Objective To investigate the potential effect of 4-amino-pynidine(4-AP)on human cervical carcinoma cell line HeLa to 252Cf neutron ray.Methods HeLa cells were treated with 4-AP(0,1,5,10,20 mmol/L,respectively)and then exposed to 0.67 Gy 252Cf neutron ray.The effect of 4-AP on proliferation of HeLa cells was assessed by MTT assay.Cell apoptosis were detected by flow cytometry.Reverse transcription polymerase chain reaction(RT-PCR)and Western blotting were used to investigate the levels of HIF-1? mRNA and protein of HeLa cells treated with 4-AP(0,20 mmol/L)and 0.67 Gy 252Cf neutron ray.Results After HeLa cells treated with 0,1,5,10,20 mmol/L 4-AP were exposed to 0.67 Gy 252Cf neutron ray for 48 h,their inhibitory rate was 0,(38.81 ?3.45)%,(46.63?3.88)%,(63.58?6.19)%,(77.51?8.87)%,and their apoptotic rate was(3.15?0.85)%,(8.01?1.19)%,(16.00?1.58)%,(47.20?3.18)%,(62.56?4.27)%,respectively,suggesting 4-AP may inhibit the proliferation of HeLa cells and induce their apoptosis in a dose-dependent manner(P0.05).However,after treated with 20 mmol/L 4-AP and exposed to 0.67 Gy 252Cf neutron ray for 24,48 and 72 h,the optical density ratio of HIF-1? mRNA/?-actin of HeLa cells was(0.401?0.121),(0.364?0.142),(0.257?0.137),(0.165?0.099),while the optical density ratio of HIF-1? protain/?-actin were(0.879?0.117),(0.645?0.115),(0.312?0.114),(0.130?0.118),showing that the levels of HIF-1? mRNA and protein both declined(P

Objective To study the imaging of central pentine myelinolysis (CPM) and extrapontine myelinolysis(EPM) after liver transplantation and value of DWI. Methods Eight patients after liver transplantation with CPM and EPM were included in our study, 4 cases of female and 4 cases of male.MR examinations were performed on Philips 1.5 T MRI system. The sequences included SE T1 WI, FSE T2Wl,axial SE-EPI DWI,TR/TE 6225/118.7 ms, ETL 128, FLIP 90°, thickness 5 nun, matrix 128 ×128,b=1000 mm2/s. Results Four of B type hepatitis and cirrhosis and 1 case combined with hepatic carcinoma, 1 of C type hepatitis with cirrhosis from schistosome,2 of C type hepatitis and cirrhosis, 1 of cholangiogenic cirrhosis. MR demonstrated prolongation of T1 and T2 with a shape of butterfly, round or quadrangle on the brain stem sparing of the corticospinal tract and peripontine tissue. The lesion manifested high signal intensity both on DWI and ADC map indicating T2 effect and vasogenic edema. Follow up MR in 2 cases 2 months later showed more prolongation of T1 and T2 than the first time and the lesion manifested iso-intensity signal on DWI and high signal intensity on ADC map suggesting increased diffusivity. Abnormal signal intensities were detected on the bilateral caudate head, globus pallidus, putamen and cerebral cortex in 3 cases. Conclusion CPM should be considered when prolongation of T1 and T2 with a shape of butterfly, round or quadrangle on the brain stem, sparing of the corticospinal tract and peripontine tissue was detected for patients of pest-transplantation. When combined with other area abnormality, EPM and CPM should be considered. DWI can early and sensitively show the lesion.

