Objective To compare the effects on cardiac function between pacings of right outflow tract ( RV-OT) and right vcntricular apex ( RVA) .Methods According to the digital table ,30 patients with high degree atrio-ventricular block which need for permanent pacemaker were randomly divided into the group RVA and group RVOT , 15 cases in each group ,and the DDD or VVI pacemaker was implanted .The programmable pacemakers was carried out,3,12 months after the operation.By Doppler ultrasound,the left and right ventricular synchronization time ,end diastolic diameter ( LVDd) ,left ventricular ejection fraction ( EF) was checked ,ECG QRS wave width ( QRSd) ,6 mi-nutes walking distance (6MWT) was examined.Results Followed up for 12 months,there was no shift,electrode dislocation and other complications .The left and right ventricular synchronization time of group RVOT [(59 ±10)ms] was significantly better that that in the RVA group [(80 ±11)ms](P<0.05).Following up,the EF[(60 ±4)%], LVDd[(45 ±6)mm],6MWT[440 ±10)m]in RVOT group after operation were better than [(48 ±5)%,(54 ±7) mm,(380 ±13)m](all P<0.05),the QRSd of RVOT group[(134 ±9)ms]was significantly shortened than that of group RVA[(186 ±20)ms](P<0.05).Conclusion RVOT septum pacing can be more effective in cardiac func-tion than RVA pacing .

Adolescent ; Bronchoscopy ; Child ; Child, Preschool ; Female ; Foreign Bodies ; surgery ; Humans ; Male ; Respiratory System ; Treatment Outcome

Animals ; Male ; Methyl Chloride ; therapeutic use ; Myocardium ; pathology ; Organothiophosphorus Compounds ; poisoning ; Rats ; Rats, Sprague-Dawley

Objective To investigate the relationship of placental vascular anastomosis and physical development and morbidity of the disease in twin neonates.Methods Fourteen pairs of twin neonates deliveried from Sep.2005 to Aug.2009 were enrolled in Newborn Intensive Care Unit,the Third Affiliated Hospital of Zhengzhou University.These twins were divided into 2 groups according the conditions of placental vascular anastomosis:significant placental vascular anastomosis group(group A) and no significant vascula anastomosis group(group B).Birth weight,head circumference,length,the morbidity of disease were all investigated in 2 groups.Clinic follow-up included neonatal behavioral neurological assessment(NBNA) and children′s development center of China(CDCC).The correlation of neonates placental vascular anastomosis between twin neonates were compared.Results There were statistically significant differences between group A and group B in birth weight,head circumference and body length(t=6.070,5.237,5.784,Pa

ObjectiveTo study the distribution, developmental patterns, and hormonal control of androgen re- ceptors(AR) in the developing and ethane dimethane sulfonate(EDS) treated male SD rat epididymis. MethodsThe ABC technique of immunohistochemistry and image analysis were used to assess optodensity means (OPTDM) of AR, providing a measure of relative nuclear AR concentration. ResultsThe specific AR immunostaining was observed in the nuclei of epididymal epithelium, peritubular smooth muscle cells and intertubular connective tissue cells. The rela- tive AR concentrations varied with the different segments of the epididymis in the adult rat(P<0. 05 or P<0.01). AR protein was highest in the caput (0. 763--0. 026),lowest in the corpus (0. 712±0. 025) and intermediate in the cauda (0. 736±0. 008). Levels of epididymal AR changed with development. In the cauda, AR level was highest on day 21 (0. 773±0. 028),intermediate on day 35(0. 762±0. 022),and lowest on day 90～120(0. 736±0. 008). The 90～120d group was significantly different from the 21d group (P＜0. 01)and 35d group (P＜0. 05). After the adult rats were treated with EDS to eradicate Leydig cells and endogenous testosterone, it was observed that the OPTDM of AR in the epididymal cauda epithelium was significantly reduced (P＜0. 001), and was restored to the control level by using ex- ogenous testosterone replacement (P＜0. 001). Conclusion These results suggest that the epididymal corpus depends least on androgens and the AR expression in the epididymis decreases with age and is dependent on circulating andro- gens.

The combined application of statins that inhibit HMG-CoA reductase and fibrates that activate PPAR-α can produce a better lipid-lowering effect than the simple application, but with stronger adverse reactions at the same time. In the treatment of hyperlipidemia, the combined administration of TCMs and HMG-CoA reductase inhibitor in treating hyperlipidemia shows stable efficacy and less adverse reactions, and provides a new option for the combined application of drugs. In this article, the pharmacophore technology was used to search chemical components of TCMs, trace their source herbs, and determine the potential common TCMs that could activate PPAR-α. Because there is no hyperlipidemia-related medication reference in modern TCM classics, to ensure the high safety and efficacy of all selected TCMs, we selected TCMs that are proved to be combined with statins in the World Traditional/Natural Medicine Patent Database, analyzed corresponding drugs in pharmacophore results based on that, and finally obtained common TCMs that can be applied in PPAR-α and combined with statins. Specifically, the pharmacophore model was based on eight receptor-ligand complexes of PPAR-α. The Receptor-Ligand Pharmacophore Generation module in the DS program was used to build the model, optimize with the Screen Library module, and get the best sub-pharmacophore, which consisted of two hydrogen bond acceptor, three hydrophobic groups and 19 excluded volumes, with the identification effectiveness index value N of 2. 82 and the comprehensive evaluation index CAI value of 1. 84. The model was used to screen the TCMD database, hit 5,235 kinds of chemical components and 1 193 natural animals and plants, and finally determine 62 TCMs. Through patent retrieval, we found 38 TCMs; After comparing with the virtual screening results, we finally got seven TCMs.
Acyl Coenzyme A ; metabolism ; Animals ; Databases, Factual ; Drugs, Chinese Herbal ; chemistry ; pharmacology ; Hydrophobic and Hydrophilic Interactions ; Hydroxymethylglutaryl-CoA Reductase Inhibitors ; chemistry ; pharmacology ; Lipid Metabolism ; drug effects ; Lipids ; blood ; Medicine, Chinese Traditional ; Models, Molecular ; Quantitative Structure-Activity Relationship ; Technology

