Hepatocellular carcinoma(HCC)has high incidence rate,recurrence rate after surgecal treat-ment,as well as fatality rate in China .HCC is not sensitive to radiotherapy or chemotherapy and no effective treat-ment is available for HCC patients at advanced stage .Sorafenib is the first effective molecularly targeted drug for the treatment of HCC,which represents a milestone in the treatment of HCC .However,it also shows drug resist-ance during clinical application .Therefore,it is important to investigate the mechanism of drug resistance and its molecular markers for HCC .In this review ,we summarize the current status of the studies in these fields .

Objective To evaluate the safety and effect of percutaneous fenestration of intimal flap(FIF) and endovascular stent(ES) placement for aortic dissection. Methods Male patient, 54 years old. DeBakey Ⅲb aortic dissection, tear of intimal flap situated at the beginning of desconding aorta, developed to abdominal aorta and right iliac artery. The true lumen was 3 mm at narrowest locatation. Through femoral artery approach, percutaneous fenestration of intimal flap and ES placement are operated and four ES were placed. Results The blood flow of aortic true lumen and branches were resumed. The true lumen raised to 12 3 mm at the narrowest locatation. The clinical symptoms vanished. Conclusion Percutaneous fenestration and ES placement for aortic dissection feature little injure, high safety and effecacy. So, It is the first choice for certain aortic dissection.

The Telomeric Repeat Amplification Protocol(TRAP)and its modified versions change the size and/or the ratio of the telomerase products in the amplification stage of the assay.Based on TRAP,a useful method was developed for detecting telomerase activity in rice.A special precursor primer and a special reverse primer and conducted two steps of PCR cycles were designed.GENE Genius? Bio-imaging System was applied for this quantitative analysis for exploring telomerase activity and its optimal reaction conditions.The method ensured that the optimal reaction conditions for the telomerase was 19℃,13minutes,at a concentration of 0.28 u g/? l.A quantitative analysis method was established for detecting telomerase activity in rice.With this method,we detected telomerase activity in roots,young leaves and young panicles of six parental lines of hybrid rice.The results show that young panicles have the highest telomerase activity,demonstrating that telomerase activity is closely related to the cell vitality in plants.

Objective To study the value of the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) in gene diagnosis on spinal muscular atrophy (SMA).Methods PCR-RFLP method was used to detect the homozygous deletion of the exon 7 or exon 8 of SMN gene in 20 SMA patients of Type Ⅰ,Ⅱ,Ⅲ and 15 normal individuals.Results Homozygous deletion of exon 7 and exon 8 of the SMN gene were all identified 7/7 in SMA TypeⅠpatients, and 5/5 and 4/5 respectively in SMA Type Ⅱ patients, but only 1/8 of SMA Type Ⅲ patients, and no homozygous deletion was found in the normal controls.Conclusions PCR-RFLP might be recommended as an effective diagnosis for spinal muscular atrophy Type Ⅰand Ⅱ patients, whereas the method might not be as useful in Type Ⅲ as in Type Ⅰand Ⅱ for the gene diagnosis.

Adenoma, Oxyphilic ; classification ; pathology ; Carcinoma, Renal Cell ; classification ; metabolism ; pathology ; Humans ; Kidney ; pathology ; Kidney Neoplasms ; classification ; genetics ; pathology ; therapy ; Molecular Biology ; methods ; trends

Objective To investigate the immunological reaction,serum and liver ?-L-iduronidase(IDUA) activity after human fetal liver cells(FLCs) transplantation therapy on mucopolysaccharidosis(MPS) which attribute to IDUA defect.Methods FLCs were transplanted into IDUA deficiency mice.T cell subsets(CD3,CD4 and CD8) was detected by flow cytometry,while IL-2,TNF-? and IFN-? by ELISA,and serum and liver IDUA activity by fluorospectrophotometer at different stage(before transplantation and 5,10,15 days after transplantation).Results Human FLCs survived in IDUA deficiency mice,bringing elevated serum and liver enzyme activity to receptor.T cell subsets,IL-2,TNF-? and IFN-? was significantly higher 5,10 and 15 days after transplantation than those before transplantation(P

