Two highly specific monoclonal antibodies with potentul affinity against hepatocellular carcinoma HAb18, HAb25 as carriers, 131I and adriamycin (ADM) as warhead "double bomb"-mixed monoclonal antibodies immunoconjugates(131I-HAb18-ADM)/(131I-HAb25-ADM) was prepared by indirectly conjugated with dextran T-40 and chloramine-T methods. The immunoconjugating rate to target cells was 42.5%, labelling rate 49.8%, and specific radioactivity 6.88?104Bq/?g. In vitro, (131I-HAb18-ADM)/(131I-HAb25-ADM) showed stronger selective cytotoxicity against target tumor cells than either HAb18-ADM, or 131I-HAb18, or HAb25-ADM, or 131I-HAb25 conjugate alone(P

Objective To study the effects of using jaw tracking technique with Smart LMC algorithm on the absorbing dose of planning target volume (PTV) and organs at risk (OARs) in dynamic intensity-modulated radiation therapy (IMRT) for nasopharyngeal carcinoma (NPC).Methods Field fluencies of 10 cases of NPC patients were optimized using DVO algorithm on Eclipse TPS (11.0),and according to the same optimal fluence,MLC operation files were calculated using jaw tracking technique and jaw fixing technique respectively,dose distribution was calculated with AAA algorithm and jaw tracking IMRT plan (JT-IMRT) and jaw fixing IMRT plan (JF-IMRT) were generated respectively.Collimators' position at the plan implementation was observed,and the total number of plans' monitor units (MU),the dose of PTV,the absorb dose of OARs,and the actual fluence verification pass rate were compared.Results The collimators' opening gap distances in 166 control points of the JT-IMRT reduced in both X and Y directions in the field,compared to that of the JF-IMRT.Total number of the JT-IMRT's MU increased by 3.59％-11.63％.There was no statistical significant difference between the doses of the PTV.Statistical significance was found in the differences between maximum dose (Dmax) of brainstem,spinal cord,crystal,optic nerve,the mean dose (Dmean) and D50％ of parotid and their decreased values after therapy (t=5.70-8.66,P＜0.05).The actual fluence verification pass rate of the JT-IMRT was higher than that of the JF-IMRT.There was a significant difference between the results (t=5.18,P＜0.05).Conclusions The JT-IMRT plan of the smart LMC algorithm is more tolerant to the radiation leakage between inter-and intra-leaf.The dose of OARs is lower,while the dose calculation precision and the verification pass rate are higher,the actual radiation dose is more accurate and reliable.Therefore it is more suitable for clinical applications.

Objective To explore the possibility of anal preserving after total mesorectal excision combined with stapling technique in radical resection of low rectal cancers. Methods We retrospectively summarized the data of 93 cases of low rectal cancer treated by radical resection and anal preservation, and made specific assessment of post operative rectal sensation and anal function. Results All of the cases were free of cancer invasion of the distal margin of resected bowel.The rate of local recurrence at 2 years after operation was 5.3 %, and 93.5% of patients had good rectal sensation and anal function. Conclusions Anal preserving operation for low rectal cancers using total mesorectal excision combined with stepling technique can improve the postoperative quality of life, and is safe and feasible.

Background and purpose:Ovarian cancer is one of three common malignant tumors in the female reproductive system,whose mortality is the highest in all of the gynecological cancers.The genetic instability and hypermutation rate of tumor cells were found to be associated with chemotherapeutic resistance,and accounted for the high recurrence rate and the failure of current treatment.Invasion and metastasis of tumor are closely related to angiogenesis.Experiments in vivo and in vitro have confirmed that there are many kinds of promoter and suppressor of angiogenesis in primary malignant tumor cells.Angiogenesis could be a potential molecular target for cancer treatment.Endostatin is a specific inhibitor of vessel endothelium.Animal experiments have confirmed that Endostatin could inhibit tumor growth through anti-angiogenesis and result in the decrease of invasion and metastasis of cancer,and it would not easily induced drug resistance in the cells.Thus Endostatin could be safely used for a variety of cancer treatments,being able treat any patho-angiogensis.Recently it has been reported that Endostatin may significantly enhance anti-tumor effects when it is combined with traditional treatment methods such as surgery,chemotherapy,radiotherapy and immunotherapy.Although the study of Endostatin was done in vitro,the primary results were very encouraging and provide the rationale for future clinical trials.In this study,we aim to evaluate the inhibitory effect of Endostatin on SKOV_(3) cell and to investigate the possible mechanism of the inhibition.Methods:1.The effects of Endostatin on SKOV_(3) cells proliferation was studied by means!of MTT.2.The cell apoptosis and cell cycle were detected by transmission electron microscope and cell flow cytometry.3.bcl-2 and bax expression were determined in SKOV_(3) cell by immunocytochemistry,RT-PCR and Western blot analysis.Results:Endostatin inhibited SKOV_(3) cell proliferation,and the value of A_(490) of 15?g/ml 72 h Endostation group(0.454) was much lower than that of PBS control group(1.369)(P

