0.05).The sera from animals immunized with parental strains had significant higher titer of IgG antibodies against GM1,GD1a and GT1b,at 14 and 28 day than before immunization(P

Objective To explore the causes and adverse effects of hypocarbia in newborns during mechanical ventilation. Methods Two hundred and forty-six newborns received assisted ventilation from Jan. 1994 to Dec. 2003 were retrospectively reviewed. Results The morbidity of hypocarbia was 14. 2%. It is common in preterm infants and the onset time of which were (31. 6?26. 9) hours after mechanical ventilation. The common primary disease was respiratory distress syndrome (RDS) (22. 6%). The mortality (32. 9%) and incidence of intracranial hemorrhage (20%) in hypocarbia cases were higher than those of the control group (7. 1 % and 5. 7%) (P

[ ABSTRACT] AIM: To investigate the regulatory mechanism of histone acetylation on cardiac hypertrophy in -duced by phenylephrine , and to provide a new idea for preventing and curing hypertrophic cardiomyopathy .METHODS:Phenylephrine was given by continuous subcutaneous injection for modeling cardiac hypertrophy in C 57BL/6 mice.The le-vel of histone H3 lysine 27 acetylation (H3K27ac) in the promoter of cardiac nuclear transcription factor GATA4 and the mRNA expression of GATA4 were identified by chromatin immunoprecipitation (ChIP) and real-time PCR, respectively. Meanwhile, the protein expression of histone H3K27ac, atrial natriuretic peptide (ANP) and α-myosin heavy chain (α-MHC) was determined by Western blot .Cardiac hypertrophy in the mice was observed by HE staining and echocardio-graphy.RESULTS:The results of Western blot showed that the level of histone H 3K27ac in phenylephrine group was sig-nificantly increased compared with normal saline group (P<0.05), and ChIP-qPCR data showed that the level of histone H3K27ac in the promoter of GATA4 was increased significantly in the same samples (P<0.05).The expression levels of GATA4 mRNA and ANP protein in phenylephrine group were apparently increased compared with normal saline group ( P<0.05).However, histone acetylase inhibitor anacardic acid attenuated histone H 3K27 hyperacetylation induced by pheny-lephrine, and downregulated the over-expression of GATA4 and ANP in the heart of the mice (P<0.05).HE staining and echocardiography data showed that phenylephrine apparently increased left ventricular posterior wall thickness and de -creased left ventricular end-systolic diameter and left ventricular end-diastolic diameter , while anacardic acid also reversed these indexes that mentioned above and attenuated cardiac hypertrophy induced by phenylephrine in the mice .CONCLU-SION:Histone acetylation modification imbalance is involved in cardiac hypertrophy induced by phenylephrine , and the histone acetylase inhibitor anacardic acid decreases histone hyperacetylation induced by phenylephrine and attenuates car -diac hypertrophy in the mice .

Objective To explore the effect of square dancing intervention on the quality of life of breast cancer patients having undergone radical surgery and postoperative chemotherapy. Methods Forty-nine breast cancer patients having undergone radical surgery and postoperative chemotherapy from February to October 2014 were set as the controls and another 51 patients having undergone the same radical surgery and postoperative chemotherapy from November 2014 to August 2015 were assigned to the intervention group. The control group was treated with conventional nursing intervention and the intervention group, on the basis of conventional nursing intervention, with square dancing intervention for 3 to 5 times each week, 30~90 minutes each time till the sixth cycle of chemotherapy. The quality of life before and after the intervention was evaluated with Function Assessment of Cancer Therapy-Breast (FACT-B). Result There was no significant difference in the score by FACT-B between the two groups before intervention ( P > 0 . 05 ) and after the intervention the difference in the score by FACT-B was statistically significant between the two groups (P <0.05). Conclusion Square dancing as the combination of sport therapy, group therapy and music therapy can improve the quality of life of breast cancer patients having undergone radical surgery and postoperative chemotherapy , so it can have some value in the future community care.

