AIM:Bioactive constituents were expected to be obtained from the roots of Angelica morri Hayata. METHOD:They were extracted with 95% alcohol and isolated by using column chromatography and recrystallization methods. The structures were elucidated by means of physico-chemical data and UV,IR,1HNMR, 13CNMR,and EIMS. The inhibitory effect on the constriction of rat aortic rings was induced by K+ or Ca2+. RESULT:3′S-(-)-hamaudol,3′S-(-)-Ο-acetylhamaudol,3′R-(+)-hamaudol,and (±)-hamaudol were isolated from the pieces of Radix Angelica Morri. The inhibitory rate of 3′S-(-)-Ο-acetylhamaudol and (±)-hamaudol on the above pharmacologic model appears the relation of quantity response. CONCLUSION:All the above compounds were found in this species for the first time,and(±)-hamaudol is a new. One of effect mechanisms of 3′S-(-)-Ο-acetylhamaudol and (±)-hamaudol diluted aorta could contribute to be inhibiting Ca2+ influx of vascular smooth muscle.

Objective To compare the different response of dermal fibroblasts from normal and scar-ring skin to cytokines,extracellular matrix and collagen promoter.Methods Human dermal fibroblast cul-ture was established by explanting tissue specimens from normal and scarring skin.Cellular proliferative ac-tivities were determined with BrdU-ELISA after treatment with IFN-?A,hIFN-?,TNF?and laminin for24hours.Reporter genes driven by collagen promoters were analyzed in two types of dermal fibroblasts trans-fected with consensus constructs48hours later.Results Dermal fibroblasts from normal and scarring skins showed different proliferative responses to IFN-?A,hIFN-?,TNF?and laminin,with stimulatory effects pre-sented in normal fibroblasts treated with IFN-?A,hIFN-?,TNF?and laminin,inhibitory effects presented in scarring fibroblasts treated with IFN-?A and laminin,and reduced or resistant effects presented in scar-ring fibroblasts to hIFN-?and TNF?.The5'flanking sequences(-2483~+42bp,-1448~+42bp)from human?1(Ⅰ)procollagen gene had lower activity of promoter in scarring fibroblasts compared with that in normal fibroblasts.Conclusion Compared with normal dermal fibroblasts,scarring dermal fibroblasts have reduced response or are resistant to some cytokines.Lower collagen production capacity is anticipated since collagen promoter activity is low in scarring dermal fibroblasts.The pathological mechanism of scarring for-mation might be related to the change of responses of dermal fibroblasts.

objective To investigate the association between two single nucleotide polymorphisma (SNP)rsl0053538 and r810515746 in Tim-3(T cell immunoglobulin domain and mucin domain protein 3) gene promoter region and child allergic asthma in Chinese Han population from Hubei province by using faro-ily-based association study．Methods Cenotypes of 2 SNPs(rs10053538 and rs10515746)within Tim-3 gene in 118 allergic flsthma nuclear pedigrees were analyzed by restriction fragment length polymorphism and DNA sequencing．Two family-based designs，transmission disequilibrium test(TDT)and haplotype-based haplotype relaive risk(HRR)were employed for the data analysis．Haplotypes and their frequencies in 118 nuclear pedigrees were established and analyzed by Transmit software．Results The HRR analysis showed no increased risks of contracting the disease owing to rs10053538 and rs10515746 polymorphisma of Tim-3 promoter in our 118 tries(X2=2．430，P>0．05；x2=1．368，P>O．05)．N0 transmission disequilibrium was found from heterozygous parents onto patients in our 118 tries analyzed by TDT(x2=2．042，P>0．05；X2=0．750，P>0．05)．The haplotype analysis also showed no biased transmission of rs10053538 and rs10515746 haplotypes from parents to the affected offsprings(P>0．05)．Condusion The two SNPs rs10053538 and rs10515746 in Tim-3 gene promoter region are not associated with susceptibility to child allergic asthma in Chinese Han population from Hubei province．

Radiation-induced lung injury is a common complication of thoracic cancer radiotherapy.A lot of animal experiments and clinical studies have shown that ionizing radiation-induced lung injury is a complex process regulated by a variety of cytokines.The transcription factors including nuclear factor κB,MAPK and activator protein-1 are involved in radiation-induced lung injury by regulating the synthesis of a variety ofinflammatory proteins.The flavonoids play a role in radiological protection by blocking the pathway of nuclear factor kB and activator protein-1.

