Androgen receptors appear to play a significant role in the hepatocarcinogenesis.Androgen receptors are found to be expressed in liver tumor,and the overexpression of androgen receptor is associated with poor prognosis.Recent researches have indicated that androgen receptors regulate various cellular events in liver carcinogenesis through various ways,and androgen receptor could be a potential cancer therapeutic target in hepatocellular carcinoma.

After the arteries were injected with gelatin and ink, the arterial distribution and the vascular architecture of the elbow joint were observed in 20 fetal and 8 adult arms macroscopically and microscopically. The arteries of the elbow anastomose to form networks around the joint, from which many twigs supply the capusle and the intra-articular structures. In the capusle, the vessels make up a ladder-like mesh among the fibrous bundles. At the margin of the capusle, the vessels ramify to form a complex network, the circulus articuli vasculosus, between the fibrous and the synovial layers. The vessels from the circulus articuli vasculosus supply the synovial membrane, the synovial fold or the fat pad and the epiphysis or the epiphyseal cartilage. There are 2 to 4 layers of mesh in the synovial membrane of capusle, a glomerulus-like network in the synovial fold or the fat pad, many series of bow-shaped net in the synovial membrane on the surface of the neck of elbow bone. There is a central artery and a cage-like capillary network in the cartilage canal. The secondary center of ossification appears in the vascularized area of the cartilage. No intra-osseous intercommunications of the epiphyseal artery and nutritive artery exist in the epiphysis until the ossification of the epiphyseal plate.

?-Thalassemia is an inheritance anaemia disease due to the defect in?- globin gene. Gene therapy is considered to be the only method which could cure this disease. Adeno-associated virus type 2 (AAV2) has benn gaining more attention as a vector in human gene therapy for its non pathogenic character and broad host range. Although, the efficacy of recombinant AAV2 (rAAV2) in transducing human hematopoietic stem cells has been investigated by researchers, the results were varied from different laboratory. The view was proposed recently that it may be resulted from helper virus in their packaging system. Respecting this, the packaging system without helper virus was used to produce rAAV2. Human early fetal liver hematopoietic cells not only possess many superior peculiarity compared to hematopoietic cells of bone marrow or cord blood, but also the inherent?-globin gene in the cells is not expressed. Studies on the AAV2 transduction of human fetal liver hematopoietic cells and mediated expression of ?- globin gene in vivo were performed and the potential role of AAV2 in?-thalassemia gene therapy was analyzed. The rAAV2 containing a normal human?-globin gene (rAAV2-?-globin) without helper virus contamination were produced. The viral titer, purity and the ability of mediating expression of?-globin gene were detected in vitro. Then, human early fetal liver hematopoietic cells were isolated and were further transducted with the rAAV2-?-globin, followed by transplantation into sublethally irradiated BALB/C nude mice to analyze the?-globin gene expression. The results showed that the high titer and purity of rAAV2-?-globin had the ability of mediating ?-globin gene expression in vitro. In 8 recipient BALB/C nude mice, the ?-globin gene expression were detected in the 2 mice marrow by RT-PCR. The results suggested that rAAV2 could transduce human fetal liver hematopoietic cells and mediate the ?-globin gene expression in BALB/C nude mice, meanwhile the expression level of the gene was still rather low. It is necessary to perform further research on AAV2 biology before applying in ?-thalassemia gene therapy.

Objective To study the effect of diabetes on spatial memory ability and spatial associative memory ability in rats. Methods 70 SD rats( 180±20 g) were randomly divided into 3 groups: control group,type1 diabetes group and type2 diabetes group. Type1 and type2 diabetic rat models were set up by streptozocin (STZ) intraperitoneal injection and high fat forage raise. The blood glucose was determined. After rat diabetic model established 1 month and 3 months, respectively, the Morris water maze experiments were implemented,including 4 days' place swimming and 1 day's space exploration. Results After 1 month, diabetic rats' spatial memory ability and spatial associative memory ability were not affected. After 3 months, in place swimming test,the escape latency of two diabetic rat groups was obviously longer than that of the control group (P＜0.05). From the second day of the experiment, escape latency of the control descended sharply, while that of the diabetic group descended slowly. There was no difference between type 1 and type2 diabetic groups in escape latency (P＞0.05). After 3 months, in the space exploration test, when rats were put into the maze from I quadrant which already trained, swimming time in the platform quadrant was shorter, the other parameter scores were lower of the two diabetic model groups, contrast to the control group (P＜0.05). The parameter scores of type2 diabetic group were lower slightly than type1 diabetic group. When rats were put into the maze from IV quadrant for which never trained, the parameter scores of two diabetic groups were lower than that of the control group (P＜0.05) and the total score of type 1 group was lower than that of type2 group. Conclusion The spatial memory ability and spatial associative memory ability of type 1 and type2 diabetic rats descended. In the experiment, the spatial memory ability of type2 diabetic rats was more significantly affected than that of type1 diabetic rats. By contrast,type 1 diabetic rats' spatial associative memory ability descended greatly than that of type2 diabetic rats.

Pain is the most fearful symptom in cancer patients.The cancer patients suffered refractory pain with the progress of cancer.Not all cancer patients could obtain adequate pain relief by the mefhod of three-step pain relief ladder of WHO.With the reseach and recognition of the mechanisms,the pain can be effectively controlled by the right technique at the right time.It is summarized in this artical about the central and peripheral mechanism and the treatment progress of the terminal cancer pain.