BACKGROUND:Anterior cervical discectomy and fusion surgery is a good choice for repair of degenerative cervical disc herniation, but it is reported that fusion can affect the exercise of cervical neighboring stages. Artificial disc replacement can not only play a role in mitigation of cervical disease neurological symptoms and signs, but also maintain stability and semental activity of cervical spine, and reduce secondary adjacent segmental degeneration.
These two methods which applied in cervical degenerative intervertebral disc herniation stil remain controversial. OBJECTIVE:To investigate the short-term effect of artificial cervical disc replacement and anterior cervical decompression and fusion for the treatment of single segmental cervical disc herniation. METHODS:Total y 48 patients with single segment radiculopathy or myelopathy cervical diseases induced by cervical disc herniation that required surgery and received a three-month fol ow-up were included and retrospectively analyzed. These patients were divided into replacement group (n=21) and fusion group (n=27) according to the different repair programs. Patients in the replacement group were subjected to Prestige LP cervical artificial disc replacement, and patients in the fusion group were subjected to disc fusion using interbody fusion cage of Johnson or al ogeneic fibularing. They were fol owed up at 1 week, 3, 6, 12, 24, 36 months after treatment. Complications were recorded during the fol ow-up. The pain of patients was evaluated using neck and upper limb pain visual analogue scale scores. The therapeutic effect was evaluated using Japanese Orthopaedic Association (JOA) score. The clinical symptoms improvement and daily functional status of patients after treatment were evaluated using cervical disability index. RESULTS AND CONCLUSION:During the final fol ow-up, the fusion rate in fusion group was 93%(25/27). Comparisons between groups:at the 1 week and final fol ow-up after treatment, the visual analog scale scores of neck and upper limbs and cervical dysfunction indexes were al lower than those before treatment;the Japanese Orthopaedic Association scores were higher than those before treatment (P<0.05). In the final fol ow-up, the visual analog scale scores of neck and upper limbs and cervical dysfunction index were al lower than those after one week of treatment, and the Japanese Orthopaedic Association scores were higher than those after one week of treatment (P<0.05). There were no significant differences in the above indicators at each time point between these two groups (P>0.05). The cervical activity and surgical segmental motion after cervical disc replacement were significantly higher than those in the fusion group;the difference was statistical y significant (P<0.05). There were no serious complications in these two groups. There was no significant difference in the incidence of complications between these two groups (P>0.05). These results suggest that the artificial cervical disc replacement and anterior cervical decompression and fusion for the treatment of single cervical disc herniation have the same effect in terms of patients’ symptoms mitigation. With respect to fusion technique, artificial disc replacement surgery has the advantage of maintaining cervical stability and activities of replacement segments.

OBJECTIVE:To observe the correlation of vitamin D with the incidence of cardiovascular disease and risk factors in elderly patients with type 2 diabetes mellitus. METHODS:94 patients,aged 60 years old above,with type 2 diabetes mellitus were collected retrospectively. Those patients were divided into diabetes group(41 cases)and diabetes complicated with cardiovas-cular disease group(53 cases)according to the condition of disease. 25(OH)D levels and lab indicators of 2 groups were detect-ed. The relationship of cardiovascular lesion with risk factor was analyzed by Multivariate Logistic regression;the correlation be-tween 25(OH)D and risk factors was analyzed by pearson analysis. RESULTS:There was statistical significance in the levels of 25 (OH)D,TC,TG,UA and Ca between diabetes group and diabetes complicated with cardiovascular disease group,with statistical significance(P<0.05). pearson analysis showed that the level of 25(OH)D was negatively related to age,FIB,TC and UA,and positively related to D-dimer and HDL-C,especially correlated with FIB and TC significantly,with statistical significance (P<0.01). Multivariate Logistic regression analysis showed that the deficiency of 25(OH)D was pathogenic factors of type 2 diabetes mellitus. CONCLUSIONS:There is a correlation between the level of 25(OH)D and cardiovascular risk factors as age,FIB,TC, UA,D-dimer,HDL-C. Vitamin D deficiency is the independent risk factors for cardiovascular disease in elderly patients with type 2 diabetes mellitus.

