The incidence of bronchial asthma in children is increasing nowadays.More and more studies have showed that epigenetics plays an important role in the pathogenesis of asthma.One of them are histone modification(acetylation and deacetylation),which is catalyzed by histone acetyltransferase (HAT) and histone deacetylase (HDAC).HAT and HDAC can mediate asthma via causing Th1/Th2 imbalance,increased airway hyperresponsiveness,regulation of various inflammatory medium and so on.This paper reviews the HAT and HDAC mediated incidence of asthma and other possible mechanisms,the latest of glucocorticoid in the treatment of children with asthma epigenetic mechanisms.

Sulfur dioxide has been considered as a toxic gas.However,recently more and more studies have shown that sulfur dioxide can be generated endogenously in cardiovascular system and has broad physiologic effects.Studies demonstrate that sulfur dioxide plays an important role in the regulation in the pathophysiologic process of many cardiovascular diseases,such as hypertension,atherosclerosis.These findings suggest that sulfur dioxide might be a novel endogenous gaseous signaling molecule involved in the regulation of cardiovascular functions.

Objective:To study the factors affecting amplified fragment length polymorphism(AFLP) of Carthamus tinctorins L.genome,and to develop and optimize the AFLP reaction system,laying a foundation for Marker-assisted breeding of Carthamus tinctorins L..Methods: Cetyl-trimethyl-ammonium-bromide(CTAB) method was used to extract the genomic DNA of Carthamus tinctorins L.,whose concentration and purity were determined by UV spectrophotometry.The genomic DNA was digested by restricted enzyme and ligated with one-step method or two-step method so as to find out which one is more suitable.Then the products were prepared with different dilution multiples(5,10,15,20,25 and 30) for pre-amplification and with different concentrations of gradients(10,25,50,75,100,150 and 200)for selected amplification.Then they were subjected to PAGE electrophoresis and silver-staining after denaturing at 95℃ for 8 min.Results: The AFLP reaction system for Carthamus tinctorins L.genome included the following steps: the genomic DNA was precipitated with alcohol by CTAB method to avoid contamination by any inhibitors;the DNA was completely digested by MseⅠ and EcoRⅠ at 37℃ for 3 hours.Two-step method was superior to one-step method in this AFLP system.The digestion time was 3 hours at 37℃ and ligated at 16℃ over night,with Buffer 2(NEB Company) as the specific buffer.Furthermore,the optimal dilution was 25 folds for pre-amplification and 75 folds for selected amplification. In this reaction system,the strips in PAGE electrophoresis were clear and less decomposed.Conclusion: The AFLP reaction system in this experiment is suitable for silver-stained AFLP of Carthamus tinctorins L.analysis.

Objective:To investigate the effects of Penehyclidinehydrochloride(PHCD) on endotoxin-induced cerebral edema.Methods:one handred and five S-D male rats(200～220g)were randomly divided into 5 groups(n=21):groupC control;groupL LPS;group DL,DM and DH received intraperitoneal PHCD 0.05,0.15 or 0.45mg/kg 10min before lipopolysaccharide(LPS) administration.Cerebral edema was induced by internal carotid arterial LPS 150?g.Seven animals each group were decapitated at 4、6 and 12h after operation and their brains were immediately removed for determination of water content of brain and microscopic examination.Results:Administration of LPS caused severe brain damage and significantly increased water content of the brain.The LPS-induced changes were mitigated by pretreatment with different doses of PHCD in groupDM and DH,but there was no significant difference between the two groups.Conclusion:Pretreatment with PHCD can attenuate LPS-induced cerebral edema.

Objective To investigate the hemodynamic characteristics of superior thyroid artery and its corresponding clinical significance with patients of Graves'hyperthyroidism.Methods Thirty patients with Graves'hyperthyroidism received Doppler ultrasonography.Patients were grouped with different serologic indices at 4 month after radioiodine therapy as relief(R),uncured(U)and hypothyroidism(H).The relationships between thyroid volume(V),superior thyroid artery peak systolic velocity(PSV),end diastolic velocity(EDV),RI,PI and systolic accelerating time(SAT)and the 4-month outcome were analyzed respectively.Results Besides the effect of 24 h-131I uptake rate on patients'short-term outcome,V,PSV and RI were of predominate prognosis value(P＜0.01).PSV and V of group R were positively correlated with 131I dose respectively(r1=0.825,r2=0.697;P＜0.001),while SAT of group R was negatively correlated with 131I dose(r=-0.489,P＜0.05).Conclusions Patients with high V,PSV and RI maybe still suffering hyperthyroidism after regular dosage of 131I therapy.Doses of 131I should be added appropriately for patients with high PSV and V,but short SAT to achieve complete remission,while it should be reduced for patients in opposite condition to avoid occurrence of hypothyroidism.

