ADP-ribosyl Cyclase 1 ; metabolism ; Aged ; Epstein-Barr Virus Infections ; Herpesvirus 4, Human ; isolation & purification ; Humans ; Interferon Regulatory Factors ; metabolism ; Ki-67 Antigen ; metabolism ; Male ; Nasal Cavity ; Nose Neoplasms ; metabolism ; pathology ; surgery ; virology ; Plasmacytoma ; metabolism ; pathology ; surgery ; virology

Objective To investigate the effect of MDR1 and MDR3 gene silence by shRNA of human breast carcinoma cell line MCF-7/Adr,and explore the role of MDR1 and MDR3 in adriamycin-resistance of breast carcinoma cells. Methods shRNA plasmid vector specifically targeting MDR1 and MDR3 gene was transfected into cells. The control group was transfected with empty vector. The concentration of adriamycin was detected by the flow cytometry (FCM). Cell apoptosis was analysed by FITC-Annexin-V/PI double staining. Cell viability and the IC50 of adriamycin on MCF-7/Adr cells were determined by MTT method. MDR1 and MDR3 mRNA were assessed by RT-PCR. P-gp expression was detectedby immunochemistry. Results After treatment with ABCB1 and ABCB4 shRNA plasmid vector, the apoptosis of MCF-7/Adr cells was (30.21±1.65)%and (22.07±2.17)% respectively. Compared with untransfecedgroup and empty vector transfection group the difference was significant(P＜0.01). MDR1 and MDR3 shRNAcould increase cellular adriamycin accumulation of MCF-7/Adr cells. MCF-7/Adr cells viability and the IC50were significantly decreased after transfection. Compared with untransfeced group and empty vector transfectiongroup, the mRNA level of MDR1 and MDR3 in MCF-7/Adr cells were decreased by (89.5±0.8)%and(85.1±1.2)%, the reduction of MDR1 and MDR3 mRNA was in a time-dependent manner. Immunochemistry proved that the expression of p-gp was significantly inhibited. Compared with untransfeced group and empty vector transfection group the difference was significant (P＜0.05). Conclusion The shRNA can effectively and specifically silence the expression of MDR1 and MDR3 gene, reverse the adriamycin-resistance mediated by P-gp in MCF-7/Adr cells. The reversal effect of adriamycin-resistance by shRNA of MDR1 is more effective than that of MDR3.

Adult ; Ammonia ; poisoning ; Female ; Humans ; Microscopy, Electron ; Poisoning ; complications ; Respiratory Function Tests ; Respiratory System ; drug effects ; pathology ; ultrastructure ; Time Factors

To clone, express and primarily use human autoantigen Sm D1 in methylotrophic yeast Pichia Pastoris. The gene Sm D1 was cloned by PCR.The PCR product was inserted into the vector pPIC9k. The recombinant plasmid pPIC9k- Sm D1 was transformed into yeast SMD1168 by electroporation. The positive clones were screened in MD plates. The high copy number transformants were rapidly selected by using G418 and were induced by methanol. Supernatants after induction were analyzed by SDS-PAGE and im-munodot. The PCR product was showed about 360 bp in size which was in accordance with predicted. The pPIC9k-Sm D1 showed the same seqencing result with GenBank’s report and restriction enzyme analysis confirmed our prediction. The pPIC9k-Sm D1 positive clone produced an about 16 kD protein which had natural immunogenicity of human autoantigen Sm D1 by SDS-PAGE and immunodot. The sensitivity and specificity of immunodot were 96% and 100%, respectively. The agreement between immunodot and im-munoblot was 98%. Successfully cloning and high-level expression of human autoantigen Sm D1 in methy-lotrophic yeast Pichia pastoris laid a foundation for further research work.

AIM: To explore the clinical effects of high frequency electrical capsulotomy in maturation period cataract surgery.
●METHODS: A total of 68 cases of maturation period cataract were selected and underwent the surgery of continuous circular capsulorhexis using the high frequency electrical capsulotomy.
●RESULTS: The success rate was 91% in 68 cases with the high frequency electrical capsulotomy.
● CONCLUSION: The high frequency electrical capsulotomy in maturation period cataract surgery has significant advantages and brilliant clinical values.