This study analysed the tissue specific expression of critical genes involved in chlorogenic acid and luteolin biosynthesis, for exploiting the molecular mechanism of components biosynthesis in Lonicera confusa. Expression of PAL, 4CL, C4H, CHS, CHI, FNS and HQT gene families of chlorogenic acid and luteolin biosynthesis-related genes in buds and leaves of L. confusa were analyed by Real-time PCR. Expressions of PAL1, C4H1, 4CL1, CHS1, CHI3 and HQT2 in buds were lower than that in leaves, and expressions of PAL3, 4CL2, CHI2 and FNS2 in buds were higher than that in leaves. The results indicated that that PAL3 and 4CL2 may be associated with accumulation of chlorogenic acid, and the expression patterns of PAL1, CHS1, CHI3 and HQT2 in buds and leaves of L. confusa were different with L. japonica. This study provided some theoretical basis for the further research on genetic mechanism of active components differences in L. confusa and L. japonica.
Biosynthetic Pathways ; Chlorogenic Acid ; metabolism ; Gene Expression Regulation, Plant ; Lonicera ; genetics ; metabolism ; Luteolin ; biosynthesis ; Multigene Family ; Plant Proteins ; genetics ; metabolism

Objective To explore the effect of ultrasound in the diagnosis and treatment of rheumatoid arthritis .Methods though early diagnose of RA by ultrasound ,DAS28 and MRI′s result to measure the accuracy of ultrasound test .then though the ul‐trasound index at different time point in the treatment of RA patients ,we knew the changes of the joint ,and provide treatment plan and prognosis .Results ultrasound had high accuracy rate in the diagnoses of RA(P< 0 .05) ,and there were correlation among ul‐trasound diagnoses accuracy and DAS28 and MRI score(r= 0 .859 ,P< 0 .05) ;at the same time ,it provided accurate changes of the joint during the treatment ,and provided basis for treatment .Conclusion Ultrasound has manifest advantageous in diagnose RA .It could be used as a method in early diagnose RA and evaluate the effect on RA′s treatment .

OBJECTIVETo study the correlation between arachidonic acid (AA) and acute red blood cells damage in rats, and to build a model with hidden blood loss in vivo, and to explore the pathological mechenism of hidden blood loss.

METHODSA total of 50 male adult Sprague-Dawley rats weighing (200 ± 20) g were randomly divided into five groups (n = 10): control group and four experimental groups. The rats in the experimental groups were given 0.5 ml different concentrations of AA dilu- ents, 5, 10, 20, 40 mmol/L respectively. The blood samples were collected from orbital venous at the beginning and 24, 48, 72 hours after administration. Then the changes of hemoglobin (Hb) ,red blood cell count (RBC), glutathione peroxidase (GSH- PX) activity, total superoxide dismutase (T-SOD) activity and hydrogen peroxide (H202) in the blood samples were tested.

RESULTSSignificant hidden blood loss occurred when the concentration was 10 mmol/L in the experimental group, with the RBC and Hb sharply reduced in blood samples. The Hb and RBC were reduced in all the experimental groups and control group at 24 hours after administration, while in the experimental groups they changed more obviously. The GSH-PX activity, T-SOD activity and H₂O₂were also significantly reduced in all groups, and the changes showed significant differences. The Hb and RBC were relatively stable in the control group and the experimental groups at 48 hours after administration; while GSH-PX activity, T-SOD activity and H₂O₂were all significantly decreased, and the changes in the experimental groups were more notable.

CONCLUSIONElevated levels of AA in the blood causes oxidative stress in the red blood cells, leading to the damage of red blood cells and hemoglobin, which is responsible for hidden blood loss.

Animals ; Arachidonic Acid ; toxicity ; Erythrocytes ; drug effects ; metabolism ; Glutathione Peroxidase ; blood ; Hemoglobins ; analysis ; Male ; Rats ; Rats, Sprague-Dawley ; Superoxide Dismutase ; blood

