DNA methylation is part of the epigenetic modification process,which can lead to aberrant gene expression. Cytochrome P450 enzyme,cyclooxygenase,lipoxygenase and monoamine oxidase are a class of enzymes produced by human tissues,which are involved in the oxidization pro?cess of endogenous and exogenous chemicals. The methylation patterns of these enzyme genes are dif?ferent between normal tissues and pathological ones. Abnormal methylation patterns will change en?zymes′expression and function,and affect the occurrence and development of diseases. This paper re?viewed the characteristic changes of four oxidative metabolic enzyme genes in certain diseased tis?sues,the impact on methylation status of the metabolic activity of chemicals and on human health. It is hoped that this review can provide a new theoretical basis for the study on the toxic mechanism of chemicals and for diagnosis of diseases.

0.05). The observation about reliability markers indicated:there were no toxic and side effects. Conclusion There was no obvious difference in the effectiveness on treating cough in children for attacking on the lung by wind and heat (acute bronchitis) between the treated group and the control group. During the reliability observation, Kechuanling Effervescent Troche indicated good clinical reliability.

Objective To systematically review the efficacy and safety of drug-eluting stent(DES) versus coronary artery bypass grafting(CABG) in the treatment of left anterior descending coronary artery(CAD) stenosis.Methods Literature about the efficacy and safety of DES versus CABG for LAD stenosis was retrieved from digital databases of MEDLINE, EMbase, PubMed, and the Cochrane Library by November 2016.Data extraction and quality assessment of included studies were conducted by two independent reviewers.RevMan 5.3 software was used to perform meta-analysis.Results Ten studies involving 9771 patients were finally included.The results of meta-analysis showed that there was no significant difference in mortality [RR=0.88,95%CI(0.70,1.11),P=0.28],major adverse cardiovascular events[MACE,RR=1.04,95%CI(0.88,1.24),P=0.63] or myocardial infarction [MI,RR=0.92,95%CI(0.56,1.53),P=0.75], but PCI-DES significantly increased the risk of TVR [OR=2.43,95%CI(1.61,3.69),P<0.0001].Conclusion For LAD stenosis, PCI-DES strategy causes as high a rate of mortality, MACE and MI as CABG or DES, but PCI-DES can significantly increase the risk of TVR, so we should be cautious clinically.

Guidelines of Prevention and treatment of Children's Influenza A (H1N1) with TCM includes four parts of prevention, diagnosis, clinic treatment and nursing. The drug prophylaxis stresses on administration by identified body without diseases, which includes normal constitution, qi-deficiency constitution, inner-heat constitution and phlegm-damp constitution, children of different constitution are given different appropriate drugs. The treatment bases on syndrome differentiation, such as mild syndrome, severe syndrome, crises and convalescence. The syndrome-classification includes wind-heat invading the exterior, dampness obstructing defensive qi, the heat-toxin blocking the lung, exuberant toxin in both qi and ying, deficiency of heart-yang, the evil sinking into jueyin, residual evil remaining in the body and the deficiency of both qi and yin. The nursing emphasizes the isolation, keeping body warm, bland diet and nursing during convalescence.

Objective To systematically review the efficacy and safety of Jinlian Qingre Effervescent Tablet (JQET) compared to Ribavirin for acute upper respiratory tract infection in children.Methods CNKJ,CBM,WanFang Data,VIP,PubMed,EM base,Web of science,and Cochrane Library databases were searched from the date of establishment to December 2016 for all randomized controlled trials (RCTs) and quasi-RCT on the use of JQET in children with acute respiratory infections.Meta-analysis by using Rev Man 5.3.Results A total of seven RCTs involving 782 patients were included,while the group of JQET involving 392 patients,Ribavirin involving 390 patients.The results ofmeta-analysis indicated that the efficacy in Jinlianqingre group was superior to that of Ribavirin control group,such as clinical effectiveness [RR=l.26,95％CI=(1.18,1.34),P＜0.000 01],fever subsidence time [MD=-1.54,95％CI (-1.79,-1.30),P＜0.000 01],the time of subsided cough [MD=-1.53,95％CI (-1.79,-1.27),P＜0.000 01],the disappearance time of pharyngalgia [MD=-1.29,95％CI (-1.88,-0.70),P＜0.000 1],and Pharyngeal congestion disappearance time [MD=-2.80,95％CI(-3.11,-2.49),P＜0.000 01].The difference was statistically significant.There were three adverse reactions reported in JQET group.Conclusion JQET is superior to the Ribavirin control group in clinical effectiveness,fever subsidence time,time of subsided cough,disappearance time of pharyngalgia,and pharyngeal congestion disappearance time to treat acute upper respiratory tract infection in children.However,these results should be carefully interpreted,and this conclusion has to be further verified by high quality,large scale RCTs.

