Cell Line, Tumor ; Humans ; Matrix Metalloproteinase 2 ; analysis ; Matrix Metalloproteinase 9 ; analysis ; Melanoma ; enzymology ; Skin Neoplasms ; enzymology

Bibliometrics ; China ; Occupational Health ; statistics & numerical data ; Periodicals as Topic ; statistics & numerical data

The Coat protein and Maturase gene of E.coli bacteriophage MS2 was amplified by PCR,then the gene was cloned into pET32a to construct the intermediate vector pET32aCP.The conservative sequence of FMDV internal ribosome entry site(IRES) was cloned into the downstream of pET32aCP bacteriophage gene to construct the prokaryotic expression vector pCPES.The recombinant plasmid pCPES transformed into E.coli strain BL21(DE3) was induced to express with 1mmol/L IPTG.The expression products were purified by sucrose density gradient centrifugation.The expression products observed by TEM were circular viruslike particles,and the diameter of these particles was about 26nm.The stability of viruslike particles was detected,and the viruslike particles was identified by RTPCR.The results showed that the viruslike particles contain the FMDV IRES RNA and have good stability.The viruslike particles have great prospect as the standard and quality control in the area of RNA virus detection.

Animals ; Ciliary Neurotrophic Factor ; genetics ; metabolism ; Microwaves ; RNA, Messenger ; genetics ; Rabbits ; Retina ; metabolism ; radiation effects

Angiolymphoid Hyperplasia with Eosinophilia ; pathology ; Child, Preschool ; Humans ; Male

Objective To assess the safety, tolerability and efficacy of preoperative low dose intravenous amiodarone in the prevention of atrial fibrillation (AF) after off-pump coronary artery bypass grafting (OPCAB). Methods Two hundred patients with coronary atheroselerotic heart disease underwent selected OPCAB and were randomly divided into two groups: control group (100 cases) and experimental group (100 cases). Patients in control group were given conventional medicines and placebo, and patients in experimental group were treated with low dose intravenous amiodarone daily for 4 days before surgery. They were given conventional medicines after surgery. Results After the off-pump coronary artery bypass grafting, the incidence of AF, ventricular rate and the duration of AF in the experimental group were lower than those in control group [15% vs. 41%, χ2=16.766, P=0.000; (126.0±20.8) times/ min vs. (150.0±25.6) times/ min, t=0.478, P =0. 017; (8. 0±8. 6) h vs. (12.0±9.6) h, t=0. 439, P=0. 019]. No significant difference were found in the incidence of side effect between low close amiodarone group and the control group. Conclusions Prophylactic application of low dose intravenous arniodarone before off-pump coronary artery bypass grafting can safely and effectively reduce the postoperative ventricular rate and the incidence of AF, shorten the duration of AF, promote the rehabilitation and slightly improve the clinical symptoms.

Purpose:To investigate method of early detection of breast cancer with microcalcification observed by mammograph but without palpable mass clinlcally.Methods:Stereotatic core needle biopsy (SCNB) were performed in 35 patients with calcification observed by mammography,and 29 people received stereotatic needle localized breast biopsies (NLBB).All tissues were routinely processed.Microscopic analysis of calcification and morphologic analysis of calcifica- tion were done,as well as histologic diagnosis.Results:Among the 35 specimens of SCNB,microscopic calcification,in- traductal carcinoma and invasive ductal carcinoma were detected in 24,8,and 4 respectively.Calcification was identified in 25 of the 29 cases of NLBB.Five cases of intraductal carcinoma,six cases of invasive ductal carcinoma as well as one case of invasive lobular carcinoma were diagnosed in these 29 patients.Conclusions:With close cooperation among pathol- ogists,surgeons and radiologists,the application of SCNB and NLBB may benefit the early detection of breast cancer with microcalcification observed by mammograph but without mass being palpable clinically and finaly improve the survival of breast cancer patients.

Objective To investigate the expressions of transferrin receptor (TfR) mRNA, ferritin(Fn) mRNA and iron regulatory proteinl (IRP-1) mRNA in the placentas complicated with fetal iron deficiency(ID). Methods Depending on the cord SF,the subjects were divided to fetal ID group and fetal iron sufficient( IS) group. TfR mRNA, Fn mRNA and IRP - 1 mRNA in placentas were measured by RT - PCR. Results 1. The expression of TfR mRNA in ID group was 1.10 ? 0. 26, it was significantly higher than that in IS group (t=0.028 P0.05) ;4. TfR mRNA and Fn mRNA correlated with fetal IS respectively. Conclusion Fetal ID induces highly expressed TfR mRNA and lower level of Fn mRNA to furthest satisfy the iron need for fetus.