Ninety fresh umbilical cords of newborns were harvested and dissected. There were 86 cords with double arteries and single vein and 4 cords with only 1 artery and 1 vein. The outer and inner perimeter of single artery, double arteries and the vein was 3 8?0 3mm vs 6 2?0 3mm, 2 4?0 2mm vs 4 6?0 2mm and 10 0?0 4mm vs 10 8?0 4mm at empty and flatened state, respectively. The diameter of vein at 20mmHg filling pressure and single and double arteries at 80mmHg was 7 2?0 3mm, 4 8?0 1mm and 3 9?0 8mm, respectively. According to these values, various drainage and perfusion metal tubes were designed and evaluated both in vitro and in vivo. By using these tubes,extracorporeal circulation was established successfully via umbilical artery and vein in a newborn who suffered from cardiac arrest after birth. The results suggest that CPB through umbilical artery and vein is simple, practical and effective.

Objective To investigate the correlations between the level of blood lactic acid (Lac),lactate clearance rate (LCR) and emergency stratification Ⅰ or Ⅱ as well as the prognosis in patients.Methods A retrospective analysis was conducted.The clinical data of 370 critically ill patients with emergency stratification Ⅰ or Ⅱ accompanying with hyperlactacidemia admitted to emergency center of People's Hospital of Wuwei City during January 2013 to April 2015 were analyzed.The patients were allocated into two groups:Lac ≥ 10 mmol/L (n =181) and Lac 4-10 mmol/L (n =189).Base excess (BE),acute physiology and chronic health evaluation Ⅱ (APACHE Ⅱ) score and hospital mortality were compared between the two groups.The differences in initial Lac,6-hour LCR and APACHE Ⅱ score were compared between survival group and death group as well as emergency stratification Ⅰ and Ⅱ groups.The correlation between initial Lac,6-hour LCR and APACHE]Ⅱ score was analyzed by Pearson correlation method.Results ① With the increase in Lac level,the negative deviation extent of BE and APACHE Ⅱ score in critical patients were gradually increased [BE (mmol/L):-16.74 ± 8.21 vs.-5.98 ± 8.43,APACHE Ⅱ score:27.6 ± 5.6 vs.20.1 ± 4.8],and hospital mortality was increased [76.79％ (139/181) vs.43.39％ (82/189),all P ＜ 0.01].② The initial Lac and APACHE Ⅱ score of the death group were significantly higher than those of the survival group [initial Lac (mmol/L):8.81 ± 4.71 vs.4.43 ± 2.82,APACHE Ⅱ score:23.6 ± 5.6 vs.17.3 ± 3.7],and 6-hour LCR was significantly decreased [(12.26 ± 6.47)％ vs.(35.16± 10.63)％,all P ＜ 0.01].③ Patients in emergency stratification Ⅰ group had a higher initial Lac and a higher APACHE Ⅱ score but a lower 6-hour LCR level than those in emergency stratification Ⅱ group [initial Lac (mmol/L):8.7±2.6 vs.6.8±2.0,APACHE Ⅱ score:25.2±6.3 vs.16.3±4.7,6-hour LCR:(14.8±4.7)％ vs.(33.5±5.8)％,both P ＜ 0.01].④ It was shown by correlation analysis that initial Lac was significantly positively correlated with APACHE Ⅱ score (r =0.731,P =0.017) in 370 emergency critical ill patients,while 6-hour LCR was negatively correlated with APACHE Ⅱ score (r =-0.694,P =0.010).Conclusions The early arterial blood Lac of patients with emergency stratification Ⅰ was significantly higher than emergency stratification Ⅱ,and the 6-hour LCR in patients with emergency stratification Ⅱ was significantly higher than emergency stratification Ⅰ.Furthermore,the Lac level and LCR were simple and easy to implement as compared with APACHE Ⅱ score in emergency critical ill patients.