OBJECTIVETo explore clinical results of open reduction and internal fixation (ORIF) for posterior Pilon fracture through posterolateral approach.

METHODSSeventeen patients with posterior Pilon fracture were treated through posterolateral approach from February 2010 to April 2013. Among them,including 11 males and 6 females aged from 29 to 59 with an average of 43.4 years old. All fractures were associated with more than 20% of articular surface of distal tibial. The causes of injury included falling down (11 cases), traffic accident (4 cases) and sports injury(6 cases). Fracture classification was based on posterior pilon fracture by YU Guang-rong, including type I (6 cases), type II (2 cases) and type III (6 cases). Fracture healing time, fracture reduction and postoperative complications were observed, AOFAS score were applied to evaluate clinical efficacy.

RESULTSAll patients were followed up from 13 to 24 months with an average of 20.5 months. All incisions were healed at stage I, and fractures obtained healing,the time of fracture healing ranged from 12 to 21 weeks with an average of 15.2 weeks. No incision infection, neurovascular injury, bone ununion and fracture deformity were found after operation. Postoperative AOFAS score was 92.0 ± 10.2, and 14 cases got excellent results, 2 good and 1 moderate.

CONCLUSIONPosterior pilon fracture through posterolateral approach could obtain effective reduction, stable fixation. It is a safe, simple and effective operation for treating posterior Pilon fracture, and it is worth popularizing.

Adult ; Ankle Fractures ; surgery ; Ankle Joint ; surgery ; Female ; Fracture Fixation, Internal ; Humans ; Male ; Middle Aged ; Tibial Fractures ; surgery

English training is important for young doctors＇ career development in general hospital.The stagewise English training mode of Beijing Tiantan Hospital of Capital Medical University was introduced.By summarizing the experience of five years trial,viewpoints were brought forward that hospital English training in radiological department of general hospital should adopt a stagewise mode,create an English communication atmosphere,show the special feature of department and combine with clinical daily work.

Objective To explore the relationship between genetic variation in PAF-AH V279F and coronary heart disease among Han population in Beijing.Methods A case-control study was held which enrolled 124 patients with coronary heart disease and 103 normal subjects.The genotype of PAF-AH V279F was determined with allele-specific polymerase chain reaction(AS-PCR)method. Results The highest frequency of PAF-AH V279F genetic variation was VV genotype(92.2%),the next was VF genotype(5.8%)and the lowest was FF genotype(2.0%)among the studied Han population in Beijing.In the coronary heart disease group the frequency of 279 V→F carriers was significantly higher than in the control group(19.3% vs.7.8%,P＜0.05)and F allele frequency was also higher(12.1% vs.4.9%,P＜0.01).Among the coronary heart disease group,the V279F variation frequency and the F allele frequency were significantly higher in patients with myocardial infarction than in those without myocardial infarction(27.3% vs.13.0%,17.3% vs.8.0%,both P＜0.05).In multiple logistic regression analysis,the odds ratio(OR)of V279F genetic variation for coronary heart disease was 1.919(95% CI:1.448-2.544,P=0.033).Conclusions The PAF-AH V279F genetic variation may be a novel genetic marker for high risk of coronary heart disease.

OBJECTIVE:To prepare Puerarin polymeric micelles and establish a method to determine its entrapment efficiency. METHODS:Puerarin polymeric micelles were prepared by film dispersion method. The polymeric micelles and free drug were sepa-rated by centrifugal-millipore filter filtration method. The entrapment efficiency of puerarin polymeric micelles was determined by HPLC. Diamonsil C18(2)column was used with 1% citric acid solution-methanol(65∶35)at the flow rate of 1 ml/min. The detec-tion wavelength was set at 250 nm,and column temperature was room temperature. RESULTS:The prepared polymeric micelles were spherical and spherical-like in shape with a mean particle size of 54.12 nm,polydispersity index of 0.122,Zeta potential of -13.60 mV;the linear range of puerarin was 2-10μg/ml(R2=0.999 4)with average recovery rate of 99.2%(RSD=0.9%,n=3). The re-covery rate of free drug was 95.3%(RSD=1.7%,n=3). The mean entrapment efficiency and drug-loading amount of puerarin were(35.5±2.12)% and(0.3±0.07)%,respectively(n=3). CONCLUSIONS:Film dispersion method is suitable for the prepara-tion of Puerarin polymeric micelles. Established method is convenient,accurate and reliable for the content and entrapment efficien-cy determination of Puerarin polymeric micelles.