Objective To investigate the effects of siRNA silencing of inhibitor of apoptosis protein gene on the proliferation of airway smooth muscle in bronchial asthma mice .Methods Tweenty female BALB/c mice were randomly divided into experimen‐tal group and control group .Mice in the experimental group were constructed asthma models .The trachea and bronchi were collect‐ed for cell culture .Respectively ,the cultured airway smooth muscle cells in the experimental group and the control group were grouped:PBS control group (added to PBS solution) ,missense chain control group (transfected with missense chain) and siRNA transfection group (transfected with siRNA Survivin) .The expressions of Survivin mRNA ,Survivin protein and caspase‐9 protein in airway smooth muscle cells were detected .The levels of IL‐6 and CCL5 in cell supernatant were detected .Results RT‐PCR re‐sults showed that ,the relative expression levels of Survivin RNA of airway smooth muscle cells in the siRNA transfection group of the experimental group were lower than the PBS control group and missense chain group ,the differences were statistically signifi‐cant (P<0 .05) .Western blot results showed that ,the expressions of Survivin proteins in the siRNA transfection group of the ex‐perimental group were lower than the PBS control group and missense chain control group ,while the caspase‐9 protein were higher , In the experimental group ,the synthesis and secretion levels of IL‐6 and CCL5 of airway smooth muscle cells in the siRNA transfec‐tion group were lower than the PBS control group and missense chain control group ,the cell proliferations at 2-4 d in the siRNA transfection group were lower than the PBS control group and missense chain control group ,the proportion of G0/G1 phase in the siRNA transfection group were higher than the PBS control group and missense chain control group ,but the proportion of S/G2 phase were lower than the PBS control group and missense chain control group ,cells apoptosis rates of the siRNA transfection group were lower than the PBS control group and missense chain control group ,the differences were statistically significant (P<0 .05) .Conclusion siRNA specific silencing Survivin gene could accelerate the airway smooth muscle cell apoptosis ,and inhibit cell abnormal proliferation and secretion .

Objective To explore the clinical efficacy of entecavir combined with Vitamin E in treating patients with Chronic hepatitis B complicated with non-alcoholic fatty liver.Methods Retrospective analysis was done by reviewing the clinical data of 103 patients, who suffered with chronic hepatitis B complicated with non-alcoholic fatty liver and treated in our hospital from 2015 to 2016.The patients were divided into the control group with 61 cases and the observation group with 42 cases based on different therapies.The control group was treated with only entecavir while the observation group was treated with entecavir and Vitamin E, and both the courses of treatment lasted for 6 months.The negative conversion ratio of HBV-DNA, levels of ALT, TBIL, ALP, the disease state and the adverse reactions of the two groups were compared before and after treatment.Results The negative conversion ratio of HBV-DNA of the observation group was obviously higher than that of the control group, and the patients of the observation group showed significant improvement.Meanwhile, the levels of ALT, TBIL and ALP in the two groups were both lower than before treatment.Compared with the control group, those indexes in the observation group were significantly lower (P<0.05).Conclusion Entecavir combined with Vitamin E for the treatment of chronic hepatitis B complicated with non-alcoholic fatty liver could significantly decrease the viral infections so that the state of patients can be improved.

Objective To observe the intervention effect of acupuncture on mammalian target of rapamycin(mTOR)of hypoxic-ischemic encephalopathy(HIE)model in newborn rats.Methods Seven-day-old SD rats were randomly devided into six groups.Sham-surgery group:the bilateral common carotid arteries were separated,without ligation,and the rats were without hypoxia.HIE model group:the bilateral common carotid arteries were separated and ligated,and the rats were in low oxygen.In the sham-acpuncture group,four positions were acupunctured:from Baihui,Dazhui,Quchi and Yongquan by 1 cm after hypoxia ischemia.In acpuncture group,four positions were acupunctured:Baihui,Dazhui,Quchi and Yongquan after hypoxia ischemia,positioned according to the ordinary acupoints for acupuncture in rats.In the antagonists group,the HIE model rats were injected wortmannin 5 μl to the left ventricle.The acupuncture and antagonists group had the same operations of antagonists group and acupuncture group at the same time.All the groups were subdivided into four subgroups in terms of four time periods of 1 d,3 d,7 d and 21 d.The morphological changes of organizational structures of hypoxic ischemia side in brain tissue were observed by pathological methods.The levels of mTOR mRNA expression were detected by RT-PCR.Results In acupuncture group, acupuncture treatment for 21 d showed that acupuncture group had clearly organizational structure,regular arrangements of neurons,normal cell outline,relatively clear nucleolus,mitigated swell neuron and hyperplas-tic glial cells.Compared with that of the HIE model group,acupuncture treatment increased mTOR mRNA dramatically on day 1 ,day 3,day 7 and day 21 (Q =7.099 1 ,9.009 9,7.894 0,9.914 7,P ﹤0.05 respective-ly).The expression of mTOR mRNA in acupuncture and antagonists group was significantly higher than that in sham-surgery group on day 1 ,day 3 day 7 and day 21 (Q =9.868 9,15.843 4,21.007 2,P ﹤0.05 respec-tively).In day 21 ,compared with the sham operation group and the HIE model group,the expression of mTOR mRNA in acupuncture and antagonists group were significantly higher (Q =18.236 0,4.729 7, P ﹤0.05 respectively).Conclusion Electroacupuncture treatment can promote the expression of mTOR at the mRNA level and protect brain of newborn rats with HIE.

