Objective:To explore the effects ofbufalin (BUF) combined with doxorubicin (DOX) on the proliferation and apoptosis in human lung cancer cell line A549 in vitro.Methods:Methyl thiazolyl tetrazolium (MTT) assay was used to measure the inhibitory effects of BUF,DOX and their combination on the growth ofA549 cells.Hoechst 33342 staining was used to observe the changes of nucleus.Flow cytometry was used to investigate the apoptosis and cell cycle distribution of A549 cells.Western blot was used to examine the expression of apoptotic protein.Results:BUF and DOX showed inhibitory effect on the A549 cells in a dose and time-dependent manner.Compared with BUF or DOX alone,combination of BUF (1,20,100 nmol/L) with DOX (1.0 μg/mL) could significantly increase the growth inhibition rate ofA549 cells at 24,36,72 h,respectively (all P＜0.05).BUF and DOX alone could induce apoptosis,and their combination could significantly increase the apoptosis ratio.In addition,BUF combined with DOX could block the cell stage of A549 cells,keep the cell stage stay in S stage and up-regulate the expression of caspase-3.Conclusion:BUF combined with DOX can significantly inhibit the proliferation ofA549 cells,which might be related to the induction of apoptosis,cell cycle S phase arrest and caspase-3 up-regulation.

Objective To observe the improvement effects of astragaloside Ⅳ (AS-Ⅳ)on the myocardial focal ischemia-reperfusion (I/R)injury and its influence in PI3K/Akt/mTOR pathway,and to clarify the protective effect of AS-Ⅳ on myocardial I/R inj ury and the possible mechanisms.Methods The left main coronary arteries of 60 Sprague-Dawley rats were occluded for 30 min followed by a 120-min reperfusion to induce I/R model.The rats with I/R inj ury were randomly divided into model group (normal saline), AS-Ⅳ group (intravenous inj ection of 10 mg·kg-1 AS-Ⅳ 5 min before reperfusion),PI3K inhibitor Wortmannin (WOR)group (intravenous injection of 0.6 mg·kg-1 WOR 10 min before reperfusion)and AS-Ⅳ+WOR group (intravenous injection of 10 mg·kg-1 AS-Ⅳ and 0.6 mg·kg-1 WOR 5 and 10 min before reperfusion,respectively).15 age-matched SD rats were chosen as control group.The heart mass,degrees of infarction and ischemia and cardiac function ,including left ventricular systolic mean pressure (LVSP),end-diastolic pressure (LVEDP),fractional shortening (FS)and ej ection fraction (EF),of the rats in all groups were analyzed. Western blotting method was used to measure the phosphorylation levels of Akt and mTOR(p-Akt and p-mTOR).The specific fluorescent probe DHE staining was employed to detect the myocardial reactive oxygen species levels. Results Compared with control group, the degrees of infarction and ischemia, LVEDP, myocardial levels of p-Akt/Akt, p-mTOR/mTOR and reactive oxygen species levels of the rats were increased (P<0.05).and the levels of LVSP,FS and EF were decreased in model group (P<0.05). Compared with the model group,the degrees of infarction and ischemia,LVEDP and reactive oxygen species level were decreased (P<0.05),while the levels of p-Akt/Akt,p-mTOR/mTOR LVSP, FS and EF of all rats in AS-Ⅳ group were increased (P<0.05).Compared with AS-Ⅳ group,the degrees of infarction and ischemia,LVEDP and reactive oxygen species levels of the rats in WOR group and AS-Ⅳ+WOR group were increased (P<0.05 ), and the myocardial p-Akt/Akt, p-mTOR/mTOR and LVSP, FS, EF were decreased (P<0.05).Conclusion AS-Ⅳ has improvement effect on myocardial I/R injury.AS-Ⅳ can reduce the extent of myocardial infarction and oxidative stress and improve the heart function,and its possible mechanism may be related to activating PI3K/Akt/mTOR signaling pathway.

