Objective To investigate the relationship between the expression of endothelial nitric oxide synthase (eNOS), vascular endothelial growth factor (VEGF) and the angiogenesis in human malignant melanoma (MM). Methods Tissue sections from 31 MM patients were examined. The protein expression of eNOS and VEGF was detected using immunohistochemistry technique and morphological quantitative analysis. Microvessel density (MVD) was also counted by immunostaining with anti-FⅧRAg antibody. Results (1)The positive staining of eNOS and VEGF was detected in 71.4% (24 cases) and 83.9% (26 cases) of MM respectively. As negative control there was no staining in the nevus pigmentosus tissue sections. (2)There was a positive correlation between the expression of eNOS and VEGF in MM. (3)The positive correlation was also found between the MVD and the expression of eNOS and VEGF in MM. The number of MVD was higher in MM than that in nevus pigmentosus tissue. (4)The lymphatic metastasis was not correlated with the expression of eNOS and VEGF. Conclusion The number of the MVD increases along with the high expression of eNOS and VEGF in MM.

Objective To investigate the role of MDM2in the cell proliferation and carcinogenesis in condyloma acuminatum(CA).Methods The technique of immunohistochemistry and in situ hybridization were used to detect the expression of MDM2protein and mRNA in skin lesions of CA and normal skin of genital area.Polymerase-chain reaction(PCR)was used to type HPV DNA.Results Out of32CA specimens,the expression of MDM2protein was found in18(56.25%),the expression of MDM2mRNA was found in22(68.75%),while co-expression of MDM2protein and MDM2mRNA was found in14.According to PCR results,HPV6/11subtype was shown in28out of32CA specimens(87.5%),and HPV16/18subtype was shown in4out of32(12.5%).In eighteen out of positive specimens expressing MDM2protein,HPV6/11subtype was shown in15and HPV16/18subtype3.In twenty-two positive specimens expressing MDM2mRNA,there were HPV6/11subtype in18,and4were HPV16/18subtype.No expression of MDM2protein and MDM2mRNA was observed in normal skin.Conclusion The overexpression of MDM2may be involved in malignant proliferation and carcinomatous change of condyloma acuminatum.

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.

Objective To investigate the role of costimulatory molecules CD28/B7 in the pathogenesis of psoriasis. Methods The expression of CD28, CD80 and CD86 was detected in the lesional skin of 22 cases by immunohistochemical technique (ABC), and in the peripheral blood lymphocytes of 17 cases by flow cytometry respectively. As control, normal skin and lymphocytes from peripheral blood of healthy volunteers were also tested. Results The immunohistochemistry study showed that the expression of CD28, CD80 and CD86 in the psoriatic lesions was significantly higher than that in the normal controls (P .05). Conclusion CD28, CD80 and CD86 might play a certain role in the pathogenesis in psoriasis.

Objective To analyze the expression of secreted aspartyl proteinases (Sap) in human vaginal infection in vivo. Methods Vaginal swabs were collected from 9 healthy volunteers and 20 patients with vaginal candidiasis, and the expression of Sap1-6 was evaluated by reverse-transcriptase polymerase chain reaction using specific primer sets. Results The Sap2 and Sap5 were the most common genes expressed in the patients with vaginal candidiasis. The expression Sap3 and Sap4 was detected in all subjects. All six Sap genes were simultaneously expressed in some patients with vaginal candidiasis. Conclusion The data shows that the Sap genes 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.

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.

Objectives To study the effects of pU- vascular endothelial growth factor (VEGF)- short interfering RNA (siRNA) on the formation and apoptosis of malignant melanoma in models of nude mice and its mechanism. Methods The siRNA eukaryotic expression vector for VEGF was constructed, then transfected into A375 (a human malignant melanoma cell line) by electroporation. The nude mice models of malignant melanoma were constructed. The protein expression of VEGF and factor Ⅷ related antigen (FⅧRAg) specific for vascular endothelial cells was detected by immunohistochemical technique and morphological quantitative analysis. Microvessel density (MVD) was counted based on the endothelial cells positively stained with anti-FⅧRAg antibody. The apoptosis of the neoplasms in nude mice was quantitatively determined by TdT mediated dUTP nick end labeling (TUNEL). Results Both the number and the growth speed of the neoplasm formation were lower in the experimental group than those in the controls (both P

Objective To study the effect of siRNA targeting survivin gene on the apoptosis of malignant melanoma cell line A375. Methods The eucaryotic expression vector of pU-survivin-siRNA was constructed and transfected into the A375 cells by electroporation. The protein expression of survivin was examined by Western blotting, and cell apoptosis by flow cytometry. Results The transfection of pU-sur-vivin-siRNA significantly down-regulated survivin expression ( 0.24 ?0.02 in the transfected group versus 0.98 ?0.21 in the control group ) in A375 cells, and promoted cell apoptosis ( 83% in the transfected group versus 28% in the control group, P