APOBEC3 is a class of cytidine deaminase, which is considered as a new member of the innate immune system, and APOBEC3G belongs to this family. The research about APOBEC3G is a new direction of innate immune defense mechanism against virus. APOBEC3G has the restrictive activity on many viral replications, which deaminates dC to dU in the viral genome and then induces extensive hypermutation. APOBEC3G can also interrupt viral replication at several phases such as reverse transcription, replication, nucleocapsid and so on by non-deamination mechanisms. However, virus can encode viral proteins to counteract the restriction activity of APOBEC3G. Elucidation of the antagonistic interaction between APOBEC3G and the virus will be contributed to development of new antiviral drugs in the future.

Objective To assess the changes in blood coagulation induced by intraoperative blood salvage and reinfusion. Methods Thirty-six ASA I - II patients aged 15-63 yr undergoing elective major orthopedic surgery were paired according to their sex and type of surgery. The paired patients were randomly allocated to either autotransfusion group (study group) or homologous blood transfusion group (control group). Patients with malignant tumor were excluded. Anesthesia was induced with propofol, fentanyl and succinylcholine and maintained with isoflurane inhalation supplemented with intermittent iv boluses of fentanyl and vecuronium. During operation deliberate hypotension was induced with 0.01% sodium nitroprusside. Systolic blood pressure was maintained at (90?5) mm Hg or reduced by 30% of the baseline systolic blood pressure. During operation lactated Ringer' s solution was infused at a rate of 10 ml?kg-1?h-1 . In both groups, blood loss was replaced by equal volume of gelatine. Hct was maintained above 25% , CVP at 6 - 10 cmH2O and urine output above 50 ml? h-1 . In autotransfusion group, shed blood was collected and heparinized. Red cells were separated and washed for reinfusion. In control group red cell concentrate was infused. Hb, Hct, platelet count (PLT), prothrombin time (PT), activated partial thromboplastin time (APTT), plasma fibrinogen concentration, and thrombin time (TT) were determined and thromboelastography (TEG) was performed before operation (T0 ), before blood transfusion (T1 ), 1 h after blood transfusion (T2) and 24 h after operation (T3) .Results The two groups were comparable with regard to age, sex, duration of operation, blood loss [ (1030 ?610) ml vs (989?586) ml] and the amount of crystalloid and colloid infused during operation. In autotransfusion group Hb decreased significantly after hemodilution. There was no significant difference in PT, APTT, FIB concentration and TT between the two groups. TEG showed that reaction time (r) increased significantly after hemodilution in autotransfusion group as compared with the preoperative baseline value (T0) but there was no significant difference in TEG parameters including r time between the two groups. Conclusion Intraoperative blood salvage and reinfusion induce no significant effects on blood coagulation as compared with allogenic blood transfusion.

Objective:To investigate the correlation between the component contents and near-infrared spectral characteristics of sophora pieces from different habitats to confirm the near-infrared spectral features of sophora pieces. Methods: The near-infrared spectroscopy of the sophora extract was determined to confirm the characteristic absorption of principal components. Meanwhile, the content of main ingredients in sophora pieces was measured by HPLC, and the near-infrared spectral characteristics of sophora pieces from different places were compared analyzed. Results: The near-infrared spectral features of sophora pieces from different habitats showed some differences with something in common. There was a close relationship between the near-infrared spectral features and the compositions and the main ingredients. Conclusion:Combining with the near-infrared spectra of sophora extract can effectively identify the characteristics of sophora pieces from different places, which is beneficial to the establishment of a reasonable and effective near-in-frared qualitative analysis model.

Objective To set up the standard of normal prostate volume based on MRI measurement.Methods 30 healthy male adults without any urogenital symptoms were included in this study.The subjects were divided into four groups according to their ages.The length,width and height of the prostate and central gland were measured by MRI.The volume,weight and the rate of central gland to prostate proportion were calculated and compared in various age groups.Results For normal prostate:the average width was(3.02?0.47)cm,the length was(4.19?0.52)cm,the height was(3.24?0.34)cm,the volume was(22.01?7.48)cm 3,and the weight was(23.11?7.86)g.There were significant differences in the value of length,the width,the volume and the weight in various age groups(P=0.006,0.001,0.014 respectively);For the central gland:the width was(2.01?0.41)cm,the length was(2.06?0.34)cm,the height was(2.01?0.32)cm,the volume was(4.46?1.74)cm 3,the weight was(4.68?1.82)g,and the ratio of central gland volume to whole prostate volume was 20.4%.The volume and weight of central gland was significantly different in various age groups.There were significant differences between the contrast-enhancement of central gland and peripheral zone(P=0.0001).The central gland was obviously enhanced at vein phase.Conclusion The volume of the prostate and the central gland are positive correlated with the age.With the ages increased,the prostate and the central gland volume are increased.

