Objective To explore the molecular mechanism of osteoblast apoptosis mediated by glucocorticoid, provide experimental basis for clinical prevention and treatment of hormonal necrosis of femoral-head.Methods The MC3T3-E1 cells were divided into control group and three treatment group treated with different concentrations of dexamethasone (1, 10, 100μmol/L) for 24 hours.The apoptosis rate detected by TUNEL, the mitochondrial transmembrane electric potential after JC-1 staining by flow cytometry, the expression of Bax, Bcl-2 in mitochondrion and Cyt-C, apoptosis inducing factor ( AIF) in cytoplasm by Western blot.ResuIts With the increasing of Dex concentration, the rate of osteoblast apoptosis was significantly increased(F(3,28) =159.0,P=0.000), the positive cell rate of JC-1 stainning was significantly increased(F(3,28) =499.5,P=0.000), the expression of Bax(F(3,28) =17.4,P=0.000)in mitochondrion and Cyt-C(F(3,28) =22.4,P=0.000), AIF(F(3,28) =42.61,P=0.000)in cytoplasm were significantly increased.There were statistically significant difference of above indexes between control group and each experimental group(P<0.05).But there were no significant differences of Bcl-2 in mitochondrion among five groups(F(3,28) =0.62,P=0.607).ConcIusion Dexamethasone increases expression of Bax in mitochondrion, prompts mitochondrial permeability transition pore ( MPTP ) to be over-openning, induces apoptosis in osteoblast via a mitochondria-mediated pathway.

Schwann cells are the seed cells of tissue engineedng in the regeneration of peripheral nerve.so whether we can harvest enough Schwann cells of high purity is very important in the tissue engineering.Culture and purification technology of Schwann cells has been improved day by day.The classical cultural methods include tissue-clump cultural method and enzyme digestion cultural method.On the basis of the classical cultural methods,someone uses new technologies to delete fibroblasts,such as addition of cytosine arabinoside,addition of antimitogenic agents.The latest purified methods include magnetic activated-cells separation,co-culture with three-dimensional scaffolds and laminin-coated wells purified method.The aim of the skills above is to provide enough Schwann cells for the tissue engineering repeir of degenerated peripheral nerves.There are many ways of Schwann cells culture and purification.and we have made a primary progress,but it still needs further studies before the entire achievemenL such as long cycle,low activity in cultured calls,and the instable biological characteristics during passage culture,etc.

Since Zika virus (ZIKV) has firstly been isolated in 1947, Uganda, outbreaks of Zika fever have been reported in many areas such as in Africa, Southeast Asia and America. Imported cases in China also have been reported. Zika virus belongs to the family Flaviviridae, genus Flavivirus, and include Africa subtype and Asia subtype. It is a mosquito-borne virus primarily transmitted by Aedes aegypti mosquitoes. Sexual transmission, Blood transmission and mother-to-fetus transmission were also reported. Zika virus can go though blood-brain barrier and infect central nervous system. Symptoms are generally mild and self-limited, but recent evidence suggests a possible association between maternal Zika virus infection and adverse fetal outcomes, such as congenital microcephaly, as well as a possible association with Guillain-Barré syndrome. Laboratorial Diagnosis includes nucleic acid detection, Serological test, and isolation of virus. Currently, no vaccine or medication exists to prevent or treat Zika virus infection. Preventive measures against Zika virus infection should be taken through prevention of mosquito bites and surveillance in epidemic area.
Aedes ; physiology ; virology ; Animals ; Humans ; Insect Vectors ; physiology ; virology ; Zika Virus ; genetics ; physiology ; Zika Virus Infection ; transmission ; virology

Attention deficit hyperactivity disorder( ADHD) and Tourette syndrome( TS) are common psychoneurological disorders both in childhood and puberty pubertas which have an effect on the development of psychological and behavior,result in study and adaptive capacity decline,cognize damage. In recent years,many researches shows event-related potential P300 has significance for evaluating of cognize in children. This paper summarizes the research of event-related potential P300 in the children with ADHD and TS to compare the differences and discuss the possible mechanism.