Objective To clarify the role of protein kinase A (PKA),protein kinase C (PKC) and cyclin dependent kinase5 (CDK5) in the alterations of neurofialments (NFs) in 2,5-hexanedione (HD) induced toxic peripheral neuropathies. Methods HD was administrated to male Wistar rats by intraperitoneal injection at doses of 200 or 400 mg/kg,once a day,for 8 consecutive weeks. The relative contents of PKA,PKC,p35 precursor and CDK5 in spinal cord were determined by using SDS-PAGE and Western Blotting. Results In the cytosolic fraction of spinal cord,the levels of PKA and PKC in 400 mg/kg group significantly increased (P

Objective To investigate the liver damage caused by single high-dose intake of ethanol in mice. Methods Twenty-four male Kunming mice were randomized into 2 groups. The mice in ethanol group were treated with single dose of ethanol (50%,V/V,12 ml/kg),while the control mice received distilled water. The serum biochemical indices were determined 16 h after ethanol exposure. The hepatic triglyceride (TG) and free fatty acid (FFA) levels and the histological changes were examined to evaluate the fat accumulation,while the Ca2+-induced mitochondrial permeability transition (MPT) was detected for the mitochondrial function assay. The liver and mitochondrial malondialdehyde (MDA) and glutathione (GSH) levels were determined to assess the lipid peroxidation level. The activities and the protein expression of the CYP2E1,1A2,3A were determined. Results Slow response,ataxia and righting reflex disappearance were gradually emerged,which disappeared at about 3 h later. Compared with the control group,the liver index,the serum ALT and AST activities,the hepatic TG,FFA,and MDA levels,and the activity and protein level of the CYP2E1 significantly increased,while the liver GSH level significantly decreased (P0.05). In addition,A540 of ethanol group was higher than that of control group (P

Objective To assess the feasibility of laryngeal mask anesthesia under spontaneous ventilation in pulmonary resection with uniportal video-assisted thoracoseopic.Methods Forty patients with pulmonary masses were randomized into two groups(n =20 in each group) to undergo pulmonary resection with uniportal videoassisted thoracoscopic,full implementation of thoracoscopic lobectomy and mediastinal lymph node dissection.Patients in two groups were induced by intravenous anesthesia,and the skin of the fifth intercostal space were infiltrated with ropivacaine.Patients in two both groups were maintained by intravenous ancsthesia and sevoflurane anesthesia.Muscle relaxants were administered in endotracheal inmbation group but not in the LMA group.Patients in the LMA group and tracheal intubation group underwent with spontaneous breathing and one-lung ventilation respectively.Results No significant differences were found in surgery time,intraoperative lowest SpO2,preoperative PaCO2,1-h postoperative blood gas analysis between the two groups.The anesthesia induction time,extubation time,and the stay time for the recovery of anesthesia and postoperative hospital stay were significantly shorter than those in the tracheal intubation group.The increments in MAP and HR after intubation operation were smaller than those in the LMA group.The total dosage of sulfentanyl and propofol per kg in the LMA group were significantly less than those in the control group.The PaCO2 after pulmonary resection and the intraoperative maximum level of PETCO2 in the former group were significantly higher than those in the tracheal intubation group,however the incidence of throat discomfort and the hospitalization cast were significantly decreased.Conclusion In view of patient rehabilitation and in hospitalization cast,laryngeal mask anesthesia under spontaneous ventilation in uniportal video-assisted thoracoscopic surgery was better than the procedure performed under intubation anesthesia.

Objective To investigate the value of electronic rectosigmoidoscopy in health examinations.Methods Based on retrospective analysis of 30 250 patients who received electronic rectosigmoidoscopy in the Physical Examination Center of our hospital from May 2010 to Dec.2013,the incidence of anal disease and sigmoid colon disease were analyzed.Results The highest detection rate of common diseases was hemorrhoids,followed by proctopolyps,hypertrophy of anal papilla,proctitis,anal fissure,melanosis coli and colonic tumor.The detectable rate of them were 55.57％ (16 810/30 250),10.57％ (3 196/30 250),5.03％ (1 523/30 250),0.69％ (210/30 250),0.54％ (162/30 250),0.29％ (87/30 250),0.09％ (28/30 250),0.04％ (13/30 250),0.02％ (6/30 250).Conclusion Electronic colonoscopy for colorectal polyps,rectal cancer,colon melanosis and proctitis detection rate was significantly higher than the anus digital rectal examination,the difference is statistically significant,and it also has merits of simplicity,noninvasiveness and rapidity.

