bundle insertions of ACL.The mean long and short axes of ACL femoral footprint were respectively 16.5 ± 1.8 mm and 8.0 ± 1.3 mm; the mean ACL footprint angle was 8.3° ±4.9°; the mean distance between 2 bundle centers was 7.8 ± 1.0 mm; the mean shortest distance from the footprint edge to the distal femoral cartilage was 1.6 ± 1.5 mm; the mean shortest distance from the footprint edge to the posterior margin of the femoral cartilage was 1.7 ± 0.9 mm. Conclusions Three-dimensional ACL femoral footprints can be clearly reconstructed with DSCT.Natural ACL femoral footprints vary from person to person,which indicates a need of individualized reconstruction in order to restore the anatomy in maximum.The 3-point-2-angle positioning system we have developed is just suitable for arthroscopic ACL reconstruction.

Objective To investigate factors and neonatal outcomes associated with histologic chorioamnionitis (HCA) in preterm premature rupture of membranes (PPROM).MethodsFrom Jan.2008 to Jun.2011,230 women with PPROM at 28 -33 +6 weeks of gestation undergoing deliveries in the Second Affiliated Hospital of Wenzhou Medical College were studied retrospectively.According to placental histopathologic findings,those patients were categorized into two groups,including 138 cases in histologic chorioamnionitis (HCA group ) and 65 cases in non-chorioamnionitis (control)group.Age,parity,gestational age of PPROM and delivery,latency period,oligohydramnios,white blood cell (WBC) count and serum C-reactive protein (CRP) level at admission and before delivery,the incidence of neonatal respiratory distress syndrome (NRDS),neonatal pneumonia,bronchopulmonary dysplasia,necrotizing enterocolitis,early-onset neonatal sepsis,abnormal brain sonography findings and mortality were compared between two groups.Results( 1 ) The incidence of HCA was 68.0.％ ( 138/203 ) in all 203 cases with PPROM.(2) The occurring ruptured membrane gestation in HCA group was ( 31.1 ± 1.5 ) weeks,which were significantly earlier than (32.0 ± 1.3 ) weeks in control group ( P ＜ 0.05 ).The level of CRP of (8.2 ± 14.9) mg/L before delivery in HCA group was significantly higher than (5.5 ±7.2) mg/L in control group (P ＜ 0.05).The rate of oligohydramnios and cesearean sections were 55.1％ (76/138) and 45.7％ (63/138) in HCA group,which were significantly higher than 30.8％ (20/65) and 29.2％ (19/65) in control group (P ＜0.05).There were no significant difference in patient's age,parity,WBC count and CRP at admission between two groups (P ＞ 0.05 ).The latency period did not show significant difference between (140± 116) hours in HCA group and (129 ± 125) hours in control group (P ＞ 0.05).(3) Using multivariable logistic regression models,oligohydramnios ( OR =2.937 ),gestational age of PPROM ＜ 32 weeks ( OR =2.352),serum CRP level ＞ 8 mg/L before delivery ( OR =4.923 ) and latency period ＞ 48 -168 hours (OR =4.439) were significantly associated with HCA (P ＜0.05).(4) The gestational age of delivery and birth weight of HCA group were significantly lower than those of control group [ ( 32.0 ± 1.5 ) weeks vs.( 32.7 ± 1.5 ) weeks,( 1680 ± 379) g vs.(2017 ± 333) g,respectively,P ＜ 0.05 ].The incidence of Apgar ＜7,abnormal brain sonograhy findings, neonatal pneumonia,bronchopulmonary dysplasia,early-onset neonatal sepsis and mortality in HCA group were significantly higher than those in control group [20.3％ (28/138) vs.7.7％ (5/65),14.5％ (20/138) vs.4.6％ (3/65),12.3％ (17/138) vs.3.1％(2/65),5.8％ (8/138) vs.0,6.5％ (9/138) vs.0,12.3％ (17/138) vs.3.1％ (2/65),respectively,P ＜ 0.05 ].The incidence of necrotizing enterocolitis ( 1.5％,2/138 ) in HCA group was higher than that of controlgroup(0) and the incidence of NRDS ( 18.8％,26/138) in HCA group did not show statistical difference with 21.4％ ( 14/65 ) in control group ( P ＞ 0.05 ).ConclusionsIt was found that HCA was significantly correlated with lower gestational age of PPROM,higher serum CRP level before delivery,prolonged latency period and oligohydramnios in PPROM.HCA could increase the neonatal morbidity and mortality.