Objective To obtain recombinant human Smith D1 (Sm D1) antigen and establish detecting assay.Methods Human Smith D1 antigen was synthesized by PCR using human Leukemic cDNA. The prokaryotic expression vector pGEX-ST-Sm D1 was constructed and transformed into E.coli.BL21 cell.Protein expressed under the induction of IPTG.We established DIGFA for detecting anti-Sm D1 antibodies with purified Sm D1 antigens.Results Sequence and restriction analysis revealed Sm D1 gene was cloned in frame into pGEX-5T,SDS-PAGE profile showed a clear protein band with a relative molecular weight of 39 000 and western blotting indicated that the expressed product specifically reacted to polyclonal anti-human Sm D1 genes.There was no significant difference between DIGFA and IB.The agreement between DIGFA and IB was 91.7% as calculated by Kappa statistical method.The sensitivity and specificity of DIGFA were 100% and 83.3% repectively.Conclusions Human Sm D1 gene is successfully cloned、 expressed and purification.The DIGFA,using purified Sm D1 antigens,is as good as IB,rather simpler, more rapid and reliable assay.

Adult ; Coloring Agents ; adverse effects ; Diagnosis, Differential ; Humans ; Lymphadenitis ; chemically induced ; Male ; Melanoma ; secondary ; Tattooing ; adverse effects

This paper proposes a one-way micro valve with a simple structure and a simulation design for the engineering capsule. We have now got its design parameter selection method and its mechanic characteristic from experiments.
Capsules ; Computer Simulation ; Drug Delivery Systems ; methods ; Equipment Design ; Infusion Pumps, Implantable ; Technology, Pharmaceutical ; instrumentation ; methods

OBJECTIVETo compare the clinical effects of circumcision and the foreskin-deglove plus shaft-fix (FDSF) procedure in the treatment of phimosis or redundant prepuce in obese adult males (body mass index [BMI] ≥ 28 kg/m²).

METHODSForty-four obese adult men with phimosis or redundant prepuce underwent circumcision (n = 24) or FDSF (n = 20) according to their own wishes. The patients in the circumcision and FDSF groups were aged (26.38 ± 4.24) and (26.90 ± 3.14) years, with BMIs of (27.77 ± 0.77) and (28.07 ± 2.28) kg/m² and penis lengths of (3.51 ± 0.46) and (3.50 ± 0.59) cm, respectively. The operations were performed under local anesthesia with lidocaine plus ropivacaine mesylate.

RESULTSThe operation time of circumcision was (28.04 ± 2.65) min and that of FDSF was (45.45 ± 3.49) min. At 6 months after surgery, normal penile erection was found in all the patients, the penis length was significantly longer in the FDSF than in the circumcision group ([5.01 ± 0.73] vs [3.70 ± 0.47] cm) , and the rate of satisfaction with penile appearance was markedly higher in the former than in the latter group (3.25 ± 0.71 vs 2.83 ± 0.56).

CONCLUSIONThe foreskin-deglove plus shaft-fix procedure under local anesthesia with lidocaine and ropivacaine mesylate may achieve desirable penile erection and appearance in the treatment of phimosis or redundant prepuce in obese adult patients.

Adult ; Amides ; Anesthetics, Local ; Body Mass Index ; Circumcision, Male ; methods ; Foreskin ; abnormalities ; surgery ; Humans ; Lidocaine ; Male ; Mesylates ; Obesity ; complications ; Operative Time ; Penile Erection ; Penis ; abnormalities ; Phimosis ; surgery

Adult ; Antigens, CD20 ; metabolism ; Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; CD3 Complex ; metabolism ; Cyclophosphamide ; therapeutic use ; Diagnosis, Differential ; Doxorubicin ; therapeutic use ; Epstein-Barr Virus Infections ; drug therapy ; metabolism ; pathology ; Follow-Up Studies ; Herpesvirus 4, Human ; Hodgkin Disease ; Humans ; Lymphoma, Large B-Cell, Diffuse ; drug therapy ; metabolism ; pathology ; virology ; Male ; Prednisone ; therapeutic use ; RNA, Viral ; metabolism ; Vincristine ; therapeutic use ; Young Adult