AIM: To establish the simultaneous determination of camphor,menthol,synthetic borneol and methyl salicylate in Shexiang Zhuanggu Plaster(Camphor,Mentholum,Borneolum Syntheticum,etc). by GC. METHODS: The sample solution was distilled in volatile oil determination apparatus.Naphthalene was used for the internal standard.The GC system consisted of capillary column,PEG-20M as the stationary phase,nitrogen as the carrier gas,FID as the detector.The programmed temperature-GC and internal standard method was employed to determine four kinds of components in Shexiang Zhuanggu Plaster. RESULTS: Camphor,menthol,synthetic borneol(borneol and isoborneol) and methyl salicylate in Shexiang Zhuanggu Plaster and naphthalene have been separated well under the same chromatographic condition.The average recovery of camphor,menthol,synthetic borneol and methyl salicylate were 96.92%(RSD=2.42%),98.03%(RSD=1.81%),99.02%(RSD=1.47%) and 98.15%(RSD=1.59%),respectively. CONCLUSION: The method is simple,accurate and separable,and can be used to control the quality of Shexiang Zhuanggu Plaster

Objective: To explore the effect of suberoylanilide hydroxamic acid (SAHA) improving cardiac hypertrophy via inhibiting histone deacetylases (HDAC) in experimental mice and to provide a new idea for prevention and treatment of cardiac hypertrophy. Methods: Cardiac hypertrophy mice model was established by thoracic aorta ligation. A total of 60 Kunming mice were randomly divided into 4 groups: Normal control group, Sham operation group, Cardiac hypertrophy (CH) group and CH+SAHA group. There were 6 mice used in each group. Myocardial cell morphology was observed by HE staining, cardiac function was assessed by echocardiography, mRNA and protein expressions of HDAC5 (the isoform of HDAC) and β-MHC were examined by RT-PCR and Western blot analysis. Results: The mice in CH group had myocardial cell hypertrophy, disordered arrangement and hyperchromatic nucleus. Compared with Sham operation group, CH group showed decreased left ventricular end diastolic diameter (LVEDD), left ventricular end diastolic volume (LVEDV) and increased thickness of inter-ventricular septum (IVS), allP<0.05; CH group presented elevated mRNA and protein expressions of HDAC5 and β-MHC,P<0.05. SAHA obviously decreased HDAC5 expression, down regulated cardiac hypertrophy related β-MHC gene expression, improved cardiac function and hypertrophy, all P<0.05. Conclusion: HDAC were involved in myocardial hypertrophy; SAHA could inhibit HDAC expression and therefore,improved myocardial hypertrophy in experimental mice.

Objective To investigate the effects of H3K9ac hyperacetylation mediated by histone acetylases on the overexpression of MEF2C in the hearts of fetal mice exposed to alcohol during pregnancy,and provide new interven-tion targets for prevention and treatment of cardiac dysplasia caused by alcohol exposure.Methods C57BL/6 mice were divided into 5 groups randomly,blank control group,dimethylsulfoxide (DMSO)group,alcohol group,alcohol +anacardic acid group and anacardic acid group,and then the hearts of fetal mice were collected to be analyzed.Chroma-tin immunoprecipitation and Western blot were used in assaying the binding of histone acetylases and the level of H3K9ac to the promoter of MEF2C in the hearts of fetal mice.The mRNA expression of MEF2C was tested by adopting real -time PCR.Results The level of H3K9ac in the promoter of MEF2C in the hearts of fetal mice exposed to alcohol was higher than that in the hearts of fetal mice exposed to saline (1 .30 ±0.1 9 vs 0.45 ±0.01 ),there was statistically significant difference (P <0.05),while the binding of E1 A -binding protein (p300),p300 /cyclic adenosine mono-phosphate response element binding protein -associated factor (PCAF)and steroid receptor coactivator -1 (SRC1 )to the promoter of MEF2C were abnormally elevated in the hearts of fetal mice treated by alcohol (1 .68 ±0.08 vs 0.82 ± 0.08,1 .08 ±0.05 vs 0.42 ±0.02,1 .1 8 ±0.05 vs 0.39 ±0.08),and there were statistically significant differences (all P <0.05).The expression of MEF2C mRNA in alcohol group was higher than that in blank control group (1 .36 ± 0.1 2 vs 0.29 ±0.03),there was statistically significant difference(P <0.05).However,a pan -acetylases inhibitor, anacardic acid,could decrease significantly the binding of p300 and PCAF to the promoter of MEF2C (1 .52 ±0.05 vs 0.63 ±0.09,1 .1 3 ±0.04 vs 0.45 ±0.04),and correct abnormal hyperacetylation of H3K9ac induced by alcohol (1 .58 ±0.08 vs 0.67 ±0.05),and down -regulate the over -expression of MEF2C in the hearts of fetal mice exposed to alcohol (1 .36 ±0.1 2 vs 0.41 ±0.05 ),and there were statistically significant differences (all P <0.05 ). Conclusions Hyperacetylation of H3K9ac mediated by p300 and PCAF may be a key regulatory factor in the over -expression of cardiac nuclear transcription factor MEF2C in the hearts of fetal mice exposed to alcohol during pregnan-cy.Anacardic acid can significantly attenuate the level of H3K9ac through inhibiting the binding of p300 and PCAF to the promoter of MEF2C,and down -regulate the over -expression of cardiac nuclear transcription factor MEF2C in the hearts of fetal mice.