Objective To evaluate the accuracy of magnifying endoscopy with narrow-band imaging (ME-NBI) for detecting early esophageal cancer invasion depth. Methods We searched Embase, Pubmed, Web of Science, Cochrane Library, CBM, CNKI, Wanfang and VIP databases from inception to Feb.2016. Domestic articles related to the accuracy of ME-NBI detecting the early esophageal cancer invasion depth were collected comprehensively. The quality of the papers was evaluated by quality assessment of diagnostic accuracy studies (QUADAS). Data analysis was conducted by Stata 12.0 software. Results Seven group data from six studies including 319 patients with 366 lesions met the inclusion criteria. The pooled sensitivity, specificity, positive likelihood ratio, negative likelihood ratio, SROC area under the curve and DOR were 93.8 % (95 % CI: 0.886~0.967), 75.2 % (95 % CI: 0.658~0.827), 3.779 (95 % CI: 2.685 ~ 5.318), 0.083 (95 % CI: 0.044~0.155), 0.80 (95 % CI: 0.770~0.840) and 45.658 (95 % CI:21.006~99.240). Conclusions The results suggest that ME-NBI may be an effective tool for detecting invasion depth of early esophageal cancer, which plays an important role in clinical selection of surgical approach and treatment.

Objective To investigate the correlation between serum procalcitonin (PCT) and acute physiology and chronic health evaluation Ⅱ (APACHE Ⅱ) score and prognosis in acute exacerbation of chronic obstructive pulmonary disease (AECOPD).Methods A total of 88 patients with AECOPD admitted to emergency department of Peking university third hospital were prospectively studied,and were divided into three groups,namely high score group,median score group and low score group according to APACHE Ⅱ score.Serum PCT,hypersensitive C-reactive protein (hs-CRP),WBC and lactate were assayed within the first 24 hours after admission,the differences in those indicators between three groups were analyzed; and the correlation between PCT and APACHE Ⅱscore,hs-CRP,WBC,lactate were investigated.The patients were divided into survival group and death group according to prognosis,and the differences in those indicators between the two groups were analyzed.Results The serum levels of PCT was higher in high score group (0.60±0.32) ng/ml than that in median score group (0.36 ±0.23) ng/ml and that in low score group (0.24 ±0.19) ng/ml,differences between groups were statistically significant (P ＜0.01).The hs-CRP was higher in high score group M (P25,P75) 36.88 (10.14,47.16) mg/L than that in median score group 15.00 (3.64,30.33) mg/L and that in low score group 14.77 (4.35,15.80) mg/L (P =0.046).The PCT significantly correlated with APACHE Ⅱ and hs-CRP (P ＜0.01).The serum levels of PCT,APACHE Ⅱ score,hs-CRP and lactate were significantly higher in death group than those in survival group (P ＜ 0.05).Conclusions There is a good correlation between PCT and APACHE Ⅱ score in patients of AECOPD,suggesting PCT to be a sensitive predictor of prognosis.

Objective To investigate the effect of solifenacin and epalrestat combination therapy on type 2 diabetes complicated with overactive bladder (OAB).Methods A total of 80 patients with T2DM and OAB were randomly divided into three groups:control group (Con group,n=24),epalrestat group (n=29),and solifenacin combines epalrestat group (n=27).Con group was treated with conventional therapy such as routine bladder training,anti-hyperglycemic,anti-hypertensive,lipid lowering treatment,and nerve nutrition.Epalrestat group was treated with epalrestat 50 mg,3/d orally on the basis of conventional treatment.Solifenacin group was treated with solifenacin 5 mg,1/d,and epalrestat 50 mg,3/d orally.All the subjects were followed up for 12 weeks.Voiding diary,OAB self rating scale (OABSS) score,maximum urinary flow rate (Qmax),average urinary flow rate (Qave),and urine volume(VV) were recorded.Results The daily micturition frequency in 24h,times of nocturia,urgency,frequency,and urinary incontinence,and OABSS scores were lower,while Qmax,Qave,and VV were higher in solifenacin group than in Con group and epalrestat group (P<0.05).The OABSS scores were lower while VV was higher in epalrestat group than in Con group (P<0.05).The total effective rate was higher in solifenacin group than in Con group and epalrestat group (92.6% vs 69% vs 41.7%,P<0.05).Conclusion Solifenacin and epalrestat combination therapy was effective in treating patients with T2DM and OAB.

