Objective:To confirm the least practice times to eliminate the practice effect in the Working Memory Test. Methods: Four university students aged 19 to 24 were selected and tested at 8:30～11:30 A.M., 2:30～5:30 P.M. and 7:30～9:30 P.M. respectively in two days, and their behavioral data were collected. Results: From the data of the four analyzed subjects, there are significant practice effects in the Working Memory Test (two types, three difficult levels), comparing with their practice results fore-and-aft, the difference of practice results reaches the significant level ( P

ObjectiveTo validate the judgment criteria of the validity scale for the assessment system on the character and temperament approach of command officers,and to describe the theory of this scale.MethodsUsing the way of imitating and field testing,correction of the criteria was verdicted based on the binary distribution theory.Results ①According the imitating research,about the 22 pairs of couple-items,the correct ratio,which is completely based on guessing,is about 4.9％,not reach 5％.②According the field testing,about the 22 pairs of couple-items,the correct ratio,which is completely based on guessing,is about 7.6％,not reach 8％.ConclusionOn the basis of theory analyzing,imitating research and field testing,not only can find the couple-items scale has many good features,such as more various show,more excellent disguise,but also can affirm the criterion of 19,which is based on the binary distribution theory,is also appropriate.

Objective To investigate the influence of fast track surgery(FTS) on the concentrations of serum IL‐6 ,IL‐10 , and TNF‐αin pancreatic cancer patients ,and its clinical significance .Methods Eighty patients undergoing pancreatic cancer opera‐tion were divided into FTS nursing group and traditional nursing group .The concentrations of serum IL‐6 ,IL‐10 ,and TNF‐αin dif‐ferent times before and after operation ,and the same period between groups were measured .Results (1)The concentrations of ser‐um IL‐6 ,IL‐10 ,and TNF‐αwere no significantly difference in two groups before operation(P>0 .05);the concentrations of serum IL‐6 in the first and third postoperative day were higher than those before operation in the observation group (P<0 .05);there was no significant difference of the concentrations of serum IL‐6 between the fifth postoperative day and before operation(P>0 .05);the concentrations of serum IL‐6 after operation were higher than those before operation in the control group(P<0 .05);the concentra‐tions of serum IL‐6 in the same time after operation in the observation group were lower than those in the control group(P<0 .05);(2)The concentrations of serum IL‐10 in the first ,third and fifth postoperative day were higher than those before operation in the observation group(P<0 .05);the concentrations of serum IL‐10 in the first and third postoperative day were higher than those be‐fore operation in the control group(P<0 .05);the concentrations of serum IL‐10 in the same time after operation in the observation group were higher than those in the control group(P<0 .05);(3)The concentrations of serum TNF‐αin the first postoperative day were higher than those before operation in the observation group(P<0 .05);there was no significant difference of the concentra‐tions of serum TNF‐αbetween the third and fifth postoperative day and before operation(P>0 .05);the concentrations of serum TNF‐αin the first and third postoperative day were higher than those before operation in the control group(P<0 .05);there was no significant difference of the concentrations of serum TNF‐αbetween the fifth postoperative day and before operation in the control group(P>0 .05);the concentrations of serum TNF‐α in the first and third postoperative day in the observation were lower than those in the control group(P<0 .05) .Conclusion FTS could significantly reduce inflammatory reaction ,improve immunosuppres‐sion and helps to recover .

BACKGROUND: Previous research has investigated the effect of nano-zirconium dioxide-toughened hydroxyapatite (nano-ZrO2-HA) on the proliferation and differentiation of rabbit bone marrow stromal cells.OBJECTIVE: To evaluate the biocompatibility of nano-ZrO_2-HA compound.METHODS: The experiments of acute toxicity,subacute toxicity,pyrogen,hemolysis,and intramuscular implantation were performed on New Zealand rabbits,healthy adult Kunming mice,and adult rats according to "Technical Evaluation Standards of Biomedical Materials and Medical Instruments",promulgated by Chinese Board of Health.RESULTS AND CONCLUSION: Acute toxicity: All experimental animals survived.There was no significant difference in body mass before and after testing (P> 0.05).Pyrogen: Heating reaction was not tested.Hemolysis: Generally speaking,hemolytic crisis was not observed after 1 hour,and hemolytic rate was less than 5%.Intramuscular implantation: Infection did not occur in any animals,and materials were not discharged at all.Four weeks later,muscles were closely integrated with materials.A certain quantity of tissue grew into material pore,and peripheral muscle still had normal morphology and structure.Subacute toxicity:There was no significant difference in body mass and blood routine before and 2 weeks after testing.HE staining demonstrated that necrotic focus and other lesion were not observed in heart,liver,and kidney tissues under optic microscope.The results suggested that nano-ZrO_2-HA was non-toxicity,and it had no pyrogen and hemolysis effect,as well as it did not stimulate to the muscle of rabbit.Inflammatory rejection did not happen to the animal.The nano-ZrO_2-HA was closely integrated with the muscle,characterizing by great biocompatibility.Therefore,it can be used as substitution materials in clinical experiment.But it still needs to be evaluated completely.