Animals ; Hippocampus ; metabolism ; Long-Term Potentiation ; Male ; Neurogranin ; biosynthesis ; Rats ; Rats, Wistar ; Sleep Deprivation ; metabolism

Objective To study the changes and significance of the hyaluronic acid (HA) and collagen in the larynx of old guinea pig.Methods Six young guinea pigs (4 months old) and 6 old guinea pigs (2 years old) were selected as control group and aged group for this study (n=6 for each)The expressions of HA and collagen in the larynx of guinea pigs were detected using Alcian blue and Masson trichrome methods,respectively.The images were managed using Image-Pro Plus 6.0 For Window.Results The optical density (expression level) of HA in the larynx was lower in aged group than in control group (0.69 vs.0.80,F=13.45,P＜0.05).The optical density(expression level) of collagen in the larynx was higher in aged group than in control group (0.71 vs.0.63,F=9.56,P＜0.05).Conclusions The content of HA in larynx is decreased and collagen in larynx is increased in old guinea pig which may result in presbyphonia change through higher viscoelastic properties of vocal cords.

[Objective]To investigate the significance of the high-risk human papilloma virus (HPV)detection in the screening and diagnosis of cervical lesions.[Methods] The high-risk HPV DNA test results of 797 patients with cervical lesions who all accepted cytology and histopathology test were collected and analyzed retrospectively.[Results]The high-risk HPV DNA positive rates in cervicitis,cervical intraepithelial neoplasia(CIN)Ⅰ,CIN Ⅱ,CIN Ⅲ and cervical cancer were 53.41％(188/352),70.91％(117/165),87.63％(85/97),97.90％(140/143),97.50％(39/40),respectively.The sensitivity and negative predictive value of the high-risk HPV DNA detection for CIN Ⅱ and more serious lesions were 96.66％(318/329),93.29％(153/164),respectively.The detection rate of CIN Ⅱ and more serious lesions in patients with atypical squamous cells of undetermined significance(ASCUS)and positive high-risk HPV DNA was 30.03％(94/313),while the rate in patients with negative high-risk HPV DNA was 1.55％(2/129).[Conclusions] The more serious the cervical lesion is,the higher high-risk HPV DNA positive rate is.It is most closely related with CIN 11 and cervical cancer.The high-risk HPV DNA detection has high sensitivity and negative predictive value for CIN Ⅱ and more serious lesions.The high-risk HPV DNA detection has high negative predictive value in CIN Ⅱ and more serious lesions in ASCUS.

Background Dacryocystitis is one of the most common infectious eye diseases.The gold standard for the identification of bacteria causing dacryocystitis is bacterial culture.The combination of regular culture method with molecular biology techeniques will generate more reliable results.However,very few research data are available in ophthalmological studies in this area.Objective This study was to identify the genera and species of the dacryocystitis-causing bacteria by PCR amplification of the 16S rRNA sequences.Methods Ten cases of qualified standardized bacteria samples were taken,and the nucleic acids were released in the heating process of the PCR procedure.The 16S rRNA genes were amplified and sequenced,and the genera and species were identified using BLAST from GenBank,and the results were used to compare with the results from biochemical identification to test the reliability of this method.The cultured bacterial species from the lacrimal sac secretions from 30 cases of dacryocystitis patients were identified with the above method.Results The outcome of the PCR identification for the 10 cases of quality control standard bacterial specimens was consistent with the results from the biochemical identification.The identification of the 30 cases of dacryocystitis through sequencing the 16S rRNA revealed there were 13 cases of Staphylococcus epidermidis infection,2 cases of Staphylococcus warneri infection,1 case of Staphylococcus hominis infection,5 cases of Corynebacterium macginleyi infection,3 cases of Streptococcus pneumonia infection,2 cases of Bacillus cereus infection,1 case of Micrococcus luteus infection,1 case of Moraxella catarrhalis infection,1 case of Moraxella osloensis infection and 1 case of Pseudomonas aeruginosa infection.Conclusions Sequencing the 16S rRNA is an accurate and specific way for the identification of the genera and species of bacteria that cause dacryocystitis in patients.This sequencing method is feasible in monitoring a variety of dacryocystitis-causing pathogens.More information and epidemiological statistics about dacryocystitis can be obtained from 16S rRNA sequencing.

