Objective To observe the effect of X-ray radiation on NF-κB-HIF-1α pathway activation in three malignant lymphoma and to explore the mechanism of radioresistance mediated by this pathway.Methods Expression levels of p-P65,IKK and HIF-1α in Namalwa,Ramos and Raji cells were determined by Western blot 1,4,10 and 20 h after 5 Gy X-ray irradiation.The effect of QNZ on HIF-1α expression was also observed.Results Expression level of IKK protein was up-regulated 4 h after irradiation in the 3 lymphoma cell strains( t = 8.01,5.14,5.42,P ＜ 0.01 ),followed by up-regulation of p-P65 protein expression level at 10 h and HIF-1α at 10-20 h after X-ray irradiation (t = 11.25,17.43,22.09,P ＜ 0.01 ).Pretreatment of QNZ 24 h before X-ray irradiation significantly reduced the upregulation of HIF-1α protein expression induced by simple ion radiation ( t = 18.69,19.35,12.26,P ＜0.01 ).Conclusion NF-κB - HIF-1α pathway was activated in human lymphoma cells after ion radiation and may be involved in the mechanism of radioresistance.

Objective To investigate the diagnostic significance of microcalcifications in breast cancer.Methods 120 cases of breast lesions with microcalcifications confirmed by pathology were included in this study,of them,97 cases were breast carcinoma,including infiltrating ductal carcinoma(n=71),invasive lobular carcinoma(n=23),and others 3 cases,23 cases were benign breast diseases.All cases underwent mammography,X-ray features of microcalcification were analysed in comparison with that of pathology.Results (1)The microcalcifications of breast in totally 120 cases could be divided into 3 types according to the density of calcifications,those were high (45/120),middle (34/120) and low (41/120) density.The middle and low dense microcalcifications were more seen in breast cancer(73.19%,71/97),high dense microcalcifications were more seen in benign breast diseases(82.00%,19/23).(2)The malignant calcifications were mostly less than 0.5 mm in diameter.The calcifications appeared as sandy in 68/97,bulky in 18,“Y”,“V”,branch or club in 8 and worm in 3.The benign calcifications were mostly more than 0.5 mm in diameter with regular form and defined margin.(3)Dense or clustered microcalcifications were often seen in breast cancer (82/97),scatter and/or bulky microcalcifications were more seen in benign breast diseases(16/23).Conclusion Microcalcification is important finding in diagnosis of breast cancer,espcially early cancer on macrography,but it should differentiate with benign breast microcalcifications.

Objective: To detect gallic acid in Paeonia suffruticosa Andr. by high performance liquid chromatography-mass spectrometry. Methods: A method for determining gallic acid in Paeonia suffruticosa Andr. by HPLC-MS is described. The operating conditions were Diamonsil C18 column (5μm, 4.6×250 mm) at room temperature, methanol-0.05% phosphoric acid solution as mobile phase by step gradients elution at a flow of 0.8 ml/min and UV detection at 270 nm. Results:The content of gallic acid is 1.8 mg/g. The relative standard deviation of gallic acid is 1.7%. Conclusion:The content of gallic acid in Paeonia suffruticosa Andr. is high, which may be related to the inhibition of FAS.

Objective:To detect the anti-cancer component, trans-resveratrol in red wine by high performance liquid chromatography, and to determine the influence of environmental factors on its content. Methods: A method for determining trans-resveratrol in red wine by HPLC is described. The operating conditions were ZORBAX-C18 column(4.6 mm×250 mm, 5μm) at room temperature, 30%acetonitrile as mobile phase at a flow of 1ml/min and UV detection at 306 nm. Results:The content of trans-resveratrol in Changyu dry red wine and Great Wall Claret Cabernet are (1.01±0.03)mg/L and (2.36±0.02)mg/L, respectively. The results show that, sunlight, high temperature and poor seal condition can decrease the content of trans-resveratrol. Conclusion:The content of trans-resveratrol varies in different brands of red wine. Red wine should be stored in cool, dark and sealed conditions.

Objective To investigate the effect of hyperbaric oxygen(HBO)on p38 MAPK signal pathway in neuropathic pain,and explore its mechanism. Methods The experiment was divided into two parts with thirty SD rats in each part. Each part was then randomly divided into 3 groups:sham operation group(S group),chronic constriction group(CCI group)and hyperbaric oxygen group(HBO group),with 10 rats in each group. Part one:Pain?related behavior were detected on 3 day,7 day,14 day,28 day after operation. Phosphorylative p38 was detected by Western blot method and the P2X4 receptor was detected by immunohistochemistry method on the 28th day. Part two:All the rats were treated with SB203580. Pain?related behavior were detected on 3 day,7 day,14 day,28 day after operation. P2X4 receptor was detected by immunohistochem?istry method on the 28th day. Results CCI and HBO groups were significantly lower than S group in pain?related behaviors(P<0.05). CCI group was significantly lower than that in HBO group(P<0.05). The content of phosphorylative p38 and P2X4 receptor in CCI and HBO group were increased(P<0.05),and the expression of phosphorylative p38 and P2X4 in CCI group was significantly increased than that in HBO group (P<0.05). When p38 MAPK was inhibited,pain?related behavior in HBO and CCI group increased significantly than the pain?related behavior of HBO and CCI group in Part 1(P<0.05). But the difference between group CCI and HBO was not significant(P>0.05). Though the expression of P2X4 receptor in CCI group and HBO group was significantly higher than that in S group(P<0.05),the difference between group CCI and HBO was not significant(P>0.05). Conclusion Hyperbaric oxygen therapy can affect the expression of p38 MAPK through P2X4 receptor in rats of neuropathic pain.

