microRNAs (miRNAs)play important roles in recurrent hepatocellular carcinoma by regula-ting translation of target gene expression.Researches show that the abnormal expressions of miRNAs are closely related to the recurrent hepatocellular carcinoma,and the mechanisms include regulation of tumor angiogenesis and proliferation of tumor cells.miRNAs may be the most potential therapeutic targets for recurrent hepatocellu-lar carcinoma and have special advantages in prediction.

Objective To investigate the clinical significance of preoperative three-dimensional CT scan parameters to restore postoperative limb length and reduce postoperative dislocation in patients with total hip arthroplasty (THA).Methods Clinical data of two groups involving 86 cases that had primary unilateral THA were included.In study group 45 cases were operated on with the measurement of contralateral acetabular anteversion, acetabular abduction angle, distance from femoral neck osteotomy to the center of rotation of the femoral head and distance from femoral trochanter tip to the center of rotation based on three-dimensional CT scan.Another 41 cases under conventional surgery which not used these parameters served as control.Surgical efficacy was compared to verify the role of CT scan parameters in restoring postoperative limb length and reducing postoperative dislocation.Results Period of follow-up was (11.2 ± 6.2) months in study group and (11.6 ± 6.2) months in control group.Harris hip score in study group was (87.2 ± 5.4) points versus (80.9 ± 7.9) points in control group three months after operation (P ＜ 0.05).Limb length discrepancy in study group was (0.4 ± 0.2) cm versus (1.1 ± 0.4) cm in control group (P ＜ 0.05).Each group had one dislocation three months after operation.Conclusion The parameter measurement with three-dimensional CT scan has some guiding significance in THA.

Objective To determine the toxicity, maximal dose and clinical practicality of VM26 (teniposide) plus radiotherapy for postoperative brain neurospongioma. Methods Twenty patients were alloted in phase Ⅰ trial. The total dose was 60 Gy for the field radiotherapy (30 fractions of 2 Gy over six weeks). Teniposide at three dose levels (50 mg/m2, 75 mg/m2 and 100 mg/m2) was given intravenously once a week, totally five weeks. Dose escalation was based on each level, with a minimum of five patients in cohort if severe toxicity was not observed until the maximum tolerance dose(MTD). Results The predominant form of toxicity was hematologic toxicity. Four patients developed grade 3, 4 leucopenia when a second level of MTD (75 mg/m2) was given. Conclusion Combined radiotherapy and teniposide for postoperative brain neurospongioma is well tolerated. The dose of 50 mg/m2 for phase Ⅱ clinical trial was recommended.

An enhanced gold immunochromatographic assay ( GICA ) with simplicity, rapidity and high sensitivity was developed to detect imidaclothiz by using the high affinity between biotin and streptavidin. The 13-nm AuNPs were double-labeled with anti-imidaclothiz antibody and biotinylated DNA, and the 41-nm AuNPs were labeled with streptavidin to prepare an enhanced gold immunochromatographic test strip for imidaclothiz. The working conditions of the strip were systematically optimized, and the sensitivity, specificity, precision and accuracy were assessed by testing the cross-reactivity ( CR) , spiked recovery and validation with high performance liquid chromatography ( HPLC) . Under the optimal conditions, the detection could be completed in 10 min with visual result, and the limit of detection ( LOD ) was 25 ng/mL. The analysis showed no cross-reactivity with analogues of imidaclothiz except for imidacloprid. The detection results of GICA agreed with the spiked concentrations of imidaclothiz at spiked levels of 0 . 05 , 0 . 5 and 5 μg/g in river water, rice, cucumber, tomato, pear, cabbage and apple samples. The detection results of GICA for imidaclothiz in unknown concentration river water and pear samples were consistent with that of HPLC.

To observe the expressions of matrix metalloproteinase-2 (MMP-2) and tissue inhibitor of metalloproteinase-1 (TIMP-1) in rats with pulmonary fibrosis (PF) induced by bleomycin, and to explore the mechanisms of Shenlong Decoction in preventing and treating PF.

Objective:To study the wound healing effects of the extracts of Shengji Huayu Fang with different solvents and demon-strate their important role in wound healing for deep second degree burn wound. Methods:Sixty Sprague-Dawley rats were randomly di-vidied into six groups(ten rats in each group): the control group (saline), the positive control group (asiaticoside group), Shengji Huayu Fang group respectively with petroleum ether, chloroform, ethyl acetate and n-butanol as the extraction solvent. The extracts of Shengji Huayu Fang with different solvents were applied in the rats with deep second degree burn wound, and the wound healing was e-valuated by the healing rate judged by naked eyes and computer image analysis, DNA cell cycle analysis using a flow cytometry, patho-logical reports and the degree of re-epithelialization studied by the other methods. Results:The mean healing time of the chloroform ex-tracts group [(15. 67 ± 1. 12)d] was much shorter than that of the control group [(22. 87 ± 1. 01)d, P<0. 01]. The hydroxyproline content and the percentage of S-phase cells in wound tissue in the chloroform extracts group was obviously higher than those in the con-trol group (P<0. 01). Conclusion:The present study indicates that topical application of chloroform extracts of Shengji Huayu Fang is beneficial to burn wound healing, and the chloroform extracts of Shengji Huayu Fang is the main bioactive fraction.