Objective:To study the effects of Tongxinluo,a traditional Chinese medicine,on the proliferation of peripheral blood-derived endothelial progenitor cells(EPCs)in vitro.Methods:The Tongxinluo solution was prepared through ultrasonication according to the pervious literature.The mononuclear cells(MNCs)were isolated from the peripheral blood with Ficoll by density gradient centrifugation.MNCs were suspended in Medium 199 containing 20% fetal blood serum(FBS)and vascular endothelial growth factor(VEGF).After cultured for 7 d,the attached cells were characterized by Di-LDL uptaking and FITC-lectin binding by laser confocal microscope,and further identified through detection of CD34 and CD133 expression by flow cytometry.Then the cultured EPCs were incubated with Tongxinluo at a series of concentrations(0,50,100,200,500, 750,1000?g/ml)for different durations(0,6,12,24 and 36 h).The cell morphology was observed and cell proliferation was determined by MTT assay.Results:Incubation with different concentrations of Tongxinluo increased the proliferative ability of EPCs.Tongxinluo at 500?g/ml had the most prominent effect on proliferation and the effect increased as time went by and reached peak at 36 h(growth rate 54.18%,P

Pinellia ternate and Pinellia pedatisecta lectins with biological functions could be obtained through procaryon expression.Their biological similarities and differences were analyzed and further experiments were conducted to discuss the agglutinative activity difference between polymer lectin and metamer lectin.The results showed that agglutinative activity of Pinellia pedatisecta was four times more than that of Pinellia ternate.The differences of the agglutinative activity and pharmacologic action were mainly because two site mutations of Pinellia pedatisecta in the third active site compared with the amino acids sequence in Pinellia ternate.In addition,the metamer lectin expressed by prokaryotic expression system did not agglutinate rabbit red blood cells.It conduct further discussion about the difference between two lectins and the difference between polymer lectin and metamer lectin.It would be applicable for solving the problem of lacking Pinellia resources.

Objective To evaluate the effectiveness of health education on controlling of coal-burning-borne endemic fluorosis(referred to as endemic fluorosis) in Guizhou,and to provide a scientific basis for development of control strategies.Methods A total of 37 counties were selected in Guizhou province,and 3 townships were chosen in each project county.Heath educational activities were carried out in the classes of grade 5 in the Central Primary School of each selected township.In the meantime,3 villages were chosen in each selected township where the health education for women of child-bearing age in the community was carried out.Survey on knowledge questionnaire of endemic fluorosis control was conducted among 30 students of grade 5 in the Central Primary School and 15 women of childbearing age of each selected township before and after the health educational activities.Results The knowing rate of endemic fluorosis control of pupils in all the 37 counties increased from 45.03％(14637/32505) to 89.79％(52898/58910),of women of child-bearing age increased from 38.97％ (5729/14700) to 76.55％(19198/25080) after the health education.ConclusionsThe knowing rate of endemic fluorosis control among pupils and women of child-bearing age is remarkably increased after implementing the health education projects.They have better life and health habits,and the project has reached desired goal.

OBJECTIVETo study the clinical effects of Müller method for reconstruction of posterolateral corner (PLS) of knee joint.

METHODSFrom June 2005 to June 2007, 13 patients with PLS injured were treated with Müller method. Four patients complicated with injuries in anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL), 7 patients complicated with injuries in PCL, 4 patient also had injuries in ACL, 1 patient complicated with ACL injury, and 1 patient complicated with avulsions fractures of the tibial ACL insertion. Among the patients, 5 patients had chronic injuries with a duration of 2 to 7 months. After the cruciate ligament was reconstructed, the popliteus tendon was reconstructed with iliotibial band and lateral collateral ligament (LCL) reconstructed with biceps femoris tendon. All the ligaments were fixed with interface screws. The patients were encouraged to do strength and motion exercise on bed immediately after operation and permit toe-touch weight-bearing till two months after operation. The brace was used till six months after operation.

RESULTSThe average follow-up period was 13 months (ranged from 6 to 27 months). There was no restriction of range of motion. External rotation range were good compared to the normal side. One year after operation, one-grade varus instability at 30 degrees flexion was found only in 2 patients. The postoperative Lysholm scores were from 77 to 94 (average 86).

CONCLUSIONThe method is easier to perform, easier to get the materiar for reconstruction and promised satisfactory clinical results.

Adult ; Female ; Humans ; Knee Joint ; physiopathology ; surgery ; Male ; Middle Aged ; Range of Motion, Articular ; Reconstructive Surgical Procedures ; methods