OBJECTIVE: To investigate the expressions of transforming growth factor beta1 (TGF-beta1) and bone morphogenetic protein-2 (BMP-2) in human mandible fracture callus and their quantity changes in the process of healing. METHOD: Thirty callus samples from the fractured mandible bone stumps were collected during operation, and two callus samples were collected from the angle-square jaw patients as controls. The expressions of TGF-beta1 and BMP-2 were test by the immunohistochemistry technic-SABC-staining in different periods of human fractured mandibular callus and in osseous tissue of normal angle of mandible. RESULT: The TGF-beta1 and BMP-2 were expressed in callus of different periods but not in normal bone tissue. The expression of TGF-beta1 increased slowly during the first three weeks after fracture and reached its maximum in the third week, and then weakened gradually. The expression of BMP-2 increased gradually during the first two weeks after fracture and reached its maximum in the second week, then the expression weakened gradually. CONCLUSION (1) BMP-2 may be one of the factors promoting the repair of fracture. (2) TGF-beta1 could be another signal pathway in repairment of fracture. (3) There could exist some synergistic effects between TGF-beta1 and BMP-2 in the process of fracture healing.
Adult ; Bone Morphogenetic Protein 2 ; metabolism ; Fracture Healing ; Humans ; Mandibular Fractures ; metabolism ; Middle Aged ; Transforming Growth Factor beta1 ; metabolism

ABSTRACT:In this study ,we aimed to analyze the transcription level of mitochondria gene Cytb in metacercariae ,larva‐30d ,larva‐60d ,adult ,and egg of Pagumogonimus skrjabini .The mRNA of metacercariae ,larva‐30d ,larva‐60d ,adult and egg of P .skrjabini were extracted with genomic extraction kit ,and transcripted reversely into cDNA .With 18SrDNA of Par‐agonimus westermani as an internal standard primer ,Cytb genes were amplified by real‐time PCR for establishing standard curves to evaluate the copy number of genes .Those quantitative analyses were reliable because the R value of standard curves was 0 .994 (>0 .98) ,and the melting curve showed a single peak .There were increasing trend of transcription of Cytb gene at metacercariae stage ,larva‐30d stage ,and larva‐60d stage .There were less transcription of Cytb gene at adult stage and no transcription at egg stage .There were differences about the transcriptional level of mitochondria Cytb gene at different stages of Pagumogonimus skrjabini ,and peaked at larva‐60d stage ,suggesting that Cytb gene may play a role in the development and migrating of larva .

This study was to evaluate the effect of individualized health education on blood glucose control in type 2 diabetic(T2D)Patients.Two hundred and thirty-eight T2D patients were randomly received individualized diabetes education(intervention group)or general education(control group).At 48 week,change of blood glucose control from baseline was observed.The blood glucose level and HbA1c in the intervention group were lower than those in the control group[(7.1±0.8)vs (9.3±6.5)mmol/L,(7.0 ±1.3)%vs(8.0%±1.0)%;P＜0.05].Thus,individualized diabetes education might be helpful for blood glucose control in T2D patients.

AIM:To explore the inhibitive effects of cervical lymphadenectomy on kerstoplasy after alkaline burns.METHODS:The Wistar rats' corneas were transplanted into Sprague-Dawley(SD)rats' eyes which were randomly divided into 4 groups:group A(control group);group B,the cervicallymphadenectomy group;group C,corneal transplantation after the alkali burn injury;group D,cervical lymphadenectomy following group C.Out of 6 rats in each group,the cornea of one rat Was used for mawophage immunohistochemistry at day 14 after the transplantstion,and the remaining 5 rats were used for studying corneal immune rejection with a slit lamp.The time when allograft rejection occurred was recorded and mean survival times(MST)were compared among the groups.RESULTS:Compared with the MST of group A(10.40±1.14 days),the MST of group B(46.30±9.46 days)Was significantly longer(P＜0.05).MST of grafts between group C(7.00± 1.58 days)and group D(15.00±3.39 days)was also significant (P＜0.05).At 14th day after the transplantation,there was no CD68 immunoreactivity in the graft of group B,and CD68 proteins were expressed to some extent in the grafts of group A and D.However,in the graft of group C,the expression of proteins Was dramatically up-regulated.CONCLUSION:Cervical lymphadenectomy therapy has a significant effect in preventing corneal allograft rejection in normal and alkali burned oorneai beds.