Objective To investigate the combination effect of curcumin and γ-ray irradiation on PANC-1 cells in vitro.Methods PANC-1 cells were exposed to γ-rays in the presence or absence of curcumin.MTT assay was performed to evaluate cell viability.The expression of P21 was evaluated with RT-PCR and Western blot.Cell cycle distribution and apoptosis were tested by flow cytometry.Results Compared with the γ-ray irradiation group,combination treatment of curcumin and irradiation decreased the cell viability (t =6.72,P ＜ 0.01) and increased the percentage of cells in S-phase (t =4.78,P ＜ 0.05),apoptosis rate (t =6.58,P ＜ 0.01),P21 protein and mRNA expression (t =5.72,5.63,P ＜ 0.01) in PANC-1 cells.Conclusions Curcumin increases the radiosensitivity of PANC-1 cells,which may have clinical implication on radiotherapy of pancreatic cancer.

Objective To describe the morphological characteristics of Porocephalus taiwana sp. nov., discuss its pathogenic features and the method of etiological diagnosis of the new disease. Methods Fecal sedimentation concentration was used to collect nymphs from the patient's watery stool for species identification. Clinical information was collected for determining the pathogenic features of the new infection. Results A new pathogenic pentastomid Porocephalus taiwana sp. nov. is discovered and a new disease-porocephaliasis taiwana-is nominated. With the findings from this case it is proposed that the traditional visceral pentastomiasis should be divided into two subtypes, Encystic and Excystic. According to the pathological features, this case belongs to the excystic visceral pentastomiasis. Conclusion Porocephalus taiwana sp. nov. is a new pathogenic pentastomid infecting humans. Porocephaliais taiwana belongs to a novel type (excystic) of visceral pentastomiasis.

Objective To clone and express HCMV UL123 gene exon 2,3(ie1-exon2,3) in bacterial two-hybrid bait plasmid,and identify its self-activation property.Methods HCMV ie1-exon2,3 carried on pTWIN1/ie1 recombinant was amplified by PCR and cloned into the pBT plasmid,which was transformed into E.coli XL1-Blue MRF' Kan host strain.The positive recombinant was identified by PCR,restriction enzyme digestions and sequencing analysis.The verified plasmid was transformed into bacterial two-hybrid system reporter strain.The soluble fusion protein was analyzed by SDS-PAGE and Western blot.The self activation effect of the recombinant was then tested.Results Bacterial two-hybrid pBT/ie1-exon2,3 bait plasmid was successfully constructed.The corresponding soluble fusion protein rIE1-N_(85)/?C1 was expressed in bacterial two-hybrid system reporter strain,and didn't show self-activation property.Conclusion Bacterial two-hybrid pBT/ie1-exon2,3 bait plasmid without self-activation property was successfully constructed,and it can be used to screen the library of fetal brains.

Objective The individualized treatment of breast cancer have attracted more and more attention .Different mo-lecular subtypes of breast cancer have different kinds of prognosis and therapeutic regimen .Studies have found that miR-342-3p is asso-ciated with breast cancer of hormone receptor and endocrine therapy resistance , as well as tumor cell apoptosis .This study was to fur-ther investigate the expressions of miR-342-3p in different breast cancer molecular subtypes and breast cancer cell lines to reveal the importance of miR-342-3p in individualized treatment of breast cancer . Methods A total of 90 tissue samples from patients with breast cancer surgery were collected .Three types of breast cancer cell line were cultured , including MCF-7, SKBr3 and MDA-MB-231.Real-time fluorescent quantitative PCR was applied to detect the expression of miR-342-3p in breast cancer tissue . Results Expression of the miR-342-3p increased the most in Lumina B type breast cancer tissue (1.594 ±0.465), followed by Lumina A type (1.386 ±0.443), Her-2 high expression type (1.165 ±0.337), and the lowest in the tripe negative breast cancer tissue (0.837 ± 0.351), representing significant difference (P<0.05).There was no statistical difference in the expression of the miR-342-3p as to different age groups, lymph node metastasis and tumor size, histological grading and staging (P>0.05).As to the expression of miR-342-3p in three types of breast cancer cell line , taking SKBr3 as the reference, the relative ratio was 126(118-134) and MDA-MB-231 was 0.017(0.014-0.018). Conclusion The expressions of miR-342-3p are different in different molecular subtypes and cell lines of breast cancer , which are relevant to different molecular subtypes of breast cancer , making it possible reference index for breast cancer typing and relevant to good prognosis .