In this study, UPLC-MS/MS was adopted to determine the contents of five ephedrine alkaloids (Norephedrine, Norpseudoephedrine, Ephedrine, Pseudoephedrine, Methylephedrine) in plasma and urine in rats after the combined administration of Ephedrae Herba-Gypsum Fibrosum and calculate relevant pharmacokinetic parameters, in order to discuss the effect of the combined administration of Ephedrae Herba-Gypsum Fibrosum on plasma pharmacokinetics and urinary excretion characteristics. According to the results, after being combined with Gypsum, the five ephedrine alkaloids showed similar pharmacokinetic changes, such as shortened t(max), accelerated absorption rate, but reduced AUC(0-t) and V(z)/F, which may be related to the increase in urine excretion. Besides, Gypsum was added to enhance C(max) of Pseudoephedrine and prolong MRT(0-t) of Methylephedrine, so as to enhance the anti-asthmatic effect of Ephedrae Herba and resist the toxic effect of Norephedrine and Ephedrine. This study proved the scientific compatibility of Ephedrae Herba-Gypsum Fibrosum and provided a reference for studies on the prescription compatibility regularity and relevant practices.
Alkaloids ; blood ; pharmacokinetics ; urine ; Animals ; Calcium Sulfate ; pharmacokinetics ; Drugs, Chinese Herbal ; pharmacokinetics ; Ephedra ; chemistry ; Male ; Rats ; Rats, Sprague-Dawley ; Urine ; chemistry

The cholesterol oxidase producing strain Brevibacterium sp.DGCDC-82 was treated with NTG (1 mg/mL)under ultrasonicztion(200 W,50 kHz).A red mutant named Brevibacterium sp.DGCCN-25 showed higher and stable production of cholesterol oxidase was obtained.The enzyme activity was increased by 140%,it is 1.24 U/mL.Then dealed with DGCCN-25 using the same method,two revertants were obtained,one was white and the other was rose pink.The enzyme activity of two revertants was obvious decrease,they are 0.17 U/mL and 0.69 U/mL.The results showed the positive correlation between COD acticity and red pigment producing by Brevibacterium sp..The relativity model can be used as a method of screening for mutation and directed evolution.

Objective To observe the clinical efficacy of intradermal needle plus acupoint application with Da Huang (Radix et Rhizoma Rhei) in preventing constipation after craniocerebral injury. Method Two hundred patients with acute craniocerebral injury were randomized into a treatment group and a control group, 100 cases each. The control group received conventional nursing care to prevent constipation, while the treatment group was additionally treated with intradermal needle plus acupoint application with Da Huang (Radix et Rhizoma Rhei). The occurrence of constipation within a week was observed in the two groups. Result The occurrence rate of constipation was 12.0％ in the treatment group versus 32.0％ in the control group, and the between-group difference was statistically significant (P<0.05). Conclusion Intradermal needle plus acupoint application can effectively reduce the frequency of constipation in patients with acute craniocerebral injury.

[Objective] To evaluate the diagnostic values of multi-detector spiral computed tomography (MDCT) in pediatric sacrococcygeal tumors (SCT) and to improve the diagnostic ability.[Methods] 54 children (22 male and 32 female,age between 1 day and 16 years old) with pathologically confirmed SCT were involved in our study.All of them received 64-row spiral Computed Tomography before surgery,CT characteristics and clinical data were retrospectively analyzed.[Results] Pediatric SCT are more common in female children under four years old,with the germ cell tumors most common,followed by neurogenic tumors.Among the 54 SCT,39cases were malignant and 15 were benign (malignant∶ benign =2.60∶1).In CT image findings,37 cases (68％) were mainly solid mass,with 31 cases confirmed malignant by pathology.8 cases (15％) were mainly cystic,with all of them confirmed benign by pathology.9 cases (17％) were cystic-solid or with obvious necrosis in solid mass,with 8 cases confirmed malignant by pathology.[Conclusion] Malignant pediatric SCT are more common than benign SCT.Most malignant SCT are mainly solid mass or cystic-solid or with obvious necrosis in solid mass,and most benign tumors are mainly cystic.Combined with clinical data,MDCT can help to correctly diagnose SCT before surgery.