Orthopedics virtual surgery system is a rapidly developing domain in recent years,and has exhibited a promising application.Currently,softwares about orthopedics virtual surgery system have already been applied in medical clinic and education.This paper reviewed present situation of this system,introduced some key technology such as medical image segmentation,registration and fusion,3D visualization and 3D interactive,and discussed main application such as orthopedics virtual surgery,surgical protocol,assisting clinical diagnosis,real-time chiri-cal consmlfation,assisting medical education,training and examination,rehabilitation care,prosthetic device,or guidance in surgery.In addition,the development trend of this system is predicted.With development of orthopedics virtual surgery system,the time of surgery will be consumedly economized and the risk of surgery will be reduced,greatly benefiting orthopedics.

Transpedicular screw fixation for cervical spine is the strongest spinal posterior fixation that could provide tri-column biomechanical stability,and it has been gradually identified as a quite high value in clinical application.The pedicle of vertebral arch is adjacent to vital neurovascular structures;thereby pedicle screw fixation in the cervical spine has been considered as a potential risk of injury and been limited in clinics.This study aims to review the studies on the current situation and progress of pedicle screw fixation techniques in lower cervical disease by investigating cervical pedicle morphology,biomechanical property,transpedicular screw insertion techniques and internal fixation system,computer assisted image-guided navigation,the indication,contraindication and complications of pedicle screw fixation.The article shows that preoperative careful evaluation for the morphology of the lower cervical pedicles,using kinds of new image guided techniques and meticulous techniques of screw placement in operation are essential in reducing operational risk and offering widely application.

OBJECTIVETo observe the effects of Xinshuai Mistura (XM) on plasma angiotensin II (Ang II), atrial natriuretic peptide (ANP) and N terminal pro- brain natriuretic peptide (Nt-proBNP) in patients with heart failure (HF).

METHODSFifty-nine patients with HF (NYHA class II-IV) were randomly divided into two groups, the treated group treated with XM and the control group with Wuling Pulvis (WP), both on the base of captopril treatment. The treatment course was two weeks. Plasma levels of Ang II , ANP and Nt-proBNP were observed.

RESULTSThe plasma levels of Ang I, ANP and Nt-proBNP showed an ascending tendency along with the increasing in severity of HF(P < 0.01), and significantly decreased after treatment in the treated group (P < 0.01), but with no remarkable difference as compared with those in the control group (P > 0.05).

CONCLUSIONXM had definite therapeutic effects on excessive neuroendocrine activation in HF patients.

Adult ; Aged ; Angiotensin II ; blood ; Angiotensin-Converting Enzyme Inhibitors ; therapeutic use ; Atrial Natriuretic Factor ; blood ; Captopril ; therapeutic use ; Drug Therapy, Combination ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Heart Failure ; blood ; drug therapy ; Humans ; Male ; Middle Aged ; Natriuretic Peptide, Brain ; blood ; Peptide Fragments ; blood ; Phytotherapy ; Single-Blind Method ; Treatment Outcome

Aged ; Aged, 80 and over ; Anthracosis ; blood ; C-Reactive Protein ; analysis ; metabolism ; Cross Infection ; diagnosis ; therapy ; Humans ; Male ; Middle Aged ; Pneumonia ; blood ; Serum ; chemistry

Objective To investigate the regulatory effect of miR-21 on ADAMTS-1 expression in pulmonary fibrosis model. Methods A mouse model of pulmonary fibrosis was established using bleomycin (BLM) anda model of pulmonary fibrosis was constructed in vitro , the expression level of miR-21 was measured by quantitative real-time polymerase chain reaction (qRT-PCR), while the protein expression of ADAMTS-1 was measured by Western blot. NIH3T3 were transfected with miR-21 mimics and inhibitor in vitro and the cellular expression of ADAMTS-1 was measured by Western blot. Results Compared with the blank group , in mouse models of pulmonary fibrosis , the miR-21 expressions in lung tissues at three time points after BLM-treatment were significantly up-regulated while an evident decrease in ADAMTS-1 expressions were observed (P < 0.01). In vitro pulmonary fibrosis model , NIH3T3 cells after TGF-β1 in concentration 5 μg/L stimulation down-regulated ADAMTS-1 expression and up-regulated miR-21 expression (P < 0.01). NIH3T3 transfected with miR-21 mimics and inhibitor, up-regulated miR-21 expression, while down-regulated ADAMTS-1 protein expression. Conclusions Up-regulation of miR-21 and Down-regulation of ADAMTS-1 might be involved in the progression of pulmonary fibrosis model; miR-21 could negatively regulate ADAMTS-1 expression.

