Objective To investigate the relationship between procoagulation of HFGL 2 and abnormality of coagulation in patients with systemic lupus erythematosus (SLE) by detecting the expression of HFGL2/fibroleukin in peripheral blood mononuclear cell(PBMC) of SLE patients. Methods A polyclonal antibody against HFGL2 was applied to detecting the expression of HFGL2 protein in 32 SLE patients and 15 healthy volunteers by immunohistochemistry. Semi-quantitative measurement of HFGL2 expression in the blood specimen was done with high multiple image analytical system(HMIAS). Results The expression of HFGL2 in PBMC from 23 active SLE patients was significantly higher than that in the controls, which showed a positive correlation with the disease activity. Conclusion The expression of HFGL2 in PBMC is probably correlated with the pathogenesis and disease activity of SLE.

In order to analyze the in vivo expression of Candida albicans secreted aspartyl proteinases (SAP) in human vaginal infection, the vaginal secretion from 29 human subjects was collected by vaginal swab, and the expression of SAP1-SAP6 was detected by reverse-transcriptase polymerase chain reaction using specific primer sets. It was found that Sap2 and Sap5 were the most common genes expressed during infection; Sap3 and Sap4 were detected in all subjects and all 6 SAP genes were simultaneously expressed in some patients with vaginal candidiasis. It was suggested that the SAP family is expressed by Candida albicans during infection in human and that Candida albicans infection is associated with the differential expression of individual SAP genes which may be involved in the pathogenesis of vaginal candidiasis.

OBJECTIVE:To approach the therapeutic effect of SNMC in treating dermatosis of enzema and dermati-tis.METHODS:190patients with dermatosis of enzema and dermatitis were randomly allocated to therapy group and control group in terms of specific diseases.The control group were only treated with drug for external use,while the therapy group were treated with SNMC as well as drug for external use.RESULTS:The recovery rate and effective rate in the therapy group significantly(P

Objective To study the relationship between the mutation of the inverted repeat (IR) gene in the multiple transferable resistant (mtr) system and multiple antibiotic resistance of Neisseria gonorrhoeae. Methods The antimicrobial susceptibilities of isolated strains were tested. An agar plate dilution method was used to determine the minimum inhibitory concentrations. The target genes were amplified by PCR and subjected to sequencing. Results No mutation was found in the IR gene of either of 2 sensitive or 5 penicillin-resistant Neisseria gonorrhoeas strains. Among the 17 multiple-antibiotic-resistant strains, a strain with both azithromycin- and penicillin-resistance had T/A and T/A insertions, and another had A/T deletion. Conclusion Mutations in the IR gene of the mtr system of Neisseria gonorrhoeae might result in multiple antibiotic resistance.

To study the relationship between mutation of the inverted repeat sequence (IR) in the multiple transferable resistant system (mtr) of Neisseria gonorrhoeae (NG) and its multiple antibiotic resistance, minimal inhibitory concentrations (MICs) for the clinically isolated strains were tested by agar-dilution-method. The mtr system's IR gene of NG was sequenced after amplification by polymerase chain reaction (PCR). Either two susceptive or five penicillin-resistant strains had no base mutation in IR gene, while all of the 13 strains with multiple-antibiotic-resistance had a single-base deletion (A/T). The result suggests that a single-base deletion of the thirteen-base IR sequence in mtr system of NG might result in multiple antibiotic resistance but is not associated with single antibiotic resistance.

A site-directed mutant DNA fragment was synthesized and transfected into clinical Neisseria gonorrhoeae (NG) stains to construct the transformants that contained the corresponding mutagenesis of regulation region of mtrR gene. According to the technique of gene splicing by overlap extension (SOEing), a DNA segment with specific mutagenesis was constructed by two-step polymerase chain reaction (PCR). The mutation fragments EF could be used for the next experiment in which the mutation NG strains were induced. By comparing the recombinant EF fragments to the corresponding DNA fragments of clinical NG strains, 2 of these were not compatible completely. The results of sequencing revealed that there was a 9 bp deletion between the 45 to 54 inverted repeat sequence localized within the mtrR promoter. It can be confirmed that the fragments EF are the specifically designed mutant fragments.
Bacterial Proteins/*genetics ; DNA Fragmentation ; DNA, Bacterial/genetics ; Mutagenesis, Site-Directed ; Neisseria gonorrhoeae/*genetics ; Neisseria gonorrhoeae/metabolism ; Recombination, Genetic ; Repressor Proteins/*genetics ; Sequence Deletion ; Transfection ; Transformation, Bacterial

