The expression of mucins gene in the human nasal polyps and allergic rhinitis / 临床耳鼻咽喉头颈外科杂志

Objective:To detect the mucin gene (MUC2,MUC5AC,MUC5B,MUC18 and MUC19)expression in the nasal polyps, allergic rhinitis (AR)and the normal nasal mucosa in human. To investigate the role and clinical significance of mucin gene in the pathogenesis of nasal polyps and AR patients .Method:We obtained samples from 35 cases of nasal polyps,18 cases of AR inferior turbinate and 18 cases of simple nasal septum deviation inferior turbinate. Specimens were analyzed with RT-PCR and Real-time FQ-RT-PCR.Result:The results of RT-PCR and FQ-RT-PCR showed that the expression of MUC5AC,MUC5B in nasal polyps and AR patients was significantly higher than that in normal mucosa(P0.05). The expression of MUC2, MUC18 in nasal polyps and AR was not significantly different from that in normal mucosa(P>0.05). And the results of RT-PCR for MUC19 expression in AR was higher than that in nasal polyps group and normal group(P<0.05 or P<0.01).Conclusion:MUC5AC and MUC5B are highly expressed in epithelium of human nasal polyps and AR, and they take part in mucus over-secretion in nasal polyps and AR.The expression of MUC19 in AR was higher than that in nasal polyps group and normal group. It indicates that the secretion of MUC19 in allergic rhinitis was on high level. There was no difference of the expression of MUC2 and MUC18 in nasal polyps group, AR group and in normal group.

Expression of EBF3 in hepatocellular carcinoma and the effect of EBF3 overexpression on HepG2 cell proliferation / 中华微生物学和免疫学杂志

Objective To investigate the expression and clinical significance of early B-cell factor 3 (EBF3) mRNA and protein in hepatocellular carcinoma(HCC) and the effect of EBF3 overexpression on HepG2 cell proliferation. Methods The expression levels of EBF3 mRNA in 20 pairs surgical specimens of HCC and their distant noncancerous tissues were detected by fluorescence quantitative real-time polymerase chain reaction(FQ-RT-PCR). Western blot was used to detect the expression levels of EBF3 protein in 5 pairs surgical specimens of HCC and distant noncancerous tissues. The fusion protein EBF3-EGFP was ex-pressed in HepG2 cells by transfection of pEGFP/EBF3 into the synchronized HepG2 cells using lipo-fectAMINE 2000 regent. Expression of EBF3-EGFP fusion protein was observed under the inverted fluores-cence microscope. S-phase fraction(SPF) and proliferating index(PI) were analyzed with flow cytometry (FCM). Results The ratio of EBF3 mRNA to β_2 mRNA in HCC tissues was significantly higher than that in distant liver non-cancerous tissues(0.55 ±0.12 versus 0. 22 ± 0.23, t = 5.69, P < 0.001 ). EBF3 protein in nuclear extracts of HCC tissues was about 4 fold that in distant non-cancerous tissues (26.35 ±14.06 versus 7.86 ± 8.47, t = 2.52, P = 0.036). Fluorescence microscopy revealed that 24 h after trans-fection of pEGFP/EBF3 into hepatoma HepG2, the fluorescence of EBF3-EGFP fusion protein was mainly observed in the nucleus. After transfection for 24 h and 48 h, SPF and PI were markedly increased in HepG2 cells transfected by pEGFP/EBF3 as compared with that in pEGFP-N1 transfeeted cells. Conclusion The expression of EBF3 at both mRNA and protein levels was up-regulated in HCC tissues. EBF3 promotes HepG2 cells proliferation through DNA replication, effect of EBF3 in ttCC needs to be further investigated.

Investigation of GR-? m RNA quantitative expression in nasal polyps / 中国耳鼻咽喉头颈外科

OBJECTIVE To detect the expression of the Glucocorticoid receptor-?(GR-?)mRNA in nasal polyp and normal nasal mucosa and investigate the route of nasal drug administration in patients of nasal polyp. METHODS The expression of GR-?mRNA in 101 samples of nasal polyps and 31samples of normal nasal mucosa was examined by using Fluorescent quantitative PCR .RESULTS The level of GR-?mRNA in normal nasal mucosa(135.4? 5.25)?104 copy /?g were significantly higher than that in nasal polyps(23.5?12.1)?104 copy/?g . CONCLUSION Because of the low expression of GR-?mRNA in nasal polyps,the route of nasal drug administration in patients with nasal polyps may be in the part of normal mucosa,not in the mucosa of nasal polyps of the nasal cavity.

Expression and significance of transcription factor EBF3 in tissues of human primary hepatocellular cancer / 临床检验杂志

Objective To investigate the expression differences of mRNA and protein of early B-cell factor 3(EBF3) in the tissues between hepatocellular carcinoma(HCC) and distant noncancerous tissues and the clinical significance.Methods The expression levels of EBF3 mRNA in 18 pairs surgical specimens of HCC and their distant noncancerous tissues were detected by real-time fluorescence quantitative polymerase chain reaction(FQ-RT-PCR).Western blotting was used to detect the expression levels of EBF3 protein in 5 pairs surgical specimens of HCC and distant noncancerous tissues.Results The ratios of EBF3 mRNA tobeta2 microglobulin mRNA in eighteen liver cancerous tissues(0.52?0.17) were significantly higher than those in distant liver noncancerous tissues(0.28?0.23,t=3.56,P=0.0011).The average gray scale level of EBF3 in five liver cancerous tissues(26.35?14.06)were significantly higher than those in distant noncancerous tissues(7.86?8.47,t=2.52,P=0.036).Conclusion Theexpression levels of EBF3 mRNA and protein up-regulated in primary hepatocellular carcinoma,suggestting that EBF3 may contribute to occurrence of primary hepatocellular carcinoma.