Objective To analyze the incidence,bacterial spectrum and clinical features of peripherally inserted central catheter-associated bloodstream infection in neonates, and to investigate the effect of infection control strategies on the occurrence of infection,by which it is helpful in choosing effective strategies for clinical practice. Methods Clinical data, results of blood culture and culture of the catheter tip were collected from 72 infants (66 of them were very low birth weight) admitted to NICU from July, 2007 to August, 2008. The incidence of PICC-associated bloodstream infection (PICC-BSI) in the old hospital was compared with that of the new hospital. Results Bacterial colonization was not found. PICC-BSI was found in 15 cases (18. 1%), including 11 cases (13.2%) with definite sepsis and 4 cases (4. 8 %) with clinical sepsis.The incidence of PICC-BSI was 10. 2/1 000 PICC-days as a whole,with 16. 1/1 000 PICC-days in the old hospital and,7. 7/1 000 PICC-days in the new hospital respectively. Eleven organisms were isolated including Coagulase negative staphylococcus (CoNS) (4 strains), Acinetobacter baumannii (3 strains), Klebsiella pneumonia (2 strains), Enterococcus(1 strain), and Candida parapsilosis (1 strain). The incidence of PICC-BSI in the new hospital was lower compared with that of the old hospital. Conclusion Most of the isolated organisms of PICC-BSI are opportunistic and multi-drug resistant pathogen. PICC-BSI can be reduced by the effective infection control strategies in NICU.

It's been confirmed that acupuncture-moxibustion is effective in treating primary dysmenorrhea, and the efficacy is closely related to the intervention time. By summarizing the latest research progress on real-time intervention and pre-intervention of acupuncture-moxibustion in treating primary dysmenorrhea, this articlewas to discuss about the effect of intervention time on the efficacy in treating primary dysmenorrhea and thus to provide evidence to choose the optimal intervention time. It brought up that real-time intervention of acupuncture-moxibustion can produce a significant analgesic effect in treating primary dysmenorrhea, while pre-intervention of acupuncture-moxibustion presents its advantages in generally regulating the body function. Therefore, the treatment of primary dysmenorrhea should combine real-time intervention and pre-intervention of acupuncture-moxibustion to enhance the clinical efficacy.

Aim To look for cold-protective drugs treating cryogenic freezing that may bring great damage to animal physiological system.Methods The protective effect of curcumin on frozen damage and the changes of thyroid function in mice were studied in this study.Quantitative analysis of the changes in survival time and metabolic indexes in mice disposed at(-20±1)℃ was conducted.Mouse serum free triiodothyronine(FT3) and free thyroxine(FT4) contents were detected by ELISA kit.HE staining was used to observe thyroid tissue morphological items.The expression of genes related to thyroid function was assessed via real-time quantitative PCR.Results The intraperitoneal injection of curcumin(12.5~50 mg·kg-1) could remarkably prolong the survival time of mice when exposed to cryogenic freezing.HE staining results displayed a recovered thyroid injury in morphology in the curcumin group, further with a notably improved metabolic indexes and evidently increase in serum FT3 and FT4 levels.The real-time quantitative PCR results indicated that the expressions of sodium iodide symporter(Nis), thyroglobulin(Tg) and thyroid peroxidase(Tpo) were up-regulated, and the expression of thyroid-stimulating hormone receptor(Tshr) was down-regulated.Sodium levothyroxine collabrated with the promoting thyroid effects of curcumin, while propylthiouracil inhibited the effects.Conclusion Curcumin can prolong the survival time of the cryogenic freezing mice, which is closely related to its ability to promote thyroid function.