Huangdi Neijing (Yellow Emperor's Internal Classic) is the earliest medical classic work existing at present in Chinese medical treasures and is the foundation of TCM. It not only contains rich medical words, but also supplements the new meanings of seven words, i. e. Wang, Xiu, Yuan, Fang, Xu, Jiu and Bian for removing needle, retaining needling, reinforcing technique, reducing technique, slow needling, moxibustion and stone-needle puncturing, respectively.
Acupuncture Therapy ; history ; Books ; history ; China ; History, Ancient ; Humans ; Medicine in Literature ; Medicine, Chinese Traditional ; history

Objective To investigate the efficiency and safety of the automated external defibrillator (AED); and to compare the defibrillating efficacy between the domestic AED and the imported AED. Method Fourteen Peking white swine weighed (30 ± 1 ) kg, were anaesthetized and arterial cannula was inserted into the left femoral artery for collecting blood samples and measuring artery blood pressure, cardiac output (CO) and external vascular lung water index (EVWI) by using PiCCO monitor, and another cannula was inserted into the left femoral vein to place an electrode as a temporary pace maker, and then ventricular fibrillation (VF) was induced by using a programmed electrical stimulation instrument. The swine were divided into two groups randomly ( random number) after VF was confirmed by electrocardio-monitor,and the domestic made AED (M group, n = 7) or imported AED (Z group, n = 7) were used respectively in 7 swine of each group. The electrodes of defibrillator were stuck to the precordium and sternum separately, and defibrillation was delivered by the AED signal. The entire procedure of defibrillation was repeated four times. The number of defibrillation delivery required to get normal cardiac rhythm was recorded. Twenty minutes after restoration of spontaneous circulation (ROSC), blood sample was taken to measure myocardial enzyme. The CO and EVWI were measured too. Measurement data was analyzed by repeated ANOVA and enumeration data was analyzed by Chi-square test. A value of P ＜0.05 was regarded as being significant statistical difference. Results There were 54 episodes of VF induced in 14 swine and only one swine in Z group was dead after 2nd episode of VF, resulting in 98.1% success rate of resuscitation. There were 37 defibrillation deliveries given to swine of M group, and 75.0% produced normal cardiac rhythm after the first delivery of defibrillation,whereas 80.0% in Z group after 32 defibrillation deliveries. The length of time from AED turned on to the recognition of ECG signal of VF was (29 ± 1 ) s. There were 2 occasions in both groups that the AEDs failed to recognize the VF signal emerged on ECG after the first induction of VF by electrical shock. Similarly, there were 2 occasions in Z group that the AED incorrectly recognized the signal of ventricular tachycardia as that of VF, but no harm was done after defibrillation delivery given following the signal of AED. During the entire course of experiment, heart rate,blood pressure and CO of all survived swine were stable,but the EVWI and myoglobin (MYO) gradually increased as time elapsed until the 3rd or 4th episode of VF leading to significant differences from the original ones. There were no significant differences in all biomarkers between two groups. Conclusions The VF can be ceased by AED safely and efficiently. There are no significant differences in signal recognition, efficacy of defibrillation and myocardial injury found between the domestic made AED and imported AED; but AED may not be good to be recommended to the professional staff of resuscitation because of its incorrect reorganization of ECG owing to over-automation.

Adenoviridae ; genetics ; Animals ; Dengue Vaccines ; immunology ; Humans ; Plasmids ; Recombinant Fusion Proteins ; immunology ; Vaccines, Attenuated ; immunology ; Vaccines, DNA ; immunology ; Vaccines, Synthetic ; immunology