Objective: To investigate the vaccine potency of GM-CSF anchored B16 tumor cells. Methods: In this study, mGM-CSF was expressed on surface of B16 mice melanoma cells by GPI-modifying. C57BL/6 mice were inoculated with GM-CSF anchored cells and wide-type B16 cells to evaluate whether the GM-CSF anchored cells could elicit a protective and systemtic antitumor response. Results: GM-CSF anchored cells resulted in remarkable loss of tumorgenicity in syngenetic mice. The tumor occurrence rate of GM-CSF anchored B16 cells was 58. 8% on C57BL/6 mice with 1 ? 106 B16 cells/mice inoculated ( n = 12) and that of wide-type B16 cells was 100% , The C57BL/6 mice receiving inoculation with 5 ? 105GM-CSF anchored cells/mice never grew tumor. These mice were challenged with wide-type B16 cells, and only a minority of mice grew tumor after wide-type B16 cells inoculation. Conclusion:GM-CSF protein anchored cells could elicit a protective and systemtic antitumor responses.

Objective:To evaluate the surgical corrective results of maxillary hypoplasia in patients with cleft lip and palate withtranspalatal modified Le Fort Ⅰ osteotomy.Methods:In the study,1 1 patients (4 women,and 7 men)with maxillary hypoplasia secondary to cleft lip and palate underwent transpalatal modified Le Fort Ⅰ osteotomy at Peking University School of Stomatology from Jan.201 2 to Dec.201 3, with the mean age of 21 years (from 1 8 to 27 years),Bilateral sagittal split ramus osteotomy (BSSRO) and genioplasty were performed simultaneously in 9 of them for better appearance and functional occlu-sion.Lateral cephalometric radiographs were taken and traced before surgery,immediately after surgery and 6 months after surgery.The position of subspinale (A)on horizontal direction,the angle of sella-na-sion-subsipmale (SNA)and the angle of sella-nasion-supramental (SNB)were collected and analyzed to evaluate the results.Results:All the patients were uneventful with transpalatal modified Le Fort Ⅰosteotomy.All of them had a better profile and a satisfactory occlusionafter operation.The position of A was moved forward (6.6 ±1 .1 )mm on average in horizontal direction when surgery was completed,and maintained (6.0 ±1 .2)mm on average 6 months after surgery.The average of SNA was 75.9°±2.8° before surgery,81 .6°±8.6°immediately after surgery,and maintained 81 .0°±2.6°6 months after sur-gery.The average of SNB was 82.6°±3.7°before surgery,78.0°±2.4°immediately after surgery,and maintained 78.5°±2.4°6 months after surgery.Conclusion:The maxillary hypoplasia in cleft lip and palate patients can be successfully corrected with transpalatal modified Le Fort Ⅰ osteotomy and the func-tional occlusion can be achieved simultaneously.The effect of deformity correction was satisfactory. Transpalatal modified Le Fort Ⅰ osteotomy can move maxilla more sufficiently,especially applicable for the patient with severe palatal scars preoperatively.

Objective To measure the displacement of the silver clips guided by kV-plain film at state of moderate deep inspiration hold(mDIBH) assisted by active breathing control(ABC) and to explore the margin of clinical target volume(CTV) to planning target volume(PTV) for breast cancer patients treated with three-dimensional conformal external-beam partial breast irradiation (EB-PBI) assisted by ABC. Methods The patients undertook CT simulation assisted by ABC to get the CT images on the respiratory condition of mDIBH. Four selected silver clips in breast cavity were delineated and the cavity based on all of the clips were delineated as gross tumor volume (GTV). Before each irradiation, two orthogonal kV-plain films were taken for the patients in the respiratory condition of mDIBH assisted by ABC device. 2D-2D auto-matie registration was performed based on pixel between the kV-plain films and the digital reconstructed radi-ographs(DRR). Then manual registration was undertook to get the shifts of the four clips separately at LAT, LNG,and VRT directions. Based on the shift data,the margins of CTV to PTV at LAT,LNG and VRT direc-tions were calculated. Results The margins from CTV to PTV were 5.00 mm,7.78 mm and 9.30 mm at LAT,LNG and VRT directions based on the clip at cephal border of the cavity. The corresponding margins were 4.40 mm,6.43 mm and 6.73 mm based on the clip at bottom of the cavity;5.04 mm,8.63 mm and 10.54 mm based on the clip at lateral border of the cavity;5.40 mm,8.59 ram and 10.81 mm based on the clip at pedal border of the cavity. Conclusions The silver clips in breast cavity can be clearly showed on the kV-plain film. The displacement of the clips can be exactly measured by registration of kV-plain film and planning DRR in condition of mDIBH assisted by ABC. The margins from CTV to PTV for EB-PBI can be calculated based on the displacement of the clips.

