Effects of the mixture of Rhizoma Curcumae and Oviducts Ranae on estrogen and its receptor expressions in ovariectomized rats / 南方医科大学学报

<p><b>OBJECTIVE</b>To study the effect of the mixture of Rhizoma Curcumae (YFN) and Oviducts Ranae on serum estrogen and spleen estrogen receptor expressions and its effect on reproductive endocrine-immune network in ovariectomized (OVX) rats.</p><p><b>METHODS</b>Female SD rat models of climacteric syndrome (CS) were established by ovariectomy. After administration of YFN in the rats for 12 consecutive weeks, the serum estrogen levels (E2, FSH, LH, T, and P) and interleukin-2 were determined using radioimmunoassay, and the expression levels of estrogen receptor in the spleen were detected with immunofluorescence assay.</p><p><b>RESULTS</b>The serum E2, T, P, and interleukin-2 levels (P<0.01) and spleen estrogen receptor expression (P<0.05) were significantly increased after high-dose YFN administration in the OVX rats as compared with the levels in the untreated OVX rats. YFN also resulted in lowered serum FSH and LH levels, but the changes were not statistically significant.</p><p><b>CONCLUSION</b>YFN can increase the serum estrogen levels and estrogen receptor expression in the spleen of OVX rats, suggesting its clinical potential for relieving CS.</p>

Expression of SARS spike gene in Shizomycete pombe / 生物工程学报

The viral spike protein is the main surface antigen of the coronavirus, and it could be useful in the research of clinical diagnosis, SARS vaccine and the structure biology.According to the analysis of the main antigen of the SARS spike protein, 5 fragments of the whole spike gene were cloned, and ligated to the vector pNMT1. Through electroporation transformantion to TCP1, the recombinant S. pombe strains capable of expressing the 5 fragments were constructed. SDS-PAGE or Western blot analysis of the induced expression products demonstrated that the 5 recombinant proteins were expressed in the fission yeast respectively.