Objective To construct a prokaryotic expression plasmid pET-28a(+) encoding the multiple transferable resistance C (mtrC) gene of N. gonorrhoeae and express it in E.coli DE3, in order to provide a model to study the pathogen's resistance mechanisms to antimicrobial hydrophobic agents. Methods The mtrC gene of N. gonorrhoeae was amplified by polymerase chain reaction from reference strains,cleaved with restriction endonuclease, and then cloned into the prokaryotic expression plasmid pET-28a (+) to construct the recombinant pET-mtrC. This was confirmed by cleavage of restriction endonuclease and DNA sequencing. The recombinant pET-mtrC was transformed into E.coli DE3 to express the protein MtrC with induction by IPTG. Results The mtrC gene in the recombinant pET-mtrC showed 99.5% homology with the reference sequence in GeneBank (U14993). A 48.5 kD fusion protein was identified by SDS-PAGE. Conclusions The successful construction of a prokaryotic plasmid encoding the mtrC gene of N. gonorrhoeae and its expression in E.coli may facilitate the development of a monoclonal antibody to the MtrC protein and help to investigate the mechanism of the mtr efflux system of N. gonorrhoeae.

In order to provide a rational research basis for detection of resistance of Neisseria gonorrhoeae to antimicrobial hydrophobic agents and study on the resistant mechanism of multiple transferable resistance (mtr) efflux system, plasmid pET-28a(+) encoding mtrC gene was constructed and the related target protein was expressed in Escherichia coli (E. coli) DE3. The fragments of mtrC gene of Neisseria gonorrhoeae from the standard strains were amplified and cloned into prokaryotic expression plasmid pET-28a(+) with restriction endonuclease to construct recombinant pET-mtrC which was verified by restriction endonuclease and DNA sequencing. The recombinant was transformed into E. coli DE3 to express the protein mtrC induced by IPTG. The results showed mtrC DNA fragment was proved correct through restriction endonuclease and DNA sequencing. Its sequence was 99.5 % homologus to that published on GeneBank (U14993). A 48.5 kD fusion protein which was induced by IPTG was detected by SDS-PAGE. It was concluded that the construction of prokaryotic expression plasmid of mtrC protein of Neisseria gonorrhoeae was correct and the fusion protein was successively expressed in E. coli.

The expressions of p-STAT3 and osteopontin in 22 cases of normal nevi and 43 cases of malignant melanoma were immunohistochemically detected,and the correlation between p-STAT3 and osteopontin in malignant melanoma and the correlations of p-STAT3 (or osteopontin) with invasion,metastasis and thickness of malignant melanoma were examined.The results showed p-STAT3 was expressed in 2 of 22 cases of normal nevi and 30 of 43 cases of malignant melanoma,while osteopontin was expressed in 3 cases of normal nevi and 29 cases of malignant melanoma.The expressions of p-STAT3 and osteopontin in melanoma were significantly higher than that in benign nevi.There existed significant correlations between the expression of p-STAT3 and that of osteopontin in melanoma.Furthermore,the expression rates of p-STAT3 were significantly higher in invasive or metastatic melanomas than that their non-invasive or non-metastatic counterparts,and the expression rates of osteopontin were significantly higher in invasive melanomas than that in non-invasive ones.It is concluded that p-STAT3 and osteopontin may play important roles in the pathogenesis of malignant melanoma.

Objective To investigate the effects ofendothelin-1 (ET-1) and endothelin-3 (ET-3) on the expression of transformation growth factor-beta 1 (TGF-β1) and phosphorylation of Smad 3 in malignant melanoma cell line, A375. Methods Cultured A375 cells were classified into 5 groups, i.e. control group (no stimulation), ET-1 group (stimulated with ET-1), ET-1+BQ123 group (treated with ET-1 and BQ123),ET-1 + BQ788 group (treated with ET-1 and BQ788), ET-3 group (stimulated with ET-3), to receive different stimulation. The working concentrations were 0, 0.1, 1, 10, 100 nmol/L for ET-1 and ET-3, 10 μmol/L for BQ123 and BQ788. After another 12- and 24-hour culture, ELISA, RT-PCR and Western blot were used to detect the expression of TGF-β1 protein and mRNA as well as phosphorylated Smad 3 (P-Smad 3). Results The expression of TGF-β1 in A375 cells was up-regulated by ET-1, but down-regulated by ET-3, and both of the effects were in a concentration-dependent manner. Under the stimulation with ET-1 and ET-3 of 100 nmol/L, the level of TGF-β1 reached 1289.38 ± 89.42 ng/L per 105 cells and 85.09 ± 9.37 ng/L per 105 cells, respectively, significantly different from that in unstimulated cells (both P < 0.05). BQ123 signifi-cantly blocked the up-regnlatory effect of ET-1 on the expression TGF-β1 protein(P < 0.05), but BQ788 had no significant influence on the effect, so was the case with TGF-β1 mRNA. Western blot revealed that ET-1significantly elevated the expression of P-Smad 3 in A375 cells (P <0.05), and the elevation was significantly inhibited by BQ123, but not by BQ788. The expression of P-Smad 3 was statistically decreased by ET-3 in A375 cells (P <0.05). Conclusions The expression of TGF-β1 could be enhanced by ET-1, but suppressed by ET-3. It is likely that endothelin receptor A mediates the phosphorylation of Smad 3 induced by ET-1.