Objective:To build a three-dimensional finite element model of child temporomandibular joint including the mandible with chincap,and provide a basic condition for the study of the effects of chincap on the stress distribution of the base of mandible.Methods:The model was constructed from a child who accepted the treatment of chincap by ANSYS 5.6,using the reconstructive technique of spiral CT in combination with the three-dimensional finite element.The model consisted of 20045 bricks and 4442 nodes.On the model,mandible retraction was simulated under the different traction which included the different directions and magnitudes.Results:Three-dimensional model of the `Temporomandibular joint-mandible-chincap system of child' was established,which was better suited for the actual and practical situation of chincap in clinic,and the loading point and the different directions and magnitudes were determined by clinical application.Mechanical changes of various parts of the model in different working conditions could be simulated by means of adding different material properties and boundary conditions.Conclusion:The established model could be used for the study of stress distribution of chincap applying simulation.

BACKGROUND:Autologous peripheral blood stem cels have pluripotent characteristics, promote ischemic limb angiogenesis, improve and restore the blood supply to the affected limb.
OBJECTIVE:To observe the therapeutic effect of autologous peripheral blood mononuclear cel transplantation in rats with thromboangitis obliterans.
METHODS:Twenty-four rats were randomized into control, model and granulocyte colony stimulating factor (G-CSF) groups. In the latter two groups, animal models of thromboangitis obliterans were established by femoral arterial injection of sodium laurate. In the G-CSF group, rats were injected with recombinant human G-CSF for 5 successive days for peripheral blood mononuclear cel mobilization, and then underwent peripheral blood mononuclear cel transplantation at day 7. In the control and model groups, rats were given normal saline injection.
RESULTS AND CONCLUSION:After modeling, foot dorsum temperature and the percentage of CD4+CD25+ regulatory T cels decreased significantly in the model and G-CSF groups, and the area of leg ulcers was enlarged notably in these two groups. In the G-CSF group, the number of white cels and percentage of CD34+ cels to mononuclear cels were increased at 6 days after mobilization; the foot dorsum temperature and the percentage of CD4+CD25+ regulatory T cels increased significantly at 1 month after peripheral blood mononuclear cel transplantation, which were close to the normal values. These findings indicate that autologous peripheral blood mononuclear cel transplantation folowing cel mobilization increases the percentage of CD4+CD25+ regulatory T cels in rats with thromboangitis obliterans, thus promoting relief of symptoms and ulcer healing.

Objective:To identify the factors that affect the duration of forced eruption of the impacted maxillary canines.Methods:Data of 46 successfully treated impacted maxillary canines with forced eruption were included.The relation of duration of forced eruption and the age of the patients(y),the distance between the impacted maxillary canine cusp tip and the occlusal plane(d),the angle be-tween the axis of the impacted maxillary canine and the occlusal plane(α),mesiodistal position of the canine cusp tip in relation to the adjacent teeth(ZB),the angle between the canine axis and the lateral incisor axis(β)was analyzed.Results:The results indicated a direct correlation of the duration of forced eruption with the patient age and d value,the more mesial location of the canine cusp tip to the midline,the longer treatment time was needed.In contrast,there was an inverse correlation between the duration of forced eruption and αvalue.Conclusion:The patient's age and the position of the impacted maxillary canines are the important predictors of the dura-tion of the forced eruption.

