The treatment of low mesioangular impaction of second molar is difficult because of the little crown exposure and the influence of the third molar.We used modified lingual arch as a stronger anchorage to upright the lower second molars combined with manufactured spring,the treatment procedure is simple and effective.

Objective To explore the mechanism of immune tolerance in chronic B hepatitis, the effects of HBV infection on the functions of macrophages and related mechanism of signal transduction by transfection in vitro were studied. Methods Peritoneal macrophages of mice were isolated regularly and cultured, transfected transiently with pcDNA3-HBV or pcDNA3 plasmid DNA and cultured under the stimulation of LPS. After 72 h, RT-PCR was performed to detect the expression of PreS1, TNF-? or IL-1? mRNA. To detect the expression of NF-?B RelA protein by FCM, and the level of nitric oxide in cultural supernatant was measured with Griess reaction. Results After being transfected with pcDNA3-HBV,peritoneal macrophages had the expression of PreS1 mRNA, but have lower level of TNF-?、IL-1? mRNA and transcriptional factor NF-?B, compared with pcDNA3-transfected control group; the level of nitric oxide in pcDNA3-HBV group was also decreased. Conclusions Transient transfection of pcDNA3-HBV could decrease the function of macrophages directly by inhibiting NF-?B activity and effector molecules production, which may be one of the mechanisms of immune tolerance in chronic B hepatitis.

[Objective] This paper analyzes and discusses the institutions of traditional Chinese medicine professional training curriculum for a reference of Chinese Medicine University computer science in training mode reform. [Method] From the aspects of training objectives and training courses to explore the way how the pharmaceutical advantages combine disciplines and computer science disciplines to take the characteristics, medicine and computer science training complex practical talents, set the computer analysis of professional training courses and the advantages of the characteristics of the training curriculum. [Results] Computer department of Chinese Medicine University should take special way of education, training content to selected projects. [Conclusion] Chinese Medicine University should cultivate medicine and modern medicine in the background, taking into account the general application of information technology personnel, taking into account the characteristics of pharmaceutical and computer professional features expanded project training.

Objective:To screen the high performance,specific and nontoxic anti HBV antisense oligonucleotide fragment.Methods:Taking 2.2.15 cells as cell model,the antisense oligodeoxynucleotides(ASON)toward the HBV regulation genesenhancerⅡ(HBV EFⅡ)were designed and synthesized.The role played by ASON in inhibiting the secretion and expession of HBsAg and HBeAg by the host cells was detected by ELISA method.The effect of ASON on prolifezation and metabolism of the cells was detected by MTT method.Results:The inhibitory rate of HBsAg by ASON was 92% and 75%,respectively,indicating that itsdifference from that of noncomplementary sequence control group(inhibitory rate was 11%)had considerable statistical significance( P 0.05).Conclusion:ENⅡ is one of the most important target oriented sequencial selective regions of research on anti HBV nature of antisense oligonucleotide.

0.05).The C myc and N ras protein expression of 2.2.15 were reduced after ASONs were used 3 days.There was a significant difference between ASON group and control group ( P

Objective To study the effect of erythropoietin（EPO） on PI3-K/Akt signal pathway of myocardial ischemia-reperfusion injury（I/R） in immature rabbits. Methods Thirty immature rabbits were randomly divided into two groups （n = 15/greup ）, The rabbits were intraperi- toneally injected with 2 ml of normal saline in control group, or 5 000 U/kg of EPO in treated group 24 h before I/R. The Langendorff isolat- ed perfused heart model was established, and the myocardial expression of PI3K, AKT and Caspase 9 were examined by immunohistochem- istry in 2 h after repeffusion. To monitor the myocardial apoptosis,we performed TUNEL in 2 h after reperfusion. Results The expression of myocardial PI3K and AKT in EPO group was significantly higher in EPO-treated group than those in control group. In EPO-treated group, the expression of myocardial caspase 9 was significantly lower than that in control group. The average optical density of myocardial PI3K, AKT and caspase 9 were significantly different between both groups （P 〈 0.01 ）.The number of apoptotic cell was significantly fewer in EPO- treated group than that in control group. The myocardial apoptosis index （AI）was significantly different between two groups （P 〈 0.01 ）. Conclusion EPO pretreatment can influence the PI3-K/Akt signal pathway and decrease the myocardial apoptosis,and significantly reduce the myocardial ischemia-reperfusion（I/R） injury in immature rabbits.