Ten compounds were isolated from the artificially induced dragon's blood of Dracaena cambodiana by various column chromatographies on silica and sephadex LH-20 gel. Based on spectral analysis of NMR and MS, their structures were identified as 3, 4-dihydroxyallylbenzene (1), 3', 4', 5'-trimethoxycinnamylalcohol (2), pinoresinol (3), (2R)-7, 4'-dihydroxy-8-methylflavane (4), (2R)-7,4'-dihydroxy-5-methoxy-8-methylflavane(5),(2S)-7,3'-dihydroxy-4'-methoxy-8-methylflavane(6) ,(2S)-4',7-dihydroxy-6, 8-dimethylflavane(7), 4,2',4'-trihydroxychalcone(8), 4,4'-dihydroxy-2-methoxydihydrochalcon(9) and Cambodianin E (10). Antibacterial activity assay showed that compounds 1, 4 and 10 have inhibitory effect on Fusarium oxysporum f. sp. cuben, Fusarium oxysporum f. sp. niveum, Fusarium oxysporum f. sp. vasinfectum and Ralstonia solanacearum.
Antifungal Agents ; chemistry ; isolation & purification ; pharmacology ; Dracaena ; chemistry ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; pharmacology ; Fusarium ; drug effects ; Molecular Structure ; Plant Extracts ; chemistry ; isolation & purification ; pharmacology ; Spectrometry, Mass, Electrospray Ionization

OBJECTIVETo investigate the status of deciduous dental caries among preschool children in Chongqing city and to compare the oral health status of preschoolers from public and private kindergarten.

METHODSAccording to the criteria recommended by The Third National Oral Health Investigation, the deciduous caries of 5 030 preschool children aged 3 to 6 years old from 40 private kindergartens and 16 public kindergartens in Yuzhong district of Chongqing were examined. The prevalence of dental caries and the mean dmft and filling rate were calculated. The results were analyzed using SPSS 21.0 software package.

RESULTSMaxillary deciduous central incisors and mandibular deciduous molar were most prone to decay in 5,030 children. The prevalence of dental caries was 54.08% (2,720/5,030). The mean dmft score was 2.58 and the filling rate was 0.98% (127/12,993). The prevalence of dental caries and mean dmft increased gradually as the children were growing up (P < 0.05). The rate of filling teeth of the 6 year old group was higher than other groups (P < 0.05). No significant difference between males and females were noted (P > 0.05). The prevalence rate of deciduous dental caries among private kindergartens was 61.04% (1,656/2,713), with a mean dmft of 3.12 and filling rate of 0.35% (30/8,465). The prevalence rate of deciduous dental caries among public kindergartens was 45.92% (1,064/2,317), with a mean dmft of 1.95 and filling rate of 2.14% (97/4,528). Statistical analysis revealed significant differences in the prevalence rate, mean dmft, and filling rate between two kinds of kindergarten (P < 0.05).

CONCLUSIONDeciduous dental caries of preschool children is an important problem in Chongqing city and the children from private kindergarten had very low filling rate.

Child ; Child, Preschool ; China ; DMF Index ; Dental Caries ; Dental Pulp Cavity ; Female ; Humans ; Incisor ; Male ; Molar ; Oral Health ; Prevalence ; Tooth, Deciduous

Aged ; Aged, 80 and over ; Humans ; Kidney Diseases ; diagnosis ; etiology ; Male ; Middle Aged ; Nephelometry and Turbidimetry ; Pneumoconiosis ; complications ; Pulmonary Disease, Chronic Obstructive ; complications ; Retinol-Binding Proteins ; urine

CD56 Antigen ; metabolism ; Carcinoid Tumor ; diagnostic imaging ; metabolism ; pathology ; surgery ; ultrastructure ; Chromogranin A ; metabolism ; Follow-Up Studies ; Humans ; Kidney Neoplasms ; diagnostic imaging ; metabolism ; pathology ; surgery ; ultrastructure ; Male ; Microscopy, Electron, Transmission ; Middle Aged ; Phosphopyruvate Hydratase ; metabolism ; Synaptophysin ; metabolism ; Tomography, X-Ray Computed ; Vimentin ; metabolism

Adult ; Aged ; Aged, 80 and over ; Coal Mining ; Humans ; Lung Neoplasms ; complications ; microbiology ; Male ; Methicillin Resistance ; Microbial Sensitivity Tests ; Middle Aged ; Pneumoconiosis ; complications ; microbiology ; Staphylococcus aureus ; drug effects ; isolation & purification