Since Epstein Barr virus was shown to encode microRNAs(miRNAs) in 2004, more than 470 miRNAs have been discovered in α-, β-, and γ-herpesviruses. MiRNAs are small non-coding RNA molecules and generally only have 18-25 nucleotides in length, which can regulate the expression of target genes by targeting its transcripts. Herpesvirus-encoded miRNAs not only target the key genes from latency to lytic replication, but also regulate various host cellular genes. Current data manifest that herpesvirus-encoded miRNAs can regulate viral latent infection and lytic replication, immune recognition, apoptosis, and tumorigenesis. The purpose of this paper is to summarize the targets and their fuction of hepesvirus-encoded miRNAs, in order to provide theoretical support for further analysis herpesviral pathogenesis.
Animals ; Herpesviridae ; genetics ; metabolism ; Herpesviridae Infections ; virology ; Humans ; MicroRNAs ; genetics ; metabolism ; RNA, Viral ; genetics ; metabolism

Entrepreneurship of the students in TCM colleges can help alleviate the pressure of employment and take advantages of TCM to benefit the public, deepen medical reform, promote the heritage and develop the TCM culture. The influence of the environment could be throughout the whole process of entrepreneurship. The entrepreneurial environment of the students from TCM colleges were analyzed in the following three factors, such as family environment, school environment, and social environment. Only these three environment work together could help entrepreneurship go well. Thus, it is important to change the traditional concept, develop education system of entrepreneurship, and improve the entrepreneurial support system.

Although reports on the diagnosis of CHD angina pec-toris are plenty, yet studies on nature and typing of Zheng on its two main types, spontaneous and overworked, of anginal attacks are scarce. During the period Jan. 1985 -July 1994. we treated 92 cases of spontaneous angina pectoris and 303 cases of overworked angina on the basis of TCM syndrome typing, in the hope of giving assistance to the correcttherapy of this disease.

Objective To discuss the influence of high-quality rehabilitation model intervention on postoperative anxiety,depression and quality of life in patients with colorectal cancer.Methods 60 patients with colorectal cancer in our hospital were randomly divided into the observation group and the control group,30 cases in each group.The control group was given routine nursing measures.The observation group received high-quality rehabilitation model intervention on the basis of routine nursing measures.SAS and SDS were used to observe the psychological status of the patients,SF-36 was used to observe the quality of life of patients.Results Two weeks after operation,SAS,SDS scores of the observation group were (47.5 ± 5.2) points,(49.7 ± 5.7) points,which were significantly lower than (55.2 ± 6.3) points,(53.4 ± 5.8) points of the control group (t =5.163,2.492,all P ＜ 0.01).Two weeks after operation,the general health,physiological function,physical function,body pain,activity,social function,emotional function,mental health,quality of life score in the observation group were (79.06 ± 3.78)points,(79.57 ±3.96)points,(78.39 ± 3.71) points,(76.98 ± 3.52) points,(77.59 ± 4.16) points,(75.52 ± 4.85) points,(79.28 ±4.91) points,(78.31 ± 4.27) points,which were significantly higher than those of the control group (74.19 ±4.07)points,(75.24 ± 4.12) points,(71.92 ± 4.38) points,(73.25 ± 3.47) points,(74.06 ±4.13)points,(72.17 ±4.21) points,(74.65 ± 4.35) points,(73.87 ± 3.92) points(t =4.802,4.150,6.174,4.133,3.298,2.857,3.866,all P ＜ 0.01).Conclusion High-quality rehabilitation model can significantly improve the postoperative anxiety and depression,and improve the quality of life of patients with colorectal cancer.

The significance of distributive retrieval methods of special medical resources on foreign navy networks was analyzed from the development of medical information resources and the value of medical information on foreign navy networks followed by a description of key words retrieval method, classification engine retrieval method, and link retrieval method of resources on foreign navy networks in order to speed up the development of navy special medical literature in China .