Background: Although there are some Chinese herbal medicines in treatment of constipation, but no multi-center randomized controlled trials have been carried out to prove their effectiveness. Objective: To evaluate the safety and efficacy of Yunchang Capsule in treatment of functional constipation with deficiency of both qi and yin and internal accumulation of poisonous pathogenic factors syndrome, and to explore the clinical dosage. Design, setting, participants and interventions: A randomized, double-blinded controlled, multicenter trial was conducted. A total of 240 patients with functional constipation from West China Hospital of Sichuan University, Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, the First Affiliated Hospital of Tianjing University of Traditional Chinese Medicine and Fujian Academy of Traditional Chinese Medicine were randomly divided into three groups: low dose group (80 cases), high dose group (80 cases) and control group (80 cases). Patients in the low dose group were treated with two pills (0.35 g/pill) of Yunchang Capsule and one pill of Yunchang Capsule simulant for three times daily; patients in the high dose group were treated with three pills (0.35 g/pill) of Yunchang Capsule for three times daily; and patients in the control group were treated with three pills (0.35 g/pill) of Biantong Capsule for three times daily. The therapeutic course was 14 days. Main outcome measures: Clinical symptoms, syndromes, and adverse effects were observed before and after the treatment, and blood, urine and stool tests, hepatorenal function and electrocardiogram were also examined. Results: Two cases were excluded, eleven cases were lost to follow-up, and there were 234 patients entered to intention-to-treat (ITT) analysis. After the treatment, the therapeutic effects were calculated by full analysis set (FAS) and per-protocol population set (PPS) analysis respectively. The effects on functional constipation in FAS showed the response rates in the low dose, high dose and control groups were 86.25% (69/80), 82.90% (63/76), and 70.52% (55/78) respectively, and PPS analysis showed the response rates were 85.71% (66/77), 83.56% (61/73), and 70.13% (54/77) respectively. There were no significant differences among the three groups (P>0.05). The effects on traditional Chinese medicine syndrome in FAS showed the response rates in the low dose, high dose and control groups were 78.75% (63/80), 69.74% (53/76), and 67.95% (53/78) respectively, and PPS analysis showed the response rates were 77.92% (60/77), 69.87%(51/73), and 67.53% (52/77) respectively. There were also no significant differences among the three groups (P>0.05). No severe adverse events were observed. Conclusion: Both low dose and high dose of Yunchang Capsule are effective and safe in treatment of functional constipation with deficiency of both qi and yin and internal accumulation of poisonous pathogenic factors syndrome.

AIM:To investigate the expression of C/EBP homologous protein (CHOP) and its correlation with proliferative/apoptotic ratio (PAR) in colorectal adenoma-carcinoma sequence under the same genetic background .ME-THODS:Four kinds of tissue samples under the same genetic background from 23 patients, including normal colorectal tissue, adenoma with low-grade intraepithelial neoplasia , adenoma with high-grade intraepithelial neoplasia and colorectal adenocarcinoma samples , were collected .TUNEL method and Ki-67 immunohistochemistry were applied to determine the PAR.The expression of CHOP was detected by immunohistochemistry SABC method .RESULTS: ( 1 ) Under the same genetic background , the level of CHOP expression is significantly higher in colorectal adenocarcinoma than that in the ade -noma with high-grade intraepithelial neoplasia , the adenoma with low-grade intraepithelial neoplasia and the normal muco-sa.The level of CHOP expression was significantly higher in the adenoma with high -grade intraepithelial neoplasia than that in the adenoma with low-grade intraepithelial neoplasia and the normal mucosa .The level of CHOP expression was signifi-cantly higher in the adenoma with low-grade intraepithelial neoplasia than that in normal mucosa .(2) Under the same ge-netic background , PAR was significantly higher in the colorectal adenocarcinoma than that in the adenoma with high -grade intraepithelial neoplasia , the adenoma with low-grade intraepithelial neoplasia and the normal mucosa .PAR was significant-ly higher in the adenoma with high-grade intraepithelial neoplasia than that in the adenoma with low-grade intraepithelial neoplasia and the normal mucosa .PAR was significantly higher in the adenoma with low-grade intraepithelial neoplasia than that in the normal mucosa.(3) CHOP levels were positively correlated with PAR in the adenoma with low-grade intraepi-thelial neoplasia , adenoma with high-grade intraepithelial neoplasia and colorectal adenocarcinoma .CONCLUSION:CHOP expression and PAR continuously increased and positively correlated along the adenoma -carcinoma sequence , indica-ting that endoplasmic reticulum stress mediates the carcinogenesis of colorectal adenomas .