Objective To study the diagnosis and stage of benign prostatic hyperplasia(BPH)with quantitative MRI measurement.Methods 25 cases of BPH proved by pathology were undergone MRI examinations.The length,width and height of the prostate and central gland were measured on MR images.The volume,weight and the central gland to prostate proportion were calculated and compared in various age groups.Results The width,length,height,volume and weight of prostate in BPH were larger than those in normal prostate.The central gland to prostate proportion in BPH was 46.1%,which was much larger than that of normal prostate(20.4%).The width,length,height,volume and weight of prostate and central gland were significantly different in various hyperplasia degree groups(P

In order to investigate the influence of angiotensin II on hematopoietic system, CD34+ cells in cord blood were purified, and the effects of angiotensin II in combination with various cytokines on their growth and differentiation were studied by cell culture in vitro. It was found that angiotensin II in suspending medium could stimulate both BFU-E and CFU-GM expansion. The number of BFU-E and CFU-GM was increased with the increases of angiotensin II concentrations during a certain range. In addition, the expansion fold of CFU-GM was increased from 2.3 +/- 0.8 times to 7.8 +/- 2.3 times when angiotensin II was added in the presence of SCF+G-CSF+GM-CSF+IL3 cytokines mixture. Similarly, the expansion fold of BFU-E was increased from 3.1 +/- 1.8 times to 9. 2 +/- 2.3 times with angiotensin II in the presence of SCF+EPO+TPO+IL-3. In the semi-solid medium, angiotensin II could stimulate CFU-GM expansion but had no effect on the growth of BFU-E. In conclusion, angiotensin II had some stimulating effects on cord blood hematopoietic progenitors expansion in vitro in the presence of other cytokines.
Angiotensin II/*pharmacology ; Antigens, CD34/*metabolism ; Cells, Cultured ; Colony-Forming Units Assay ; Fetal Blood/*cytology ; Granulocyte-Macrophage Colony-Stimulating Factor ; Hematopoietic Stem Cells/*cytology

ObjectiveTo study the effect of three-level monitoring mode in reducing complications of pediatric PICC catheter tube and improving the quality of care for children. Methods64 cases of children with PICC catheter in our hospital from September 2009 to August 2011 receiving three-level monitoring modes were set as the experimental group.67 patients with conventional care from September 2007 to August 2009 were set as the control group.The incidence of catheter complications in children,success rate of catheter puncture and tube indwelling time for the two groups were observed. Results The complications occurred in 9 cases,accounting for 14.06％ in the experimental group.The complications occurred in 25 cases in the control group,accounting for 37.31％.The puncture success rate was 89.06％ in the experimental group,and the control group was 79.10％.The average time of tube indwelling in the experimental group was higher than the control group.The difference was significant. ConclusionsThe effect of three-level monitoring modes to reduce pediatric PICC catheter complications and improve quality of care in children with catheter is significant,it can increase the success rate of puncture and prolong tube in-dwelling time.

Huoxue Tongmai Lishui method, a traditional Chinese medicine treatment for eliminating water, activating and promoting blood circulation, could inhibit fundus hemorrhage on experimental retinal vein occlusion (RVO) with high obvious effective rate, and improve symptoms in traditional Chinese medicine. The action mechanism may be related to reducing plasma viscosity and non-perfusion area, and the formation of collateral circulation.

Objective To investigate the mechanism of tazarotene in active psoriasis vulgaris. Methods HB-EGF mRNA in active psoriatic lesions before and 10 days after the treatment with tazarotene was detected by hybridization in situ. Results There was nearly no expression of HB-EGF mRNA in psoriatic lesions (9.1%); after the treatment with tazarotene, there was expression of HB-EGF not only in basal layer (95.5%), but also focal expression in suprabasal layers of epidermis (77.3%). Conclusion Tazarotene can inhibit proliferation and induce apoptosis of keratinocytes though upregulating expression of HB-EGF in psoriatic epidermis.

Objective To investigate the feasibility of high fat-introduced hyperlipeidemia model in male SD rat and study the time rule of molding .Methods 30 Male adult rats of SD Strain bred in the animal house of the institute were divided into 3 groups after 1 week adaptation , group 1:control group, normal diet;group 2:model 1 group, high fat high cholesterol diet;group 3:model 2 group, high fat high cholesterol diet .The period of experiment was 8 weeks.Food and water intake were measured everyday and body weight were measured every four days .Blood were collected by orbital venous at the end of fourth ,sixth,eighth week to test their serum lipid level .At the end of experiment ,animals were killed to collect liver and aorta tissue for HE stain .Results Compared with control group ,the food intake of model 1 was higher and model 2 was significant lower , water intake of model 2 was significant lower , the ratio of liver/weight of two model groups were significant heavier ,and weight of model groups were higher .High fat diet significantly increased TC levels of model groups at the end of fourth ,sixth week.The level of LDL-c in model 1 group were higher and the HDL-c were lower compared with control group .HE stain showed the livers of control group were regular ,arrangements of the liver cells were trim, dyeing present uniformity .The two model groups showed a large range of hepatocyte fatty change ,a few liver blood sinus were in congestion and infiltrated with inflammatory cells .Aorta HE stain showed no significant change among 3 groups.Conclusions The method of high fat-introduced hyperlipeidemia model in male SD rat is feasible and the model turned out to present hypercholesterolemia with severe fatty liver .On the other hand,levers of serum lipid increased within an increase—inter-adjustment—increase state .In the process of modeling ,how to overcome the symptom of anorexia and the state of cholesterol inter-adjustment in animals is the key to successfully establish hyperlipeidemia model .