BACKGROUNDIn dental clinics, dentition defects are commonly restored with conventional porcelain-fused-to-metal fixed bridges. However, Ni-Cr alloy ceramic fixed bridges are known to have several drawbacks such as marginal coloration of the neck, low casting precision and, most seriously, poor biocompatibility. These problems could be circumvented by using noble metal ceramic bridges; however, one negative issue related to the conventional noble metal ceramic bridges is its high price due to the use of a large amount of gold for pontic. Therefore, an auro-galvanoforming ceramic bridge would be ideal to retain the advantages of a conventional material, yet reduce the amount of noble metal used. This study aimed to investigate whether any destructive changes occur to the auro-galvanoforming ceramic bridge under a fatigue cyclic loading test.

METHODSOn standard models which the left maxillary first premolar is lost and with the cuspid teeth and the second premolar as the fixed bridge abutment teeth, six maxillary auro-galvanoforming ceramic bridges and six corresponding nichrome ceramic jointed crowns were made as group A, six nichrome ceramic bridges and six corresponding nichrome ceramic jointed crowns were made as group B (control group). And then all specimens were fixed and tested on a fatigue cyclic loading machine; the changes occurring to the surfaces of occlusal contact with large functional area and to the porcelain-metal interfaces of the nichrome primary copings margins were observed through a scanning electron microscope (SEM).

RESULTSIn 120 hours' continual observation, none of the specimens had porcelain coating fractures or scraping occurrence and all of the porcelain coatings had been kept intact under sinusoidal cyclic loading with the load range of 120 - 200 N and frequency of 5 Hz.

CONCLUSIONSAuro-galvanoforming ceramic bridges exhibited excellent fatigue strength in the fatigue cyclic loading test and may satisfy the clinical demand in theory, while the practical application shall be evaluated by observations in long-term clinical usage.

Ceramics ; Dental Stress Analysis ; Denture, Partial, Fixed ; Gold ; Humans

Objective To assess the quantitative relationship between the distribution of Himalayan marmot and its ecological environment,the terrain,the temperature and the precipitation,using remote sensing and geographic information system in Qinghai province.Methods The distribution of Himalayan marmot was located by Google Earth and ArcGIS software and by using field survey data provided by Chinese Center for Disease Control and Prevention.The corresponding ecological environment of marmot including terrain,temperature and precipitation were derived from the spatial information datasets.All results were processed according to the overlay and statistics analysis using ArcGIS software.Results Seventy-seven point twenty-seven percent(153/198) of Himalayan marmot were distributed in the area of elevation between 3000 and 4000 meters.The number of marmot reached the highest when the slope was between 0 and 17 degrees,and aspect range was between 91 and 270 degrees,180 degree was as south direction.During the period with the maximum temperature of the warmest month of 14.3-17.5 ℃,17.6-20.8 ℃ and 20.9-24.0 ℃,the distribution of marmot reached 95％(186/198) of the total area.Meanwhile,most of the marmot were presented in the area with average precipitation of 46-108 mm.Conclusions A quantitative analysis of appropriate ecological environment of Himalayan marmot in a large scope is carried uul successfully using remote sensing and geographic information system.The study indicates that spatial information technology has important applications in plague prevention and control.

OBJECTIVETo study the clinical characteristics of urticaria in children versus adults, and to provide reference for the etiological analysis, disease evaluation, and treatment of urticaria in children.

METHODSThe clinical data of 2 411 patients with urticaria who visited the Department of Dermatology at Xiangya Hospital of Central South University from January 2013 to May 2017 were collected to study their socio-demographic characteristics. The clinical characteristics of urticaria were compared between the 68 children and 672 adults of the 740 patients with complete follow-up data.

RESULTSAmong the 411 pediatric patients, 314 (76.4%) had acute urticaria; among the 2 000 adult patients, 896 (44.8%) had chronic spontaneous urticaria. The causes of acute urticaria in children included infection (41%, 16/39). The accompanying symptoms of acute urticaria in children mainly included abdominal pain and diarrhea (44%, 17/39), while those in adults mainly included chest distress and shortness of breath (32%, 11/34). Compared with the adult patients, the pediatric patients had significantly lower chronic urticaria activity scores before and after treatment (P<0.05), a significantly higher rate of response to second-generation antihistamines (82.1% vs 62.2%; P<0.05), and a significantly higher proportion of individuals with a personal and family history of urticaria (P<0.05).