Objective To provide scientific support for the prevention and control of expressway traffic injury by analyzing the epidemiological features of expressway traffic injury in China.Methods The secular trend and epidemiologic features of expressway traffic injury from 1994 to 2009 in China were analyzed.The indicators including mortality of mileage,accident rate of mileage,and accident mortality were used to evaluate the severity of expressway traffic injury in China.Cluster analysis was used to compare the differences of accident rate of mileage and accident mortality from 29 provinces,municipalities and autonomous regions.Results Except for the yearly increase of the accident mortality and the fluctuant decrease of the mortality and accident rate of mileage,other indicators reflecting the domestic expressway traffic injury from 1994 to 2009 were increased and then decreased,when the decreased indicators were still higher than those in 1994.In addition to the number of accidents of the four basic traffic injury indicators,the proportions of other three indicators(number of wounded and death,direct property damage)in the road traffic injury were increased year by year and the increase was the most obvious in regard of the direct property damage which had accounted for more than 30％ since 2006.The data from 2007 to 2009 showed that the peak time of traffic accidents was at around 4:00 am and around 4:00 pm.The traffic accidents caused by the drivers accounted for 93.02％ and the drivers with less than five years of driving accounted for 40.92％.Pedestrians and passengers were vulnerable to the expressway traffic injury and the accident mortality was the highest(72.75 per 100 accidents).Rear collision(44.17％)and bumping the fixed objects(16.35％)were the major accident types.There was a high accident proportion on the dry road(77.60％)and sunshine day(65.39％).Conclusions With worsening situation of the expressway traffic injury in China,we should,based on the epidemiological features of traffic injury on expressway,take appropriate measures such as strengthening traffic management of expressway and education of road users and improving the emergency medical service level.

ObjectiveTo observe the hong-huang antioxidant on oxidative stress in patients with breast cancer during chemotherapy, including their related blood indexes, blood rheology changes, and the effects on TCM clinical symptoms and symptoms of stress.MethodsA total of 60 cases of breast cancer patients during chemotherapy from Jiangsu Province Hospital of TCM was randomly divided into treatment group and control group, 30 cases in each group. On the basis of conventional therapy, patients in treatment group were given hong-huang antioxidant (100 mL per bag) from the 1st day to the 14th day of chemotherapy, 2 bags for each day (morning and evening). Patients in control group were given foundation treatment the same as the treatment group. Patients in the two groups had their serum NO, the content of SOD, and blood rheology tested on the day before chemotherapy, and the 4th, 7th, 14th days during chemotherapy. Meanwhile, their symptom score and the integral of stress reaction and TCM symptoms were also assessed. ResultsOn the 4th day, serum NO of treatment group decreased, while SOD content increased,without statistical significance between the two groups (P>0.05). Serum NO on the 7th, 14th days was significantly lower than that in the control group, but the content of SOD was higher than that in the control group, with statistical significance between the two groups (P<0.05). Hemorheology on the 4th day significantly decreased after treatment (P<0.05), and was significantly better than that in the control group (P<0.05); Clinical symptoms and stress symptoms integral in the treatment group were significantly lower than those in the control group on the 4th, 7th, 14th days of chemotherapy, with statistical significance (P<0.05).Conclusion Hong-huang antioxidant can significantly improve the oxidative stress status, serological indexes, related blood rheology indexes, and clinical symptoms in patients with breast cancer.

Objective To examine the effectiveness of simulation newborn simulator in neona-tal resuscitation training for pediatric residents. Methods From June 2011 to June 2012, 11 residents working in neonatal ward of the Third Hospital of Peking University were enrolled into the study. Eval-uation on the residents was made before the training. Training of simulated teaching using simulation newborn simulator was conducted and evaluation was made after the training. SPSS 18.0 was used for statistical analysis. Comparison was made between pre- and post-training test by paired t test. P<0.05 was considered statistical significant. Questionnaire survey was conduct to acquire residents' feedback. Results A total of 11 participants completed the training and finished the questionnaire. The score of pre-training was 37.82±1.17 versus that of post-training 39.18±0.87(t=4.89, P<0.01). All residents were satisfied with the simulation-based training. Conclusion Simulation training can improve pedi-atric residents' knowledge and skills in neonatal resuscitation.