Objective To learn the effect on carcinoma xenograft in nude mice by inhibiting human papillomavirus 16(HPV16) E6 gene expression in CaSki cell. Methods The recombinant plasmids expressing HPV16 E6 small interference RNA (siRNA) were transfected into CaSki cell. The cells expressing recombinant plasmid was screened out with G418. The expression of E6 mRNA was determined by RT-PCR. The cells were inoculated into BALB/c nude mice subcutaneouly and the growth of the xenograft carcinoma was observed. After the pGensil-CH2 recombinant was injected into the carcinoma, the growth of carcinoma and pathological changes of carcinoma were observed. Results The CaSki cell expressing E6 siRNA was obtained, and HPV16 E6 mRNA expression in CaSki cell was down-regulated. The oncogenicity of the CaSki cell expressing E6 siRNA was degraded, the inhibition rate was up to 71.4% as compared with that of control group. The growth of tumor in nude mice was inhibited after the E6 siRNA plasmids were injected into the nude mice. The volume and weight of the tumor treated by siRNA were smaller than that of control group significantly. More necrotic area and less cell division phase were observed under light microscope in the E6 siRNA treated tumor. Conclusion The oncogenicity of the CaSki cell was degraded after silencing HPV16 E6 gene in CaSki cell by E6 siRNA.

Objective:To explore the effects of caffeine on the prevention of Alzheimer's disease (AD).Methods:Use Ethanol as a solvent to extract the caffeine in tea and then injecting 5％ D-galactose saline solution 1ml/d/kg to establish aging model mice.Divide mice randomly into experimental group (high-dose/low-dosecaffeine),positive control group,negative control group,and normal con-trol group (NS) and injecting appropriate drugs for consecutive four weeks.Test superoxyde dismutase (SOD) and malondialdehvde (MDA) periodically.Take mice's hippocampus and use Western blotting to detect the expression of brain derived neurotrophic factor (BDNF) and extracellular signal-regulated kinasesl/2 (p-ERK1/2).Results:The expression of BDNF and p-ERK1/2,negative control group is less than low-dose experimental group and positive control group (P＜0.01);The p-ERK1/2 expression of injecting D-galactose mice was significantly lower than normal group,negative control group compared weth the normal group,the differencd was significant (P＜0.05).The level of SOD in model group was significantly lower than that in normal control group,high,low dose caffeine group and positive control group (P＜0.01),but the level of MDA is opposite.Conclusions:Caffeine can delay aging process by increasing the level of SOD in aging mice,and enhancing the expression of BDNF and P-ERK1/2.Caffeine does a lot to prevent AD.

OBJECTIVE: To investigate the clinical relationship between allergic rhinitis and allergic factors with chronic rhinosinusitis with or without nasal polyps. METHOD: Two hundred patients were divided into A and B two groups. Group A of 110 patients was diagnosed allergic rhinitis. Group B of 90 patients was diagnosed chronic sinusitis with or without nasal polyps. Serums sIgE was detected with EUROIMMUN, and observe the recurrence rate of chronic sinusitis with or without nasal polyps patients who accept operation treatment and observe the incidence of allergic rhinitis superinduced chronic sinusitis with or without nasal polyps. RESULT: The total positive rate of group A sIgE was 89.09%. The total positive rate of group B sIgE was 74.44%. The postoperative recurrence rate of sIgE positive group was 58.21% and the postoperative recurrence rate of sIgE negative group was 8.70% in the group B. In the group A, the positive rate of serums sIgE in allergic rhinitis with chronic sinusitis with or without nasal polyps (37.27%) was 97.56%, while the positive rate of serums sIgE in allergic rhinitis without chronic sinusitis (62.73%) was 79.71%, there is a significant difference in allergic rhinitis with or without chronic sinusitis (χ2 = 6.96, P < 0.01). CONCLUSION There is a certain correlation between allergic rhinitis and allergic factors with chronic sinusitis with or without nasal polyps. Therefore, through avoiding allergen exposure, the treatment of allergic rhinitis can effectively control recurrence rate of chronic sinusitis and nasal polyp.
Adult ; Chronic Disease ; Humans ; Immunoglobulin E ; blood ; Nasal Polyps ; complications ; immunology ; Recurrence ; Rhinitis, Allergic ; complications ; immunology ; Sinusitis ; complications ; immunology

The new media communication mode is characterized by personalization, instantization, liberalization, virus transmission and interactiveness. Changes in the way of new media communication have led to changes in hospital reputation in terms of improving effect, formation mode, maintenance approach, and hospital-public relations. At the same time, there are also serious crisis of trust, weak management, crisis at any time and severe lemon effect. Give full play to the advantages of new media and improve the comprehensive strength of hospital reputation;In the new media as the carrier, building reputation management chain, strengthening the relationship between stakeholder management, strengthening the management of hospital reputation promotion, new media public opinion monitoring and establishing dynamic hospital reputation crisis management mechanism will likely become the optimizing strategy to make up the above deficiencies and the chief way for the hospital culture construction and promotion in the future.