BACKGROUND: Researches indicate that inducible nitric oxide synthase(iNOS) plays an important role in relieving destruction of blood brain barrier and protecting vascular endothelium and brain tissue in cerebral ischemia-reperfusion injury.OBJECTIVE: To observe the effect of Shuigou (DU26), Neiguan (PC6)and Zusanli (ST36) on the expression of inducible nitric oxide synthase messenger ribonucleic acid (iNOS mRNA) in hippocampus of the rats with cerebral ischemia-reperfusion.DESIGN: Randomized controlled study.SETTING: Shanghai University of Traditional Chinese Medicine, Shanghai Institute of Acupuncture and Meridian and Huashan Hospital Affiliated to Fudan University.METHODS: The experiment was completed at the Experimental Animal Center in Shanghai University of Traditional Chinese Medicine, Threegrade Acupuncture Immunological Laboratory of Shanghai Research Institute of Acupuncture and Meridian and Huashan Hospital Affiliated to Fudan University from December 2003 to December 2004. Totally 40 SD rats were randomly divided as normal group, sham operation group, model group and electroacupuncture group with 10 in each group. The hypertension model rats were induced with bi-kidney-bi-clip method, then the focal cerebral ischemia-reperfusion rat model was induced by reversible occlusion for a middle cerebral artery with a thread on the stroke prone renovascular hypertensive model rat. While the rats in sham operation group were operated without thread insertion. Shuigou (Du 26), bilateral Neiguan(PC 6) and bilateral Housanli (Zusanli, ST 36) were located according to"Atlas of Experimental Animal Acupoints" made by Hua's. Shuigou (Du26): 1 mm below nasal apex right on the Labium leporinum, be punctured 1 mm obliquely upward; Neiguan (PC 6): at the lateral palm of the forearm3 mm above wrist joint, between ulna and radius, be punctured 1 mm perpendicularly; Housanli (Zusanli, ST 36): under knee joint, 5 mm below the capitulum of fibula, be punctured 7 mm perpendicularly. The skin of Shuigou (Du 26) and the root of right ear, Neiguan (PC 6) and Housanli (Zusanli, ST 36) were connected with electroacupuncture Therapeutic Instrument G6805 with the parameters of continuous wave, 120 times/minute in frequency, 1 mA in intensity for 30 minutes. The treatment was applied once immediately after ischemia operation and again 12 hours after reperfusion. Being killed on 24 hours after reperfusion, the hippocampus of the rats were rapidly picked out. The effect of electroacupuncture on the expression of iNOS mRNA in hippocampus of the rats with cerebral ischemia-reperfusion was detected with fluorescence quantitative reverse transcription polymerase chain reaction (FQ-RT-PCR).MAIN OUTCOME MEASURES: The expression of iNOS mRNA in hippocampus.RESULTS: All 40 SD rats entered the final analysis. Expression of iNOS mRNA in hippocampus: [1] That in model group was significant higher than that in electroacupuncture group {[(4.85±1.29) ×1 000, (3.19±1.38) ×1 000] copy, (t=2.77, P ＜ 0.05)}; [2] That in model group was significant higher than that in sham operation group {[(4.85±1.29) ×1 000, (4.93±2.17)×10] copy, (t=97.38, P ＜ 0.01)}; [3] That in model group was significant higher than that in normal group {[(4.85±1.29) ×1 000, (3.13±1.68) ×10]copy, (t=11.81, P ＜ 0.01)}.CONCLUSION: Electroacupuncture may significantly inhibit the expression of iNOS mRNA in hippocampus and reduce the synthesis of NO to relieve the cerebral ischemia-reperfusion injury.

Narcolepsy is a chronic sleep disorder,and a main cause for excessive daytime sleepiness. It is accompanied by cataplexy,sleep paralysis and sleep hallucinations,collectively known as tetralogy of narcolep-sy. Research progresses in the pathogenesis of narcolepsy are briefly summarized in this article,paving directions for further research. Both the realm of western and Chinese traditional medicine are concerned. Western medicine stated that it′s pathogenesis is closely related to orexin and HLA-DQB1?0602. In addition,recent studies from countries in Western Europe(UK,Finland,and Sweden)have indicated that the use of H1N1 influenza vaccine gives rise to incidence of the narcolepsy as well. From the realm of Chinese medicine,upsetting the balance of Yin-Yang and Yin-Wei are also possible causes attributed to the disease. In the case of child narcolepsy,the con-dition of the patient′s internal organs is also highly concerned.