The Bcl-2 family of proteins play a central role in the control of apoptosis, a fundamental process for both human health and disease, by mitochondrial pathway. PUMA(p53 up-regulated modulator of apoptosis protein) is one of BH3-only members of Bcl-2 family , its function is to promote cell apoptosis. To obtain BH3 death domain peptide of PUMA and detect its biological activity, the synthesized double-stranded oligomeric nucleotide encoding PUMA-BH3 peptide was cloned into expression vector pTYB2,thus generating a construct of pTYB2-PUMA-BH3 which expressed PUMA-BH3-intein-chitin binding domain fusion protein. Then the recombinant plasmid was transformed into E.coli BL-21 (DE3) and fusion protein was expressed under induction by IPTG. The soluble PUMA-BH3 peptide was purified from chitin affinity chromatography by DTT reduction. Through measuring mitochondria viability(MTT),mitochondria permeability transition(MPT) and the translocation of cytochrome c(Cyt c ) assayed by western blotting, the biological pro-apoptotic activity of PUMA-BH3 peptide was studied. The PUMA-BH3 peptide has the effects on decreasing the mitochondria viability remarkably , inducing mitochondrial swelling and promoting Cyt c releasing from isolated mitochodria . Mitochondrial swelling and the release of Cyt c induced by PUMA-BH3 peptide concerned with the opening of MPT,which can be improved by cyclosporine A(CsA).These results indicated that recombinant PUMA-BH3 peptide might possess pro-apoptosis activity and paved a reasonable way for the study of new apoptosis regulators.

A systematic review was undertaken, including studies that evaluated the incidence of the blood system adverse events of Tripterygium wilfordii (TWP). Medline, Embase and the Cochrane library were searched for relevant studies, including RCT, cohort studies and case series, of patients treated with TWP published in English and Chinese from inception up until May 25th, 2013 with the keywords including "Tripterygium wilfordii", "toxicity", "reproductive", "side effect", "adverse", "safety" and "tolerability". Relevant information was extracted and the incidence of the blood system adverse events was pooled with MetaAnalyst software. Besides, subgroup and sensitivity analyses were performed based on age, mode of medicine, observation time and disease system. According to inclusion and exclusion criteria, a total of 49 articles were included in the meta-analysis, they were split into 54 researches incorporated in the analysis. There is a large degree of heterogeneity among the studies, so data was analyzed using random-effects model and the summary estimates of incidence of the blood system adverse events was 6.1%. The weighted combined incidence of three major blood system adverse events were white-blood cells decreasing 5.6% (95% CI, 4.3% - 7.3%), hemoglobin decreasing 1.7% (95% CI, 0.5% - 5.0%) and platelet decreasing 1.8% (95% CI, 1.0% - 3.1%), respectively . Sensitivity analyses based on 45 studies with high quality showed the combined value was close to the summary estimate of total 54 studies. The current evidence indicates that the incidence of the blood system adverse events induced by TWP was high; attentions should be paid on to the prevention and treatment of the blood system adverse events.
Blood Cells ; drug effects ; Hemoglobins ; analysis ; Humans ; Tripterygium ; adverse effects

