MicroRNAs are one kind of endogenous noncoding small-molecular RNAs,which play an important role in regulating gene expression,cell proliferation and differentiation and a series of life activity.Hepatocellular carcinoma is a common malignant and life-threatening tumor with a high incidence and low 5-year survival rate.In recent years,the results of researches show that microRNAs in hepatocellular carcinoma have the function of oncogenes or tumor suppressor genes as well as having a close relationship with the occurrence,progression,diagnosis,treatment and prognosis of hepatocellular carcinoma.

Objective To evaluate the effect of smecta on acute gastroenteritis induced by the radiotherapy in human cervical cancer.Methods seventy-eight patients under radiotherapy received smecta combined with general medicine to control gastroenteritis. All patients were divided into 2 groups:group A: 40 patients were treated with smecta and general medicine.group B:38 patients were only routinely treated. The routine medicine included prednisone, vitamin B 2 and ciprofloxacin.Results The effective rate for acute gastroenteritis in A group was significant higher than in B group ( P

Objective To develop a control program running on the magnetic induction escape decompression control timer. Methods The software was developed by VHDL in a modular style under the environment of Quartus II. Results The control software stores decompression profile and accurately controls the commitment of the decompression process. Conclusion The program can work accurately according to the profile selected and meet our needs perfectly.

Objective To approach the toxicity of Danggui Sini plus Wuzhuyu Shengjiang Tang and Asarum heterotropoides Fr.var. mandshuricum Kitag. Method To observe the Ca2+, Na+-K+-ATPase from the mice renalis tissue in order to prove the medicine curative effect. Result The Danggui Sini plus Wuzhuyu Shengjiang Tang and Asarum heterotropoides Fr.var. mandshuricum Kitag. can obviously increase the Ca2+ and decrease the Na+-K+-ATPase of the mice. Conclusion The Danggui Sini plus Wuzhuyu Shengjiang Tang and Asarum heterotropoides Fr.var. mandshuricum Kitag. has very obviously toxicity to mice by influence the Ca2+ and Na+-K+-ATPase of the tissue homogenate.

OBJECTIVEThis study aims to construct a three-dimensional finite element model of a maxillary anterior teeth retraction force system in light wire technique and to investigate the difference of hydrostatic pressure and initial displacement of upper anterior teeth under different torque values of tip back bend.

METHODSA geometric three-dimensional model of the maxillary bone, including all the upper teeth, was achieved via CT scan. To construct the force model system, lingual brackets and wire were constructed by using the Solidworks. Brackets software, and wire were assembled to the teeth. ANASYS was used to calculate the hydrostatic pressure and the initial displacement of maxillary anterior teeth under different tip-back bend moments of 15, 30, 45, 60, and 75 Nmm when the class II elastic force was 0.556 N.

RESULTSHydrostatic pressure was concentrated in the root apices and cervical margin of upper anterior teeth. Distal tipping and relative intrusive displacement were observed. The hydrostatic pressure and initial displacement of upper canine were greater than in the central and lateral incisors. This hydrostatic pressure and initial intrusive displacement increased with an increase in tip-back bend moment.

CONCLUSIONLingual retraction force system of maxillary anterior teeth in light wire technique can be applied safely and controllably. The type and quantity of teeth movement can be controlled by the alteration of tip-back bend moment.

In order to understand the alcohol's toxicity to the quantitative alternations of synapses in mouse visual cortex, the expression of synaptophysin after prenatal alcohol exposure was investigated. In present study, the experimental mice at P0, P7, P14 and P30 were grouped, as control, 2 g x kg(-1) alcohol treatment and 4 g x kg(-1) alcohol treatment. The pre-synaptic elements which were used to represent synapses were marked with synaptophysin (a synaptic vesicle associated protein) by immunocytochemistry technique. The synaptophysin positive boutons in layer VI of visual cortex were imaged under laser confocal microscope. With stereological methods, the number cal density of synapse in visual cortex was calculated in different groups at various ages. Moreover, Western blotting was carried out to detect the expression of synaptophysin in visual cortex. The results showed that prenatal alcohol exposure could cause synaptic loss with long-term effect and in a dose dependent manner. For instance, there were significant difference among the different treatment groups of P0, P14 and P30 as well (P < 0.05). Western blotting supported the results of immunofluorescent labeling. In conclusion, prenatal alcohol exposure can induce the synaptic loss dose dependently and with long-term effect. Our findings implicate that the synaptic loss with long-term effect in CNS probably contributes to the lifelong mental retardation and memorial lowliness associated with childhood FAS.