BACKGROUND:Studies have shown that neural stem cel transplantation has a certain effect on neuropathic pain, but the efficacy of transplanted cel number on neuropathic pain is not exactly understood. OBJECTIVE:To observe the effect of different amount of neural stem cels administered intrathecaly on the neuropathic pain and expression of glial-derived neurotrophic factor in the spinal cord dorsal horn and dorsal root ganglion in rats after partial sciatic nerve transaction. METHODS:A Sprague-Dawley rat at 14-16 days of pregnancy was used to prepare neural stem cel suspensions that were injected intrathecaly into rat models of partial sciatic nerve transaction at doses of 1×103, 1×104, 1×105, 1×106, 1×107cels per 30 μL, respectively. Additionaly, model group and sham-operated group were set up. Threshold values of mechanical and thermal pain were recorded 1 day before operation, 1, 3, 7, 14, 21 days after operation. Expressions of glial-derived neurotrophic factor protein and mRNA in the ipsilateral spinal cord dorsal horn and dorsal root ganglion were detected by immunohistochemistry and RT-PCR, respectively, at 7 and 21 days after partial sciatic nerve transaction. RESULTS AND CONCLUSION: Pain threshold values were decreased in al the groups except the sham-operated group at 1 day after operation, and reached the peak at 7 and 14 days after operation (P < 0.05). Compared with the model group, the pain threshold values and the expression of glial-derived neurotrophic factor protein and mRNA in the ipsilateral spinal cord dorsal horn and dorsal root ganglion were increased gradualy in a dose-dependent manner in the 1×104, 1×105, 1×106, 1×107 groups at 7 days after operation (P < 0.05). At 21 days post-operation, the pain threshold values showed no differences from the preoperative findings in the 1×105, 1×106, 1×107 groups, but the expression of glial-derived neurotrophic factor was significantly higher in the 1×105 group than the other groups (P < 0.05). Taken together, intrathecal transplantation of neural stem cels at a dose of 1×105 is the most effective in aleviating partial sciatic nerve transaction-induced neuropathic pain in rats.

Objective As a special type of chronic pancreatitis, autoimmune pancreatitis ( AIP ) is gradually being recognized?In 2001,researchers found that serum IgG4 levels were significantly increased in AIP patients,2% of chronic pancreatitis was 1?AIP; 1?AIP was considered a systemic disease associated with IgG4?So far,a number of autoimmune antigens associated with 1?AIP have been identified,but the role of IgG4 in the disease is certain,because the pathogenesis of the disease is not sure,the diagnosis and treatment of AIP is not optimistic.

TCM hospital preparation, which is only used inside its own orgnations, is an important part of clinical medicine in TCM. In recent years, the lack of a corresponding constitution of legal safeguard seriously hampered the prosperities of TCM hospital preparations. It's a high time to settle a targeted legal safeguard constitution of TCM preparations developed by the hospital. The author takes hospital of TCM preparation as the research object, starting from the current situation and problems of development of hospital of TCM to dig out the reasons. It has great significance to ensure the status of TCM preparation developed by the hospital at first, to combine with other measures. and to put forward about the establishment of comprehensive legal safeguard mechanism for the development TCM hospital preparation.

Objective To investigate the clinical characteristics of Takayasu′s arteritis (TA) and the difference between male and female patients. Method The clinical features of 159 patients with TA were retrospectively analyzed. Results In our series of patients, the ratio of male and female was 1:3.1. The average age of male and female patients at onset of first symptom was (32?13) years and (24?9) years respectively (P

Objective To reveal the epidemiological characterization of brucellosis in Shanxi province in recent years.Methods Retrospective investigation was made from the 105 diagnosed brucellosis cases in the first hospital affiliated to Shanxi medical university during 2013.1 ~2015.3.Results Peasants accounted for 89.52%and urban residents was 10.48% in 105 cases;male was the majority.Most cases were seen in late summer and early autumn.88.57% of the cases had clear history of epidemiology,and only 16.85% of those who got close contact with livestock took uncomplicated preventive measures.Conclusion Transmission mode of brucellosis has greatly changed in Shanxi province in recent years.Infected cases have increased year by year,and incidence ratio in urban residents is rising.Extensive breakout is replacing by fragmented scattering point.

A gas chromatographic method was established for determination of cholesterol. The egg yolk was directly saponified with 1ml 40% potassium hydroxide and 20ml ethylene glycol. The unsaponifiable substances were extracted by diethyl ether and then dried with anhydrous sodium sulfate. The extract (2?l) was injected into the gas chromatograph. The average percentage of recovery was 100.0?2.6%. The precision of the method was good, the coefficient of variation was 1.9%. The mean cholesterol content of egg yolk determined by this method was 1247.1?80.1 mg/100g and agreed with the value reported in literature.

With reformation and innovation in hospital management,hospital culture is playing a more important role than before in the development of hospitals.HEPA(Hospital Employee Assistance Program) is considered as the efficient means of enhancing hospital culture construction with "put the human fundamental" as its principal.This present article is going to introduce the origin,development and function of HEAP as well as the concept of hospital culture,indicating that HEAP may contribute to increment of employees' achievement,improvement of hospital management and enhancement of hospital culture construction.