CONCLUSIONSAcute urticaria is more commonly seen than chronic urticaria in children with urticaria, and the main accompanying symptoms are abdominal pain and diarrhea, which are different from adults with urticaria. Chronic urticaria has a better treatment outcome in children than in adults. The most frequently seen cause of acute urticaria is infection in children. Atopic children may be susceptible to urticaria.

Adolescent ; Adult ; Aged ; Child ; Child, Preschool ; Female ; Humans ; Male ; Middle Aged ; Urticaria ; drug therapy ; etiology ; Young Adult

In this study, a 15-mer phage display peptide library was employed to pan against human rotavirus immobilized on solid phase. 4 different peptides were selected and could bind with rotavirus particles specifically. Plaque reduction neutralization test and MTT analysis results indicated that 3 of the peptides can inhibit rotavirus infecting in vitro. A peptide which sequence is QSNPIHIITNTRNHP showed the best efficiency--93% neutralization infectivity. Two other peptides, A and B, showed 40% and 50% neutralization infectivity respectively. Amino sequence analysis results indicate the 3 peptides containing 2 conserved motifs: SNPIHII and NIP. No putative trypsin hydrolysis site was found in C peptide, however, 4 and 3 potential sites were found in A and B peptides respectively. Using trypsin inhibitor, both A and B peptides showed the similar antiviral effect as that of C peptide. It suggests that the intactness of the 2 conserved motifs play an important role in counteracting virus infection. According to the results of this study, peptide C is hopeful to be exploited as an antiviral peptide drug.
Amino Acid Sequence ; Animals ; Antiviral Agents ; isolation & purification ; pharmacology ; Cell Line ; Cell Survival ; drug effects ; Dose-Response Relationship, Drug ; Drug Evaluation, Preclinical ; Humans ; Molecular Sequence Data ; Neutralization Tests ; Peptide Library ; Peptides ; chemistry ; immunology ; pharmacology ; Protein Binding ; Rotavirus ; drug effects ; growth & development ; immunology ; Sequence Analysis, Protein ; Viral Plaque Assay

OBJECTIVETo introduce the process and outline of fluoroscopy-based navigation system assisted anterior cruciate ligament (ACL) reconstruction, and evaluate its feasibility and accuracy.

METHODSFrom September 2005 to February 2006, there were 30 cases ACL rupture patients who received fluoroscopy-based navigation system assisted arthroscopy operations for ACL reconstruction (navigation group). At the same time, there were 40 patients who underwent traditional ACL operation (traditional group). For the navigation group, the proper placement of femoral and tibial tunnels was planned preoperatively in standard AP and lateral X-ray view. Intraoperative fluoroscopic images were taken and input into navigation computer system to form the virtual interactive working fields. After placement and registration, signals from patient trackers, which fixed on the distal femur and tibia respectively, and tool trackers, which attached with ACL tibial and femoral guide, were captured by the optic navigation camera and the navigation computer system could pursue the real-time position of the ACL tools and projected into working field to help precise placement of femoral and tibial tunnels. Then results of two groups were observed and evaluated.

RESULTSFor navigation group, the mean time extension was 20 min. The tibial tunnel position was measured in all these cases. The tibial tunnel position of navigation group was 45.90% (SD 2.36%), and the traditional group was 41.05% (SD 6.01%). The difference was statistically significant (P < 0.05).

CONCLUSIONFluoroscopy-based navigation system assisted ACL reconstruction improves the accuracy and reproducibility of the tunnel placement.

Adolescent ; Adult ; Anterior Cruciate Ligament ; surgery ; Arthroscopy ; methods ; Bone-Patellar Tendon-Bone Grafting ; methods ; Female ; Femur ; surgery ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Reconstructive Surgical Procedures ; methods ; Retrospective Studies ; Surgery, Computer-Assisted ; methods ; Tibia ; surgery ; Treatment Outcome