Abstract: Objective　To analyze the risk factors for HIV/AIDS mortality after receiving antiviral treatment in Tongchuan City, and to provide a scientific basis for implementing precision treatment in Tongchuan City. Methods　A retrospective cohort study was conducted to collect general demographic characteristics and survival-related information of HIV/AIDS individuals who received antiviral treatment in Tongchuan City from 2005 to 2023. Mortality table analysis was used to assess the cumulative survival rate, Cox regression model was used to analyze survival influencing factors, and a nomogram was constructed to predict the prognosis of antiviral treatment. Results A total of 410 HIV/AIDS patients underwent antiviral treatment, with the shortest observation period being 0 months and the longest 222 months, and the median survival time was 71 months (QR: 64-106); among the 362 cases followed up, there were 39 AIDS-related deaths. The cumulative survival rates after 1, 5, and 10 years of antiretroviral therapy were 96.2%, 91.3%, and 83.0%, respectively. Multivariate Cox analysis showed that patients with a higher level of education (college degree or above) (HR=0.349, 95%CI: 0.159-0.769) and without clinical symptoms (HR=0.357, 95%CI: 0.178-0.715) had a lower risk of death after antiretroviral treatment, whereas patients with a CD4 cell count <200 cells/μL group (HR=9.383, 95% CI: 2.879-30.578) had a higher risk of death. Based on the above three influencing factors, a nomogram model was constructed. Internal validation showed that the model's discriminative ability with a C-index of 0.859 (95% CI: 0.762-0.956), and the calibration curve indicated good consistency, demonstrating the model's good predictive ability. Conclusions　Tongchuan City should expand health education on AIDS prevention and control, strengthen HIV monitoring, carry out education on compliance with antiviral treatment among HIV/AIDS individuals, conduct timely CD4 cell count detection, and use the constructed nomogram model to assist in precise diagnosis and treatment in clinical practice.

Objective To explore the correlation of human epidermal growth factor receptor type 2 overexpression (HER-2+)and mammographic and clinical features in breast cancers with estrogen receptor negative expression (ER-).Methods 190 cases of ER-breast cancer were included in this study.There were 78 cases with HER-2+,and 112 cases with HER-2-.The pathological and mammographic features were compared between the two groups.Results Compared with the HER-2- group,the HER-2+ group was more in older women (P<0.001)and more likely to have a lymphonodus metastasis (P=0.011).For mammographic manifesta-tions,pure calcifications were more detected in the HER-2+ group (P=0.000),and pure masses were more detected in the HER-2-group (P<0.001).The HER-2+ group was more likely showed as a lobulated mass (P<0.001),and with spiculated margin (P=0.000). However,the HER-2- group was more likely showed as a round mass (P=0.014),and with smooth margin (P=0.000).The cal-cifications of HER-2+ group were more likely showed as malignancy calcifications (P=0.000).Conclusion HER-2 overexpression breast cancer with ER- has some mammographic and clinical features,which is helpful for individual diagnosis and treatment.

Double-blind randomized controlled trial design is the most recognized scheme of therapeutic experimental design.On the assessment of the efficacy of traditional medicine, randomized controlled clinical trial design also has the same value.Only when using the research method towards epidemiology to perform the rigorous design on the clinical trial of traditional medicine and make the objective evaluation of its effect, can it get the real understanding and approval from modern medicine.When making the therapeutic clinical trial under the traditional medicine, due to the characteristics of the subject, therapeutic measures usually need to be changed so they cannot be standardized, and the modification may result in the share of multiple intervention components, which leads to the inaccurateness of results under the effect of confounding bias.According to the characteristics of traditional medicine, a new method was proposed for therapeutic clinical trial.Firstly do the randomization with the inclusion criteria made by the same symptom arise in a certain stage of disease, secondly adopt the standardized intervention measures for processing.Eventually confirm whether there is significant statistical difference.The symptom directing standardized interventions have provided the experimental design of the traditional medical clinical therapy with a feasible scheme, which can solve several problems existing in this design.

Objective To investigate the effects of Dihuang-Yinzi on cognition and energy metabolism of AD (Alzheimer’s disease) mice. Methods 60 Male APPsw/PS1ΔE9 mice were divided into 5 groups model, positive drug (Aricept), high, medium and low dosage of Dihuang-Yinzi. C57BL/6J mice with same age were served as normal control. All groups were orally administrated for 150 days. The spatial memory and passive avoidance were measured. The energy charge, activity of complex I, II and IV of respiratory chain, enzymatic activity of ATPase and mitochondrial membrane potential were assayed. Results APPsw/PS1ΔE9 mice showed significant impairments in cognition and energy production [(0.39±0.02),(3.28± 0.37)μOD/(min?μg),(0.19±0.04)mOD/(min?μg),(0.26±0.03)mOD/(min?μg),(0.19±0.02),(0.30±0.03)、(3.49±0.73)]with compaired to normal control[(0.57±0.06),(8.74±1.57)μOD/(min?μg),(0.43± 0.02)mOD/(min?μg),(0.69±0.02)mOD/(min?μg),(0.65±0.02),(0.51±0.01),(7.41±1.28)]. Dihuang-Yinzi ameliorates cognition decline, promotes acitivity of energy production related enyzmes, and restores mitochondrial membrane potential in AD mice[(0.57 ± 0.07),(8.42 ± 1.74)μOD/(min ?μg),(0.64 ± 0.03)mOD/(min?μg),(0.68±0.04),(0.55±0.01),(6.69±1.03), P<0.01 or 0.05]. Conclusion Dihuang-Yinzi could improve cognition and energy metabolism of APPsw/PS1ΔE9 mice by protecting mitochondria from pathologic injury.