Objective To explore the role and significance of free radicle in the pathophsiological mechanisms of diabetic cystopathy(DCP).Methods The detrusor strip contraction experiments were performed and observed in the group of type 2 diabetes mellitus(T2DM) rats at different time stages and the control group.The bladder tissue samples was made into homogenate,and the activities of superoxide dismutase(SOD) and the contents of malondialdehyde(MDA) were determined.Results The minimum stretch forces to induce the detrusor contractions in T2DM group were larger than the control group.Compared with the control group,the detrusor contractive frequency was higher in the period of 0 to 16 weeks,but was lower after the 20th week.The maximum detrusor contractive forces in the T2DM group showed a descended tendency with the elapse of the experiment time.In the bladder homogenate of the control group,the activities of SOD was declined after reaching the peak at the stage of 8th week,and then escalated at the stage of 24th week.As for the T2DM group,the activities of SOD became higher in the 4th week,than descended at the stage of 8th and 24th weeks.The contents of MDA in both groups showed descended tendency.In T2DM group,MDA became even lower than the control group in the 4th week and became higher than the control group in the 8th week.The ratio of SOD/ MDA in T2DM group was lower than the control group.In details,the ratio of SOD/MDA in T2DM group rose significantly in the 4th week,while declined in the 8th week.There was a negative correlation between the maximum detrusor contractive force and detrusor contractive frequency,and a positive correlation between the maximum detrusor contractive force and the contents of MDA.Conclusion The destrusor functions are impaired by Diabetes Mellitus.In the initial stage of DCP,the bladder functions are normal,because the detrusor had a high ability to remove the free radicle.In the progression stage of DCP,the bladder functions become decompensation,because the organism is seriously injured by the free radicle.So the impairment by free radicle is one of important mechanisms of destrusor impairment of diabetic cystopathy.

Objective To investigate the expression of hypoxia inducible factor-1?(HIF-1?) and heparanase(HPA),and their relationship during hypoxia in human ovarian cancer cell line SKOV3.Methods SKOV3 cells were incubated in different groups,immucytochemistry was applied to qualitatively assay HPA protein,Western-blot was used to detect the protein expression of HIF-1? and HPA,and mRNA expression was determined by RT-PCR.Results The positive expression of HPA localized in cytoplasma.Western-blot analysis revealed that the protein expression of HIF-1? was significantly increased(P

Objective To investigate the effect of Rho GDP dissociation inhibitor 2 (RhoGDI2) and Bcl-2 in pathogenesis of hypoxic-ischemic brain damage (HIBD).Methods Neonatal 7-day-old Sprague Dawley rats were randomly divided into sham-operation control group,HIBD 6 h group and HIBD 48 h group (n =10 per group).The apoptosis rate of brain cell was measured by flow cytometer and the expression of RhoGDI2 mRNA and Bcl-2 mRNA were detected by Real-time RT-PCR.Results ( 1 ) The ligated cerebral hemisphere of neonatal rats showed obvious edema at 48 h after hypoxia-ischemia.( 2 ) Apoptotic cell appeared at 6 h in HIBD group,the apoptosis rate was ( 1.40 ± 0.12 ) ％.The apoptosis rate obviously increased to (15.86 ±0.98)％ at 48 h after HIBD,which showed a significant increase compared to sham-operation control group ( P ＜ 0.01 ).( 3 ) The expressions of both RhoGDI2 mRNA and Bcl-2 mRNA were 4.12 ±0.74 and 2.55 ± 0.65 respectively in sham-operation control group.In HIBD group,the expressions of both RhoGDI2 mRNA and Bcl-2 mRNA began to decrease at 6 h after HIBD ( 3.19 ± 0.77,1.96 ± 0.36) and decreased furthermore at 48 h after HIBD ( 1.04 ±0.18,1.06 ±0.17 ).The differences of expression levels among three groups were statistically significant (P ＜0.01 ).(4) The expression of RhoGDI2 mRNA positively correlated with the expression of Bcl-2 mRNA ( r =0.831,P ＜ 0.05 ).Conclusion With the emerging of apoptosis after HIBD,the expressions of both RhoGDI2 mRNA and Bcl-2 mRNA are decreased.The imbalance of expression of RhoGDI2 is involved in pathogenesis of HIBD by regulating Bcl-2 expression.