Objective The purpose of this study is to construct eukaryotic gene vector of herpes simplex virus type 1 thymidine kinase(HSV1-tk)and to observe the expression of HSV1-tk in lung adenocarcinoma AGZY cell line.Methods The full length HSV1-tk gene was amplified by PCR from plasmid pHSV 106 and was inserted into pMD18-T.The recombinant plasmid was recombined with eukaryotic vector plRES 2-EGFP u-sing gene recombinant technique .HSV1 -tk was transfected into adenocarcinoma AGZY cell line with Lipo-fectamineTM 2 000.Fluorescence microscopy was used to detect the transfection and expression of HSV 1-tk.RT-PCR was used to detect the mRNA levels of HSV 1-tk.The cell proliferation was measured by MTT assay .Re-sults A length of 1 130 bp gene sequence was obtained by PCR .The expressions of HSV 1-tk at mRNA and protein levels were displayed by RT -PCR and Western blot .MTT analysis showed that there were no significant changes cell survival on after transfection .Conclusion The eukaryotic expression vector of HSV 1 -tk report gene is successfully constructed and HSV 1-tk is effectively expressed in transfected AGZY cells .

Decades researches of molecular oncology have found some moleculars which can promote tumor growth and help cancer surrive.This brings new hope for the treatment of tumors.Epidermal growth factor receptor (EGFR) is the first important molecular to inhibit tumor growth.Fifty percent triple negative breast cancer (TNBC) and inflammatory breast cancer (IBC) overexpress EGFR.EGFR and its downstream pathway can regulate epithelial-mesenchymal transition,promote tumor cell migration.EGFR therapy can improve the chemosensitivity of TNBC cells,apoptotic signal transduction occur.These studies suggest that the EGFR targeted therapy may have an important role in the treatment of TNBC and IBC.

Objective To evaluate the clinical efficacy of percutaneous endoscopic lumbar discectomy (PELD) on treatment of far lateral lumbar disc herniation (FLDH). Methods We retrospectively analyzed 27 patients with FLDH underwent percutaneous endoscopic lumbar discectomy from June 2014 to September 2015, age from 41 to 64, average 52.3. The average operation time, intraoperative blood loss and length of hospital stay were collected. The lumbocrural pain perception of patients before and after surgery was assessed by visual analog scale (VAS) and postoperative lumbar functional recovery after surgery by modified MacNab criteria. Results Average operation time was 69 min (58~109 min), intraoperative blood loss was 18 ml (11~40 ml), and length of stay was 5.0 d (3.0 ~ 10.0 d). VAS score from (8.12 ± 1.25) preoperatively improved to (2.80 ± 1.12) at the 3rd d after operation, (1.59 ± 1.06) at 3 months after operation, and (1.31 ± 0.89) at the last follow-up after operation; There was a statistical difference between preoperative scores and postoperative scores (P < 0.05). Modified MacNab criteria was a ratio of 88.9%. Conclusions PELD on the treatment of far lateral lumbar disc herniation have small area of trauma, faster postoperative recovering and several other advantages,which is a safe and effective minimally invasive surgery.

Ovarian cancer is the second deadliest gynecological malignancy around the world. The survival rate is closely related to the tumor stage and treatment. Radionuclide imaging, as a functional imaging at the molecular level, can provide a non-invasive method for in-depth understanding of pathophysiological process, which is important for the diagnosis and treatment of ovarian cancer. Nuclear imaging of malignant tumors has become a hot and important research topic in basic and clinical research. This review summarizes the current process in nuclear imaging of ovarian cancer, including glucose metabolism, cell proliferation, cellular receptors/proteins, and immune molecule imaging.