Objective:To analyze chlorogenic acid of Chaenomeles speciosa by high performance liquid chromatography-mass spectrometry. Methods:A method for determining chlorogenic acid of Chaenomeles speciosa by HPLC-MS is described. The operating conditions were Diamonsil C18 column (5μm, 4.6×250 mm) at room temperature, acetonitrile-0.05%phosphoric acid solution as mobile phase by step gradients elution at a flow of 0.8 ml/min and UV detection at 325 nm. Results: The content of chlorogenic acid of Chaenomeles speciosa is 1.3 mg/g (RSD 0.4%), respectively. Conclusion:Chlorogenic acid was detected from Chaenomeles speciosa, which may be related to its inhibition of FAS and the potential role of anticancer.

Objective To discuss the effect of interferon ?-2a on the radiosensitivity and cell cycle for nasopharyngeal carcinoma cell line CNE-I. Methods Interferon ?-2a was given by different concentration. Then the cells were radiated with X-ray (6?MV) and the cell survival rate was calculated. The change of cell cycle dynamics was measured with flow cytometry. Results The cell survival fraction was 0.62, 0.43 and 0.20 respectively after the interferon ?-2a was given by different concentration(0.5?106, 1.0?106 and 1.5?106?IU/L). The radiosensitization ratio was 1.16, 1.57 and 1.93 respectively. Compared with the control group, increasing cell percentage in G_1 and G_2+M phage and decreasing cell percentage in S phage were observed on 24 h after the interferon ?-2a(1?106?IU/L) was given(P

Objective:To study the effect of retinoic acid(RA) which is used in malignant tumor therapy on the secretion of C3 and factor B in human lung cancer cell line A549 induced by TNF-? and IL-6.Methods:C3 and factor B in the culture medium were measured by ELISA and Western blot,the mRNA expression of C3 and factor B was analyzed by RT-PCR.Results:When using TNF-?(10 ?g/L),IL-6(50 ?g/L) and RA(1 ?mol/L),the results of ELISA,Western blot and RT-PCR showed that TNF-? and IL-6 promoted A549 cells excreting C3 and factor B and their mRNA expression;RA alone did not affect C3 and factor B;in TNF-? group and TNF-?+RA group,the amounts of C3 were 91.40?12.59 and 133.59?11.25(ng/10~6 cells) respectively(P0.05),and the amounts of factor B were 13.07?2.50 and 32.89?4.22(ng/10~6 cells) respectively(P

Objective To investigate whether hyperbaric oxygen(HBO)affected neuropathic pain through autophagy and verify the HBO effect. Methods A total of 60 male SD rats were selected for the study and randomly divided into 4 groups:control group(C group),sham operation group (S group),chronic constriction group(CCI group)and hyperbaric oxygen group(HBO group). LC3Ⅱand P62 were determined by Western blot method and the autophagy was detected by electron microscopy on the 7th day. Results CCI and HBO groups were significantly higher than C and S group in Western blot(P<0.05). There was no difference between group C and group S(P>0.05). The expression of LC3Ⅱin HBO group was significantly higher than that in CCI group(P<0.05). And the expression of P62 in CCI group was significantly higher than that in HBO group(P<0.05). The autophagy in CCI and HBO group were significantly increased comparing to the C and S groups(P<0.05). However,the difference be?tween group C and S was not significant(P>0.05). Conclusion Hyperbaric oxygen therapy can induce autophagy for anti?neuropathic pain.

Objective:To screen fatty acid synthase (FAS) inhibitors from natural products and study their inhibitory effects on the proliferation of MCF-7 breast cancer cells.Methods: CCK-8 method was used to detect the inhibitory effects of Fructus Amomi, Polygonum cuspidatum Sieb, Cinnamomi Ramulus and their main compounds, such as polydatin, resveratrol and cinnamic acid on the proliferation of MCF-7 breast cancer cells for 24 h.Results: The results showed that the IC50 values of the 60% ethanol extracts of Fructus Amomi, Polygonum cuspidatum Sieb, and Cinnamomi Ramulus were 24.86μg/ml, 153.67 μg/ml and 178 μg/ml respectively. The IC50 value of Resveratrol was 61.75 μg/ml. The inhibitory effect of Resveratrol was better than that of Polygonum cuspidatum Sieb. Cinnamic acid, the main component of Cinnamomi Ramulus had better inhibitory activity at lower concentration.Conclusion: The 60% ethanol extracts of Fructus Amomi, Polygonum cuspidatum Sieb, and Cinnamomi Ramulus all showed inhibitory effects on the proliferation of MCF-7 breast cancer cells in a dose-dependent manner. Among them, Fructus Amomi had the best inhibitory activity.