There were some shortcomings for traditional teaching mode of nutrition and food hygiene course, such as many teaching contents and little teaching time, students much passively learning and little active learning. We explored the combination of the WeChat and the TBL teaching to conduct the flipped classroom to solve the deficiency. The teaching pattern was conducted in 60 students majoring in preventive medicine from Grade 2012. The learning task of nutrition and food hygiene was released on the WeChat before the class. Students learned knowledge in the form of discussion based on case in the class. After the class, the discussion, answer the question and test were conducted on the WeChat. The survey showed that 85% of the students were satisfied with teaching pattern,especially satisfied with its role of broadening students' knowledge and vision, improving their autonomous learning ability, teamwork ability, and their ability to analyze and solve problems.

A highly sensitive electrochemical deoxyribonucleic acid(DNA) biosensor based on multi-walled carbon nanotubes(MWNT)/Ag-TiO_2 composite film was developed. The solution containing Ag-TiO_2-MWNT composite was casted on the carbon paste electrode surface to form a robust film, which combine the advantages of the good biocompatibility of Ag-TiO_2 naocomposite and the fine conductivity, as well as the large active surface area of carbon nanotubes. The composite could greatly improve the immobilization capacity of the probe DNA. The morphologies and electrochemistry of the nanocomposite film were investigated by scanning electron microscopy and electrochemical techniques including electrochemical impedance spectroscopy and cyclic voltammetry, respectively. DNA hybridization events were monitored by a label-free method of electrochemical impedance spectroscopy. This label-free electrochemical impedance DNA biosensor showed high sensitivity and selectivity for phosphinothricin acetyltransferase gene sequence assay. The multicomponents films also displayed a high stability during repeated regeneration and hybridization process.

Objective To investigate the prognosis correlation factors of sudden hearing loss.Methods A retrospective analysis was performed in 137 cases (149 ears) of sudden hearing loss.The relationships between the age,prehospital delay time,type of hearing loss,degree of hearing loss,and whether with dizziness,tinnitus,diabetes mellitus,high blood pressure and therapeutic effect were observed.Results The total effective rates in ＜ 45 years,45-59 years and ＞ 59 years patients were 86.36％(38/44),77.78％ (56/72) and 57.58％ (19/33) respectively.There were statistical differences in the total effective rate between ＜ 45 years,45-59 years patients and ＞ 59 years patients (x2 =8.128,P =0.004; x2 =4.525,P =0.033).The total effective rates in patients who were treated ≤7 d,8-14 d and ≥ 15 d were 83.52％ (76/91),76.67％(23/30) and 50.00％(14/28) respectively.There were statistical differences in the total effective rate between patients who treated ≤7 d,8-14 d and patients who were treated ≥ 15 d (x2 =13.050,P =0.000; x2 =4.459,P =0.035).The total effective rates in low-mid frequency type,all frequency type,total deafness type and mid-high frequency type were 89.66％ (52/58),84.44％ (38/45),7/12,47.06％ (16/34) respectively.There were statistical differences in the total effective rate between low-mid frequency,all frequency type and total deafness type,mid-high frequency type (P ＜ 0.05).The total effective rates in hearing loss mild degree,middle degree,severe degree,extremely severe degree and total deafness were 87.23％ (41/47),86.11％ (31/36),61.90％ (13/21),7/15 respectively.There were statistical differences in the total effective rate between mild degree,middle degree and severe degree,extremely severe degree and total deafness (P ＜ 0.05).The hearing loss prognosis with the dizziness,diabetes mellitus,high blood pressure was worse.Conclusions It is considered that the age,prehospital delay time,type of hearing loss,degree of hearing loss,and whether with dizziness,high blood pressure,diabetes mellitus are related to the total effective rate.The prognosis of hearing loss can be estimated according to these correlation factors.