OBJECTIVETo evaluate the clinical results of dorsal approach and Weil osteotomy in treating the injury of the plantar plate in second metatarsophalangeal joint.

METHODSEight feet with plantar plate tear in five cases were treated by plantar plate repairment through dorsal approach and Weil osteotomy from June 2012 to December 2013. The mean age of the patients was 52 years old. All the patients were followed up for 6 to 12 months. American Orthopaedic Foot and Ankle Society (AOFAS) and visual analogue scale (VAS) were used to evaluate the clinical effect.

RESULTSThe second metatarsophalangeal joint stability recovered and the pain released in all patients. Postoperative VAS was lower and AOFAS was higher than preoperative.

CONCLUSIONCombined dorsal approach and Weil osteotomy can effectively release the pian of plantar plate, stabilize the metatarsophalangeal joint, decrease the incidence rate of postoperative subluxation and anchylosis in treating plantar plate tears in the second metatarsophalangeal joint.

Female ; Humans ; Joint Instability ; surgery ; Metatarsophalangeal Joint ; injuries ; surgery ; Middle Aged ; Osteotomy ; methods ; Plantar Plate ; injuries

OBJECTIVETo evaluate clinical results of plate on the metatarsal side to reconstruction of tarsometatarsal joint dislocations secondary to diabetic charcot foot.

METHODSSeven patients (9 feet) patients with tarsometatarsal joint dislocations secondary to diabetic charcot foot were treated with plating from April 2012 to December 2014. All patients were male, and 5 cases were on the unilateral side and 2 cases were on the bilateral sides. The age of patients ranged from 45 to 52 with an average of 48 years old. The history of diabetics was from 6 to 15 years. X-ray and CT were used to evaluate fractures healing,and AOFAS was applied to estimate recovery of joint function.

RESULTSAll patients were followed up from 12 to 24 months with an average of 19 months. All incisions were healed at stage I . No infection, loosening and breakage of internal fixation, bone nonunion were found after operation. According to postoperative X-ray and CT results, the time of fracture healing ranged from 10 to 20 weeks with an average of 16 weeks. Six feet got excellent results, 2 good and 1 moderate based on AOFAS scoring.

CONCLUSIONTarsometatarsal joint dislocations secondary to diabetic charcot foot treated with plate on the metatarsal side could obtain stable fixation and got satisfied early clinical results.

Adult ; Bone Plates ; Diabetes Complications ; surgery ; Diabetes Mellitus, Type 2 ; complications ; Female ; Foot Diseases ; etiology ; surgery ; Fracture Fixation, Internal ; Humans ; Joint Dislocations ; surgery ; Male ; Metatarsal Bones ; surgery ; Middle Aged ; Tarsal Joints ; surgery

Objective To evaluate the multi-slice spiral CT scan of liver dynamic dual-phase three-dimensional vascular imaging portal phase clinical value. Methods 80 cases in clinic, who were patients with liver function and imaging diagno- sis of liver and portal hypertension in liver cirrhosis, and 20 cases of healthy persons were carried out multi-slice spiral CT dual-phase scanning. The workstation used volume rendering techniques (VR) and maximum density multi-planar recon- struction technique for reconstruction. Results The hepatic arterial phase VR image and MIP MPR images can clearly show the celiac trunk, splenic artery, hepatic artery or artery and its branches, including 2-3 grade tumor blood supply variation of blood vessels and blood vessels, the portal venous phase, VR images and MIP MPR images clearly show the 1-6 level structure and the portal vein and hepatic vein branches of 1-3, with strong three-dimensional sense of space. Conclusion The multi-slice spiral CT three-dimensional reconstruction of portal vein imaging is a fast and effective non-invasive an- giography techniques, contributing to the clinical choice of reasonable efficacy of treatment programs and follow-up.

OBJECTIVETo explore effective approaches of treating elderly patients with distal tibiofibular fractures.

METHODSFrom August 2008 to October 2012,175 elderly patients with distal tibiofibular fractures were treated with locking compression plate (LCP) through anterior tibial. There were 112 males and 63 females with an average of 71.3 (ranged 60 to 83) years old. Of them,89 cases were treated by anterior tibial tension reduced incision with LCP,including 62 males and 27 females with a mean age of (71.8 +/- 6.4) years old. Eighty-six patients were treated by distal tibial incision with LCP,including 58 males and 28 females with a mean age of (70.3 +/- 6.7) years old. Swelling time, operation time, intraoperative blood loss, hospital stay, healing time, complications and AOFAS scores were compared between two groups after operation.