Objective:To screen out the potential key genes of endotoxin tolerance (ET), and to provide theoretical and experimental evidence for treatment and prognosis of sepsis.Methods:①Experiment 1 (gene chip and bioinformatics analysis): ET related data set GSE47783 was downloaded from the Gene Expression Omnibus (GEO). The data set was obtained from lipopolysaccharide (LPS) stimulated mouse macrophages to establish sepsis model (LPS group) and ET model (ET group). IDEP 0.92 software was used to screen differential expressed gene (DEG) between the two groups, analyze gene ontology (GO), and locate the main functions and signaling pathways of differential genes. The protein-protein interaction (PPI) network of DEG was constructed by the Search Tool for the Retrieval of Interacting Genes Database (STRING) to screen core genes hepatitis A virus cell membrane protein receptor 2 (HAVCR2) for following up validation study. ②Experiment 2 (reproduction of mouse macrophage RAW264.7 model): RAW264.7 cells were cultured in vitro, the ET model (ET group, cells were cultured with 10 μg/L LPS for 24 hours and then with 100 μg/L LPS for 4 hours) and sepsis model (LPS group, cells were cultured with 100 μg/L LPS for 4 hours) were reproduced by LPS stimulation. Phosphate buffer saline (PBS) group was given equal volume of solvent PBS for 4 hours. The mRNA and protein expressions of HAVCR2 were detected by real-time fluorescence quantitative polymerase chain reaction (RT-qPCR) and Western blotting. ③Experiment 3 (RAW264.7 cells transfected with HAVCR2 lentiviral vector): to further clarify whether HAVCR2 was involved in the formation of ET, after knockdown of HAVCR2 in RAW264.7 cells by lentiviral short hairpin RNA (shRNA) technology, the ET model (HAVCR2 --ET group) was constructed again, and the control group (ET group) without knockdown of HAVCR2 was set up. RT-qPCR method was used to detect the mRNA expressions of macrophage polarization key proteins [arginase 1 (ARG1), CD206, tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), nitric oxide synthase 2 (NOS2)] in cells. Results:①Experiment 1: a total of 1 013 DEG were identified, compared with LPS group, 521 genes were up-regulated and 492 genes were down-regulated in ET group. The function of these DEG was to increase biosynthesis and reduce inflammatory reaction. Signal pathways were mainly enriched in Janus kinase/signal transducers and activators of transcription (JAK/STAT) , NOD like receptor, Toll-like receptor (TLR), TNF, hypoxia inducible factor-1 (HIF-1). The first up-regulated HAVCR2 in the ET group was selected as the target of the study. ②Experiment 2: the results of in vitro experiment showed that the mRNA expression of HAVCR2 after high-dose LPS stimulation was down-regulated as compared with PBS group, and the mRNA expression of HAVCR2 in ET group was significantly higher than that in LPS group (2 -ΔΔCT: 1.10±0.10 vs. 0.60±0.10, P < 0.05). The results of Western blotting were consistent with RT-qPCR results. ③Experiment 3: the mRNA expressions of ARG1 and CD206 in HAVCR2 --ET group were significantly lower than those in ET group [ARG1 mRNA (2 -ΔΔCT): 0.50±0.10 vs. 1.00±0.10, CD206 (2 -ΔΔCT): 0.73±0.10 vs. 1.00±0.10], and the mRNA expressions of TNF-α and IL-1β were significantly higher than those in ET group [TNF-α mRNA (2 -ΔΔCT): 2.20±0.10 vs. 1.00±0.10, IL-1β mRNA (2 -ΔΔCT): 9.00±0.10 vs. 1.00±0.10), with significant differences (all P < 0.05). There was no significant difference in the expression of NOS2 mRNA between the two groups. Conclusion:HAVCR2 is involved in the regulation of inflammatory factors downstream of sepsis and the formation of ET, which is expected to become a new therapeutic target of sepsis.

Objective To investigate the pathogenesis role of aquaporin 3 and aquaporin 9 in idiopathic polyhydramnios by detecting their expression and distribution in fetal membranes and placenta.Methods Twenty-one of term pregnancy women with idiopathic polyhydramnios were enrolled as patient group matched with 30 women with normal term pregnancy as control group.The expression and localization of aquaporin 3 and aquaporin 9 in fetal membranes and placenta were detected by real-time polymerase chain reaction and streptavidin peroxidase immunohistochemiscal staining.Results (1)The mRNA expressions of aquaporin 3 and aquaporin 9 were detected in amnion,chorion and placental tissue in both patient group and control group.Both aquaporin 3 and aquaporin 9 were demonstrated positive staining in the amnion epithelia,chorion cytotrophoblasts and placental trophoblast.(2)The ratio of aquaporin 3 and aquaporin 9 mRNA expressions in amnion in patient group comparing to those in control group were 5.00 and 3.25,while in chorion they were 2.03 and 2.08.When compared with those in amnion and chorion of control group,there was a significant difference(P<0.01).However,the relative change fold of aquaporin 3 and aquaporin 9 in placental trophoblast in patient group were decreased in comparison of those in control group,which also showed statistical difference(P<0.01).(3)The expression of aquaporin 3 and aquaporin 9 protein in anmion were 7.5 ±2. 0 and 11.1 ± 1.8 in patient group, while they were 5.3 ± 1. 6 and 5.6 ± 2. 3 in control group. In chorion, the expression of aquaporin 3 and aquaporin 9 protein was 7.5±2. 0 and 10. 0 ±1.6 in patient group, respectively, while in control group, they were 5.4 ±2.2 and 5.6±2. 1. When compared with those proteins in control group, it exhibited statistical difference (P<0.05). However, in placental trophoblast of patient greup,the expression of aquaporin 3 and aquaporin 9 protein were 3.5±1.4and 4. 0±2. 5, respectively, which were significantly decreased than 5.6±1. 3 and 7. 1±2. 9 in control group(P< 0. 05). Conclusions The alterations of aquaporin 3 and aquaporin 9 expressions in fetal membrane and placenta might be an adaptive response to idiopathic polyhydramnios. Further investigation should be needed to clarify the regulatory mechanism of aquaporin 3 and aquaporin 9 expressions.