RÉSUMÉ
Objective To explore the targeted distribution of flurbiprofen axetil (FA) in hysteromyoma and its influence on prostaglandin E2 (PGE2).Methods A total of 40 female patients undergoing myomectomy (ASA-Ⅱ) were enrolled in the present study. The patients were randomly divided into blank control group and FA groups of three different doses. The four groups were injected with normal saline, 0.5, 1, or 1.5 mg/kg of FA 15 min before the operation. Tumor tissues and normal tissues were collected by surgical operation and the sampling time was recorded. The concentration of flurbiprofen (FP), which was the active metabolite of FA, was detected in the tumor tissues and normal tissues by HPLC. The concentrations of PGE2 were detected by ELISA in the two samples. Results FP was not detected in the tumor tissues or normal tissues of the blank group. With the increase of FA dose in the three groups, the concentration of FP had an increasing tendency in the tumor tissues, with significant differences found among the three groups (P 0.05). The concentrations of FP in the tumor tissues were significantly higher than those in the normal tissue in the three FA groups (P2 had a tendency to decrease in the tumor tissues; and there were significant differences between blank group and 1, 1.5 mg/kg FA groups (P 2 in the tumor tissues were significantly higher than those in the normal tissues in the four groups (P 0.05). Conclusion FA has a certain targeted distribution in hysteromyoma and can reduce the level of PGE2.
RÉSUMÉ
Objective To investigate the effect of nimesulide (NIM), a selective cyclooxygenase-2 (COX-2) inhibitor, on angiopoietins (Ang) gene expression of human glioma xenografts in nude mice and its significance. Methods Human SHG44 glioma cells were inoculated subcutaneously in 16 nude mice to establish xenograft models, and then these mouse models were randomly divided into NIM treatment group and control group. NIM (6 mg/kg) and saline were poured into the stomachs of the mice in each group, respectively, once daily for 35 d. The mRNA expressions of Ang-1 gene and Ang-2 gene in the xenografts were determined by RT-PCR. Microvessel density (MVD) in the xenografts was assessed by immunohistochemical technique. The tumor growth curve was drawn and the inhibition ratio of tumor growth was calculated. Results NIM could significantly inhibit the glioma xenografts growth with its inhibition rate reaching 42.03%. The mRNA expression of Ang-2 gene in NIM treatment group (0.2032±0.0185) was significantly lower than that in control group (0.6024±0.0289, P＜0.05), but that of Ang-1 gene showed no significant changes; therefore, the mRNA ratio of Ang-2/Ang-1 genes was decreased (0.5825±0.0621 vs. 1.5847±0.1948, P＜0.05). MVD in the xenografts of the NIM treatment group was significantly lower than that in the control group (P＜0.05). Conclusion NIM, by down-regulating the mRNA expression ofA ng-2 gene and changing the mRNA ratio of Ang-2/Ang-1 genes, can inhibit the tumor growth
RÉSUMÉ
Two transgenic mouse strains, in which the expression of human factor IX (hFIX) in the milk were different significantly, were bred, and the foreign gene integration as well as the content of hFIX in the milk were detected by PCR, Southern blot, FISH and ELISA, respectively. The results showed that approximately 50% offsprings were transgenic positive. Foreign gene integrated in mouse chromosomes was intact. The hFIX expression of each mouse in the same strain was different, the content of hFIX in the milk was (43.32 +/- 5.41) microgram/mL in FIX-33 transgenic strain and (1.16 +/- 0.45) microgram/mL in FIX-124 transgenic strain. Meanwhile, the hFIX gene expression between the two strains was different remarkably (P < 0.01). We conclude that the characteristics of inheritance and expression in the founder were able to be transferred to their offsprings stably.