AIM:To investigate the effects of tanshinone IIA ( Tan) on cardiac action potential in rats with a-cute cerebral ischemia (ACI).METHODS:ACI was established in rats accordingly .Animals were divided into 3 groups:sham group, ACI group, and ACI with Tan treatment group .The defect of neural function in each group was graded , elec-trocardiogram was measured , monophasic action potential was recorded , and the levels of cardiac troponin I ( cTnI ) and creatine kinase-MB ( CK-MB) were examined by commercially available kits .RESULTS:Compared with ACI group , Tan significantly decreased the scores of the defect of neural function , reduced the incidence and duration of the abnormalities in electrocardiogram , prolonged the effective refractory period , action potential duration at 50%repolarization and action po-tential duration at 90%repolarization, and inhibited the elevation of cTnI and CK-MB levels.CONCLUSION:Tan main-tains a stable heart rhythm in ACI rats , which may be related to its protective effect on ischemic myocardium .

ObjectiveTo investigate the outcomes of mother a nd baby smaller than 37 gestational age caused by preeclampsia. Method sThe data for 122 preterm birth that was single pregnancy with preecla mpsia in our hospital from January 1993 to December 2002 were collected. The pri nciple of diagnosis and treatment, the outcomes were analyzed retrospectively. T he 122 pregnant women were divided into 3 groups according to their gestational age, more than 28 weeks and smaller than 31 +6 weeks was the first group (28 cases), more than 32 weeks and smaller than 33 +6 weeks was the second grou p (26 cases), more than 34 weeks and smaller than 36 +6 weeks was the thir d group (68 cases). The data were statisted with SAS software.Results The earlier the pregnancy-induced hypertension happened, the earlier the preeclampsia occured, the mean time was 14 03 d, 16 85 d,22 22 d, respect ively, (P0.05), the outcomes of mothers were good. Increasing the gestational age under the cond ition that the occurrene of comptications was not increased, 60 64% pregnant wo men accepted the treatment of improving the maturity of fetal lung. There were n o differences among the three groups at the morbidity of perinatal SGA, intracra nial hemorrhage (P 0.05) .ConclusionWe could improve the outcomes of pret erm birth caused by preeclampsia by enhancing the perinatal care, treating and t erminating pregnancy activey Increasing the gestational age, improving the matur ity of fetal lung would decrease the morbidity of severe RDS and improve the pe rinatal outcome effectively.

Microorganism distributes in the organs of human body which connect with external environment, especially those organs in the gastrointestinal tracts, and it also plays a fundamental role in the physiopathology of the host's body. Because the microorganism is very small and has a great variety, it is difficult to reveal the significance of microorganism in the human physiopathology comprehensively and deeply. With the development of molecular biology, genomics, bioinformatics and other disciplines, the microbiome research will be more possible and easier. There are two key contents of microecology. One of these is to identify and quantify the diversity of microorganism, and the other is to reveal activity and the physiopathological function of microorganism in the host. Microbiome research methods, therefore, can be summarized as the traditional detection methods, construction of gene library, the genetic fingerprint analysis and molecular hybridization techniques and so on.
Computational Biology ; Gastrointestinal Microbiome ; Gastrointestinal Tract ; microbiology ; Humans

Objective; To evaluate the reliability and reasonability of maxillofacial skin color match using the digital camera. Methods; The stability of the experimental light source was evaluated before establishing the color measurement. 122 volunteers aged from 22 to 32 years were recorded by a Canon EOS 20D digital camera in studio environment when the light source was stable. Photographs were taken under a set exposure parameters(f/4.5,1/25 s,custom white balance,ISO 800) and saved as JPEG format. The CIE L~* a~* b~* color values were obtained from the digital images using Adobe Photoshop7.0 after color correction. All data were analyzed using SPSS 10. 0. Results;The experimental light source was stable in 21 to 70 minutes. It was suitable for color measurement during this period. The color parameters of all tested maxillofacial skin were:L~*49～66,a~*7 - 18,b~*5 -22. Conclusion;The assessment of maxillofacial skin color depend on method of measurement and instrument. The method of maxillofacial skin color matching by digital camera seems reliable.

Psychotherapy is a kind of medical treatments based on interpersonal interaction that is highly context-dependent.While psychotherapy is an important treatment in clinical work and its effectness has been confirmed with wide practical application,its adverse effects has received little attention.This article will review the literaturesand discuss the possible side effects and relatedfactors of psychotherapy.

Fetal origins of adult disease,the thrifty phenotype hypothesis, nutritional programming,metabolic programming indicate that nutrition in early life is important.Epidemiological survey demonstrates that insulin resistance is relataed to intrauterine growth retardation,but the exact mechanism is indefinite.This article is about the influence of intrauterine growth retardation to the structure and function of pancreas,and the genes that related to insulin resistance.