β-Thalassemia is an inheritance anaemia disease due to the defect in β- globin gene. Gene therapy is considered to be the only method which could cure this disease. Adeno-associated virus type 2 (AAV2) has benn gaining more attention as a vector in human gene therapy for its non pathogenic character and broad host range. Although, the efficacy of recombinant AAV2 (rAAV2) in transducing human hematopoietic stem cells has been investigated by researchers, the results were varied from different laboratory. The view was proposed recently that it may be resulted from helper virus in their packaging system. Respecting this, the packaging system without helper virus was used to produce rAAV2. Human early fetal liver hematopoietic cells not only possess many superior peculiarity compared to hematopoietic cells of bone marrow or cord blood, but also the inherent β-globin gene in the cells is not expressed. Studies on the AAV2 transduction of human fetal liver hematopoietic cells and mediated expression of β- globin gene in vivo were performed and the potential role of AAV2 in β-thalassemia gene therapy was analyzed. The rAAV2 containing a normal human β-globin gene (rAAV2-β-globin) without helper virus contamination were produced. The viral titer, purity and the ability of mediating expression of β-globin gene were detected in vitro. Then, human early fetal liver hematopoietic cells were isolated and were further transducted with the rAAV2-β-globin, followed by transplantation into sublethally irradiated BALB/C nude mice to analyze the β-globin gene expression. The results showed that the high titer and purity of rAAV2-β-globin had the ability of mediating β-globin gene expression in vitro. In 8 recipient BALB/C nude mice, the β-globin gene expression were detected in the 2 mice marrow by RT-PCR. The results suggested that rAAV2 could transduce human fetal liver hematopoietic cells and mediate the β-globin gene expression in BALB/C nude mice, meanwhile the expression level of the gene was still rather low. It is necessary to perform further research on AAV2 biology before applying in β-thalassemia gene therapy.

Objective To study the effects of diabetes on hippocampal synaptic plasticity in perforant path-dentate gyrus pathway (PP-DG) in rats. Methods 70 SD rats( 180±20) g were divided into 3 groups at random: control group, type1 diabetes group (DM1)and type2 diabetes group (DM2). After Morris water maze test, 15 rats that showed worse spatial memory ability were selected in each model group to investigate the variation of paired-pulse facilitation (PPF) and the range of synaptic plasticity. Field potentials were recorded in the dentate gyrus of the dorsal hippocampus by stimulating the perforant path. Results Contrast to the control group, diabetic rats' hippocampal LTP were depressed (P<0.05), and type1 diabetic rats' LTP reduced much more. Diabetic rats' PPF ratio was reduced contrast to the control group (P<0.05). Conclusion Type1 and type2 diabetes impaired synaptic plasticity of hippocampal PP-DG pathway in rats, which conformed the results of water maze test.

Objective The purpose of this study is to determine whether the TransAtlantic InterSociety Consensus (TASC) criteria (Ⅱ-2007 versions), the Society of Vascular Surgery (SVS) runoff score or risk factors for peripheral arterial disease were correlated with postoperative outcome of superficial femoral artery occlusive disease. Methods From January 2006 to September 2009, patients who suffered from lower extremity atherosclerosis occlusion disease and underwent endovascular or surgical therapy in superficial femoral artery segment were reviewed retrospectively at Beijing Tongren Hospital. Femoralpopliteal artery lesions were graded according to the TASC Ⅱ criteria. Runoff scores were determined in infrapopliteal artery segment lesions. All patients were followed up. Kaplan-Meier method was applied to calculate primary patency rate, and COX regression analysis was used to determine if TASC Ⅱ classification,runoff score, or factors for peripheral arterial disease affected primary patency rate. Results 142 patients (197 limbs) were followed up after treatment at 1 month, 3 months, 6 months, and every 6 months thereafter. Median follow-up time was 13 months. By Cox regression analysis, TASC Ⅱ classification(RR =1.471,P = 0. 012 ), runoff score ( RR = 1.190, P = 0. 004 ), and type 2 diabetic mellitus ( RR = 2. 320, P =0.019) significantly affected primary patency. Conclusions Postoperative poor patency rates are associated with higher degree of the TASC Ⅱ lesions, poor initial runoff score, and type 2 diabetic mellitus in patients of superfical femoral artery occlusive disease.

Cell cycle-related kinase (CCRK) as a novel CDK-activating kinase plays a significant role in cell cycle regulation.Related studies confirm that CCRK is overexpressed in various tumors,and is associated with poor prognosis of the patients,which indicates that CCRK takes part in the generation and development of the tumor.

Bone marrow from 20 patients suffering from aplastic anemia were cultured with fetal muscle condition medium and in three different combinations: (1) Marrow from the patients cultured alone; (2) Coculture of marrow from patient with normal marrow; and (3) Culture of normal marrow with serum from patient. It was found that: (1) Nine patients had low colony formation when culture alone; no suppression in coculture and no inhibiter factor was found in serum from patient. Stem cells might be absent or defective in these patients. (2) Five patients had low colony when cultured alone; their marrow showed marked inhibitory effect on normal marrow CFU-C in coculture. and the latter was decreased by 40-100%. Suppressor cells might have caused the aplasia in these patients. (3) The sera from five patients suppressed CFU-C of normal marrow cells, colony counts being decreased by 55-77%. The cause of aplasia in these patients might be the presence of an humoral inhibiting factor. (4) In one patient no abnormal findings were found in all three different combinations of cultures. This patient might be suffering from a defective hematopoietic environment.