150-day-old Tianfu ducklings were divided into three groups,and fed with diets as follows :Zn deficient (22. 9 mgZn per kg diet),controls(100 mg Zn per kg diet) and Zn toxic (1 300 mg Zn per kg diet) for seven weeks (Zn deficiency,ZD)or four weeks (Zn toxieity,ZT). The ANAE+ positive ratios of the peripheral blood T-lymphocytes were much lower (P＜0.01 ) in Zn deficient and toxic groups than in the control group. The results showed that Zn deficiency and toxicity would suppress the development of T-lymphocytes and reduce the peripheral blood T-lymphocyte populations. Potential mechanisms underlying these observations are also discussed.

Objective To study the effects of CBL teaching mode on treatment plan making process among orthodontic postgraduates. Methods Totally 42 junior and senior orthodontic post-graduates were randomly divided into 2 groups (21 per group)named as experimental group and test group. Each group was further divided in to 3 teams involved in CBL and traditional teaching. Six cases of the same type malocclusion were selected each time;after 4 teaching cycle,test scores of two groups were analyzed with SPSS 19.0. Results were shown as mean ± standard deviation and t test andχ2 test were applied to evaluate the rationality and accuracy of treatment plan made by students. Survey questionnaire were issued to teachers and students after class and the assessment results of CBL teaching mode were summed up. Results Test scores were (88.61±8.34)in experimental group and (76.13±8.59)in control group with significant differences (t=3.16,P=0.01). Pass rate of two groups were 96.12%and 87.51%with significant differences (χ2=4.76,P=0.02). During the first teaching program, accurate rates of experimental group and control group were respectively 31.00% and 36.70% and ra-tionality were 33.31%and 33.30%. During the second teaching program,accurate rates of experimen-tal group and control group were 68.80%and 45.70%and rationality were 62.72%and 43.37%. During the third teaching program,accurate rates of experimental group and control group were 89.70% and 51.20%,and rationality were 95.00% and 66.70%. During the fourth program,accurate rates of ex-perimental group and control group were respectively 97.80% and 55.30% and rationality were 98.30% and 75.60%. Conclusions CBL teaching mode is helpful to improve the students' ability of analyzing clinical cases and making more accurate and rational treatment plan,however the increasing teaching cost and the course load are also involved.

Objective To study the alteration of hepatocyte growth factor and c-met in the lungs of rats with pulmonary arterial hypertension and its possible underlying mechanisms.Methods Left pneumonectomy plus monocrotaline injection was used for rat PAH model.Rats were executed after measurement of their pulmonary arterial pressure at 1,2, 3 and 4 weeks after MCT injection.Then the right lung and heart were harvested for further analyses.Expression of HGF and c-met was determined by RT-PCR and Western blot.Expression of eNOS and caspase-3 was analyzed immunohistochemically and intrapulmonary TGF-β and ET-1 was analyzed with ELISA.Results Compared with the normal controls, manifestations of right heart hypertrophy and failure, well-elevated pulmonary arterial pressure were observed 28 days after left lung resection and MCT injection.Pulmonary vascular remodeling (i.e., pulmonary fibrosis, hyperplasia of pulmonary arterial endothelial cells and vascular smooth muscle cells in tunica media, as well as decease of vascular density) was observed.Intrapulmonary HGF expression decreased in a time-dependent manner at both mRNA and protein levels 4 weeks after MCT injection, while c-met stayed unchanged.Immunohistochemically, expression of eNOS was reduced and caspase-3 strengthened.On the contrary, ET-1 and TGF-β were obviously up-regulated(P ＜ 0.01).Conclusion Intrapulmonary HGF expression was obviously downregulated in PAH rats, accompanying with reduction of NO and increase of ET-1 and TGF-β expression, while c-met still unchanged.

As an active oxygen, ozone can induce oxidative stress, however, small doses of ozone pretreatment of the body may devel-op to oxidation toleration, even anti-oxidative damage, thereby protecting organ from ischemia-reperfusion injury. This paper reviewed the status of ozone pretreatment in organ ischemia-reperfusion, such as heart, kidney, liver, skeletal muscle, gonads and brain. Ozone therapy may have potential application values in organ transplants and cardiovascular diseases. Meanwhile, whether clinical application of ozone big autohemotherapy in ischemic cerebrovascular disease is reasonable or not in nearly 10 years was put forward.