RESULTSSwelling time in anterior tension reduced incision with LCP and distal tibial incision with LCP was (5.6 +/- 1.3) and (9.7 +/- 2.1) days, healing time was (4.2 +/- 1.4) and (5.4 +/- 1.9) months,and complications were found 3 in tension reduced incision and 10 in distak tibial incision respectively;and all data shown statistically significant differences between two groups (P < 0.05). At 12 months after operation,AOFAS score was 89.0 +/- 9.7, 87.9 +/- 9.4; and there was no statistically significant difference between two groups (P > 0.05).

CONCLUSIONTension reduced incision through anterior tibial combined with locking compression plate fixation in treating elderly patients with distal tibiofibular fractures can provide good clinical effects with quick fracture healing and low complications.

Adult ; Aged ; Aged, 80 and over ; Bone Plates ; Female ; Fibula ; injuries ; surgery ; Fracture Fixation, Internal ; instrumentation ; methods ; Humans ; Male ; Middle Aged ; Minimally Invasive Surgical Procedures ; Tibia ; injuries ; surgery ; Tibial Fractures ; surgery ; Treatment Outcome

Objective: To investigate the changes of gene expression in CD34+ hematopoietic stem and progenitor cells (HSPCs) under different growth environments. Methods: Umbilical cord blood mononuclear cells (UCB MNCs) were cultured in static and stirred systems. After 7 days of culture, CD34+ cells were isolated and total RNA was extracted. Gene expression patterns of CD34+ cells from fresh, static and stirred cultures were compared using differential display (DD). Results: 30 gene fragments displayed differential expression levels based on the conditions of DD. One of differentially expressed genes was identified as RAN, which is a member of oncogene RAS family. This gene may be associated with proliferation of hematopoietic cells. Conclusion: Different growth environments induced differential gene expression patterns of CD34+ HSPCs. These differentially expressed genes would give new insights into optimizing in vitro environments for expanding hematopoietic cells.

Objective To study the role of hematopoietic growth factor(HGF)of placenta chorionic villus in fetal hematopoiesis during embryo ontogeny by observation of the appearance time and the content changes with the fetal growth, which was compared with HGF in cord blood. Methods Thirty embryo villus (2 g each) and 30 cord blood (2 mL each) were collected separately from early pregnant stage(6- 8 weeks), middle pregnant stage(16-22 weeks)and late pregnant stage (37-42 weeks). The levels of HGF were detected by enzyme - linked immunosorbent assay. Results HGF were produced on the early pregnant stage and the content of FL-T3,IL-3 increased gradually.There were significantly differences at different stages(P

AIM: To evaluate the efficacy and safety of two different surgical techniques on congenital cataract on children.METHODS: Twenty-two children (1-3 years old) with congenital cataract were randomly divided into two groups (group A and group B). With group A (10 patients, 20 eyes), we applied 23-gauge (23G) trans corneal limbus vitrectomy system to complete lens cortex gettering, posterior capsulotomy and anterior vitrectomy；With group B (12 patients, 24 eyes), we used the phacoemulsification I/A to complete lens cortex gettering, and performed anterior vitrectomy with anterior vitreous cutting instrument. After that, the differences in intraoperative and postoperative complications between two groups were compared. RESULTS：In group A, the width of corneal limbal incision was 0.6mm, the incision was self-sealing, and the anterior chamber was stable and iris did not prolapse during the surgery. In group B, the width of corneal limbal incision was 3mm, anterior chamber was unstable and intraoperative iris prolapse occurred in 14 eyes (58%). And the incision need to be stitched up after surgery. In the postoperative follow-up of 6-24 months (an average of 14 months), we found that corneal neovascularization did not occur in group A, while in group B, corneal neovascularization occurred in four eyes (17%); Other complications, such as posterior capsular opacification，retinal detachment, glaucoma, hypotony or endophthalmitis did not occur in either group.CONCLUSION: The 23G trans corneal limbus vitrectomy system used in pediatric cataract surgery is safer and more effective than phacoemulsification I/A. It is promising in treatment of congenital cataract on children.