Aim To synthesize and identify artificial antigen of podophyllotoxin for the production of podophyllotoxin polyclonal antibody. Methods The hapten was synthesized by two different chemical approaches and characterized by TLC, IR, NMR, and MS. Mixed anhydride reaction (MAR) and active ester method (AEM) were used to couple the podophyllotoxin to carrier proteins (BSA and OVA). Characterization of artificial antigens was done by using spectroscopy and electrophoresis. The anti-podophyllotoxin polyclonal antibodies were obtained through immunizing rabbits. Results The results from IR, NMR and MS showed that 4-O-succinoyl podophyllotoxin (hapten) was successfully synthesized. The coupling molar ratios of the hapten and carrier proteins were 88.6 for Hapten-BSA1, 40.3 for Hapten-BSA2, 17.8 for Hapten-OVA1, and 54.2 for Hapten-OVA2. Hapten conjugates coupled with BSA yielded two sets of the specific and affinitive polyclonal antibodies. One set of antibodies showed an IC50 value of 2.21 μg·mL -1 with a detection limit of 0.12 μg·mL -1. Conclusion Antigenic conjugates were artificially synthesized, and based on these artificial antigens, polyclonal antibodies against podophyllotoxin were raised from rabbits immunized with two different immunogens and characterized with an indirect ELISA format.

Background There is no effective method to regenerate the optic nerve after injury. It has been recently reported that α-crystallin could promote the survive rate and axon regeneration of retinal ganglion cells (RGCs) effectively. However,the molecular mechanism is not clear. Objective This study was to identify the site of RGCs where the exogenous α-crystallin bind to. Methods RGCs was isolated from retinas of two 2-day-old Long Evans rats and primarily cultured. The positive rate of the RGCs was assessed by counting the number of positive cells for fluorescently-labeled thy1. 1 and cy3 under the fluorescence microscope. The biotinylated exogenous α-crystallin was evaluated by direct coloration and the activity of molecular chaperones was measured by insulin test.After identifying the success of biotinylation along with the activity of molecular chaperones,biotinylated α-crystallin was co-incubated with RGCs and the cells then were reacted to fluorescently labeled avidin for the observation of binding site of exogenous α-crystallin under the laser confocal microscope. Results RGCs of 94% were survived through primary culture. The coloration of biotinylated α-crystallin labeled by the direct coloration method was more intensive, and the value of A450 descended as the decrease of biotinylated α-crystallin concentration,indicating that the α-crystallin was biotinylated successfully. The activity of molecular chaperones of biotinylated α-crystallin was significantly strong but no significant change after being biotinylated after co-incubation of RGCs with biotinylated α-crystallin. Laser confocal microscope examination revealed that co-incubated RGCs with biotinylated α-crystallin showed the red fluorescence on membrane and axon of RGCs rather than cytoplasm and nucleus. The absent response was seen in the control group. Conclusion Exogenous α-crystallin can specifically combine with the membrane of RGCs to play the biological function,but its binding mode and mechanism need further study.

Objective To establish an simple and convenient animal model of cardiac arrest for studying cerebral resuscitation.Method Clean male Sprague Dawley rats were randomly divided into sham group and experimental group.Cardiac arrest was induced by asphyxiation and ice-cold 0.5 mol KCl with blood flow cut off for 5 minutes.Animals were resuscitated with external cardiopulmonary resuscitation (CPR),mechanical ventilation,and epinephrine injection.Blood pressure,heart rate,successful ratio of resuscitation after 72 hours, time of cardiac arrest (T_(CA)) and return of spontaneous circulation (T_(ROSC)) were recorded.Neural deficit scores (NDS) and levels of maleic dialdehyde (MDA) in plasma were evaluated at 3,6,12,24,48,72 hours after ROSC.The damage score of cortex was measured by transmission electron microscope examination at 3 hours and 72 hours after ROSC.Results All the rats in experimental group had cardiac arrest rapidly.T_(CA) and T_(ROSC) were (137.3?10.2) seconds and (64.4?9.3) seconds,respectively,while the successful rate of resuscitation was 82.5%.The lowest NDS was at 3 hours after ROSC,while the NDS increased gradually.After CPR,the level of MDA in plasma increased significantly,slightly declined at 72 hours after ROSC,but still significantly higher than before the model.Electron microscope examination of cortex showed neuron slightly,organelle and astrocyte,but became better after 72 hours post ROSC.Conclusions The model of cardiac arrest was easy to establish,and the data provided was accurate,which is useful to study the mechanism of cerebral resuscitation.