Objective To investigate the safety and efficacy of laparoscopic complete mesocolic excision (CME) with a medial-to-lateral approach for the treatment of right colonic cancer.Methods The clinical data of 46 patients with right colonic cancer who were admitted to the Longjiang Hospital from January 2010 to October 2013 were retrospectively analyzed.Twenty-four patients who received laparoscopic CME were in the laparoscopic group,and the other 22 patients who received open CME were in the control group.The intra-and postoperative condition and tumor recurrence of the 2 groups were compared.Patients were followed up till April 2014 after the operation.The measurement data were analyzed using the t test,and the count data were analyzed using the chi square test or Fisher exact probability.Results The operation was successfully done in the 2 groups.The operation time and intraoperative blood loss were (130 ± 26) minutes and (105 ± 29) mL in the laparoscopic group,and (156 ± 32)minutes and (136 ± 35)mL in the control group,with significant differences between the 2 groups (t =6.070,3.310,P＜0.05).The numbers of lymph nodes resected and lengths of resected specimen were 19 ± 4 and (28.0 ± 2.5)cm in the laparoscopic group,and 18 ± 4 and (26.8 ± 2.3)cm in the control group,with no significant differences between the 2 groups (t =0.560,1.770,P ＞0.05).The postoperative exhaust time and duration of postoperative hospital stay were (2.9 ±0.8)days and (12.3 ±2.7) days in the laparoscopic group,and (3.8 ±0.9)days and (14.1 ±2.2) days in the control group,with significant differences between the 2 groups (t =3.880,2.400,P ＜ 0.05).No operation-related complications was detected in the 2 groups.Forty-six patients were followed up for a mean time of 15 months (range,6-24 months).Two patients in the laparoscopic group and 2 in the control group were complicated with tumor local recurrence,with no significant difference between the 2 groups (P ＞ 0.05).No patients died during the follow-up.Conclusion Laparoscopic complete mesorectal excision with a medial-to-lateral approach for right colonic cancer is safe and feasible with satisfactory short-term outcome.

Positive serum hepatitis B surface antigen (HBsAg) is an indication of hepatitis B virus (HBV) infection,and the clearance of HBsAg usually stands for clinical cure of chronic hepatitis B (CHB).The clearance of HBsAg is influenced by the host,virus,antiviral drugs and other factors.This paper reviews the recent research progress on the related factors of HBsAg clearance in patients with CHB.

Objective To evaluate the role of phosphatidylinositol 3-kinase (PI3K)/protein-serinethreonine kinases (Akt) signaling pathway in dexmedetomidine postconditioning-induced reduction of myocardial ischemia-reperfusion (I/R) injury in rats.Methods Seventy-two healthy male Sprague-Dawley rats,aged 4-5 months,weighing 200-240 g,were heparinized and anesthetized with intraperitoneal pentobarbital sodium 40 mg/kg.Their hearts were rapidly excised and perfused in a Langendorff apparatus with oxygenated (95％ O2-5％ CO2) K-H solution at 0-4℃.The isolated hearts were randomly divided into 6 groups (n =12 each):control group (group C),group I/R,dexmedetomidine postconditioning group (gruop D),solvent group (group DMSO),PI3K inhibitor LY294002 group (group L) and LY294002 + dexmedetomidine postconditioning group (group L + D).After a 20 min stabilization period,the hearts were continuously perfused with K-H solution for 120 min in group C and were subjected to 30 min of global no-flow ischemia followed by 90 min of repeffusion in the other groups.Dexmedetomidine 100 nmo/L was added during the initial 30 min of reperfusion in D and L + D groups.LY294002 15 μmol/L was added in L group.0.02％ DMSO containing 15 μmol/L LY294002 was added in L + D group.0.02％ DMSO was added in DMSO group.HR,left ventricular end-diastolic pressure,left ventricular developed pressure and ± dp/dtmax were recorded at the end of 20 min stabilization and 15,30 and 90 min of reperfusion.The expression of phosphorylated Akt (p-Akt) and Akt was measured at 30 min of reperfusion.Myoeardial infarct size was determined using TTC staining at 90 min of reperfusion.Results Compared with group C,HR,left ventricular developed pressure and ± dp/dtmax were significantly decreased,and left ventricular enddiastolic pressure and myocardial infarct size were increased in the other 5 groups,and the expression of p-Akt was significantly up-regulated in group D (P ＜ 0.05).Compared with group I/R,HR was significantly decreased at 15 and 30 min of reperfusion,the expression of p-Akt was up-regulated,and myocardial infarct size was decreased in group D (P ＜ 0.05).Compared with group D,the expression of p-Akt was down-regulated,and myocardial infarct size and HR was increased in L + D group (P ＜ 0.05).Conclusion Dexmedetomidine postconditioning attenuates myocardial I/R injury throuth activating PI3K/Akt signaling pathway in rats.