The association rate constant and dissociation rate constant are important parameters of the drug-cyclodextrin supermolecule systems, which determine the dissociation of drugs from the complex and the further in vivo absorption of drugs. However, the current studies of drug-cyclodextrin interactions mostly focus on the thermodynamic parameter of equilibrium constants (K). In this paper, a method based on quantitative high performance affinity chromatography coupled with mass spectrometry was developed to determine the apparent dissociation rate constant (k(off,app)) of drug-cyclodextrin supermolecule systems. This method was employed to measure the k(off,app) of meloxicam and acetaminophen. Firstly, chromatographic peaks of drugs and non-retained solute (uracil) on β-cyclodextrin column at different flow rates were acquired, and the retention time and variance values were obtained via the fitting the peaks. Then, the plate heights of drugs (H(R)) and uracil (H(M,C)) were calculated. The plate height of theoretical non-retained solute (H(M,T)) was calculated based on the differences of diffusion coefficient and the stagnant mobile phase mass transfer between drugs and uracil. Finally, the k(off,app) was calculated from the slope of the regression equation between (H(R)-H(M,T)) and uk/(1+k)2, (0.13 ± 0.00) s(-1) and (4.83 ± 0.10) s(-1) for meloxicam and acetaminophen (control drug), respectively. In addition, the apparent association rate constant (k(on,app)) was also calculated through the product of K (12.53 L x mol(-1)) and k(off,app). In summary, it has been proved that the method established in our study was simple, efficiently fast and reproducible for investigation on the kinetics of drug-cyclodextrin interactions.
Acetaminophen ; chemistry ; Chromatography, Affinity ; Drug Interactions ; Kinetics ; Mass Spectrometry ; Thermodynamics ; Thiazines ; chemistry ; Thiazoles ; chemistry ; beta-Cyclodextrins ; chemistry

OBJECTIVETo study the autophagy activity between rat bone marrow stem cells (BMSCs) neural differentiation in order to explore the mechanism involve in this process.

METHODSBMSCs were passed by 3 generation, then was induced with the revulsant 2% (DMSO) + 200 µmol/L (BHA), NSE expression was detected by immunocytochemical stain, the mRNA expression of autophagy associated genes L3B, Beclinl, Atg5, Atg7, Atg10 were detected by RT-PCR, the autophagy protein LC3B was examined by Western blot and flow cytometry analysis.

RESULTSBMSCs were passed by 3 generation, the purity of BMSCs could reach more than 90%, the morphology of cells were like fibroblasts, after the revulsant 2% DMSO + 200 µmol/L BRA induced, cells were extended long neurites, like nerve cells, positive rate of NSE staining was (83±5) %, RT-PCR results showed that the expression of autophagy associated genes LC3B, Beclinl, Atg5, Atg7 Atg0 were rised after BMSCs neural differentiation, Western blot analysis showed that the LC3B-II protein expression was increased after neural differentiation and the MFI of L3B was highten by flow cytometry.

CONCLUSIONAutophagy is increased after rat BMSC neural differentiation.

Animals ; Autophagy ; Cell Differentiation ; Cells, Cultured ; Flow Cytometry ; Mesenchymal Stromal Cells ; cytology ; Neurons ; cytology ; Rats

The contents of schisandrol A, schisandrol B, schisantherin A, schisandrin A , schisandrin B, schisandrin C in Schisandrae Chinensis Fructus (SCF) were determined simultaneously by HPLC. Collect 100-seed weight, color, pulp content, longitude and latitude of SCF of different batches were collected. SIMCA-P and SPSS were applied to make PLS-DA analysis of 24 batches of SCF and correlation analysis of relevant parameters. According to the 13 parameters, SCF from three different places of origin could be distinguished effectively. It was found that the content of chemical component of SCF increased with latitude and longitude first, and then decrease. The results provide some theoretical basis for study of SCF genuineness and traditional method of identifying just from experience.
China ; Chromatography, High Pressure Liquid ; Drugs, Chinese Herbal ; chemistry ; Fruit ; chemistry ; Quality Control ; Schisandra ; chemistry ; classification