Objective To explore an accurate,objective and simple method for barrel distortion correction and lesion area measurement by assistance of computer.Methods The software of Panaroma tool was employed to correct barrel distortion of endoscopy and Image J to measure lesion size and manage the relative measurement error.Computed measurement in vitro of lesion area was established,firstly,by identification of correction factor of Panorama tool to minimize measurement error; then by determination of influence of object distance change between the lens and the image.This measurement was used on patients with gastric ulcer for focal area.Results were compared with those of traditional method.Results Number of 0.1was determined to be the correction factor for barrel distortion of endoscopy.Prior to the correction of the barrel distortion,the relative error of measurement gradually increased with the increasing distance between endoscopy and the image.However,different object distances did not exert influence on the relative measurement error when barrel distortion was corrected by Panaroma tool ( P =0.141 ).A total of 50 foci of gastric ulcer were measured,results from combinational treatment of Panorama tool and Image J showed the areas (35.0 ± 5.0) mm2 were significantly larger than those determined by traditional method [ ( 29.1 ± 4.1 ) mm2,P =0.000 ],with a correlation coefficient of 0.988.Conclusion Computed endoscopic lesion measurement is a relatively accurate,objective and simple method to determine the area of gastric lesions.

BACKGROUND: Quantitative pharmaco-electroencephalography (QPEEG) can reflect cerebral cortical function, which can be certainly affected by general anesthetics. Anesthesia depth has good correlation with the anesthetic dosage, so if we can find out the areas of brain and band of QPEEG which is relative to the anesthetic dosage, the band may be taken as the index to reflect the depth of anesthesia. OBJECTIVE: To observe the effects of propofol on the alpha2-band (α2- band) of QPEEG in rabbits. DESIGN: A randomized control animal experiment. SETTING: Jiangsu Provincial Key Laboratory of Anesthesiology, Xuzhou Medical College. MATERIALS: The experiment was carried out in the animal laboratory of Xuzhou Medical College from October 2004 to August 2005. Thirtysix healthy adult rabbits were randomly divided into propofol 2.5, 5 and 10 mg/kg groups with 12 rabbits in each, including 6 were used to observe the change of percentage of each band power of QPEEG, and the other 6 were used to observe the latency and duration for the disappearance of righting reflex in the rabbits. METHODS: The experiment was performed between 14:00-17:00 every day. Rabbits in the three groups were treated with intravenous injection of propofol of 2.5, 5 and 10 mg/kg respectively within 30 seconds. ① The conscious rabbits were fixed onto the platform in a prone osition, and the QPEEG was recorded with the method of power spectrum analysis before administration and at 20, 30, 40, 50, 60, 70, 80, 90, 100 and 110 s and 2, 5, 10, 15, 20 and 30 minutes after administration respectively. The sampling time for each time point was 5 s. ② The latency and duration for the disappearance of righting reflex in the rabbits were recorded. RESULTS: ll the 36 rabbits were involved in the analysis of esults. ① After the intravenous injection of propofol, the righting reflexes all disappeared within 1 minute. The greater the dosage, the shorter the latency and the longer the duration r=0.79, P ＜ 0.01). ② Compared with before administration, propofol of 2.5 mg/kg had no obvious influence on the percentage of α2-band power (P ＞ 0.05); The percentages of α2-band power in the brain areas were increased after administration in the propofol 5 mg/kg group (P ＜ 0.05); Except that there were no significant differences in the left and right parietal regions between the propofol 10 mg/kg group and the propofol 5 mg/kg group, the percentages of α2-band power in the other brain areas in the propofol 10 mg/kg group were decreased as compared with those before administration and those in the other two groups (P ＜ 0.05), and the changes above were more obvious in the frontal and temporal regions.CONCLUSION: The influence of propofol on the percentage of α2-band power of QPEEG is biphasic, it is suggested that α2-band would be an index to reflect the anesthesia depth of propofol.

Objective To compare the effects of different doses of dexmedetomidine in inhibition of cardiovascular response to endotracheal intubation. Methods One hundred and twenty ASA Ⅰ or Ⅱ patients, aged 18-60 yr, weighing 45-80 kg, scheduled for upper abdominal surgery, were randomly assigned to one of 4 groups (n = 30 each): control group (group C); low, median and high doses of dexmedetomidine groups (group M1-3) .In group M1-3, 15 min before anesthesia induction, dexmedetomidine 0.25, 0.5 and 1.0 μg/kg were infused over 15 min respectively, while normal saline 15 ml was given instead of dexmedetomidine in group C. After anesthesia induction, tracheal intubation was performed when the BIS value ≤ 60 and it was maintained for 5 s. The patients were mechanically ventilated. BP and HR were recorded before infusion of dexmedetomidine (T0), before intubation (T1), immediately after intubation (T2) and at 1, 3, 5 and 10 min after intubation (T3-6). Venous blood samples were also taken at the same time to measure the plasma concentrations of epinephrine (E) and norepinephrine (NE). Results Compared with T0, HR was significantly decreased at T1 in group M1-3, BP was significantly increased at T1 in group M3, and the plasma concentrations of E and NE were significantly increased at T4-6 in group C and M1(P ＜0.05). BP and HR were significantly lower at T2, while higher at T3-5 in group C and M1than at T1 (P ＜ 0.05). BP at T1-6 was significantly higher in group M3 than in group M2 (P ＜ 0.05). Conclusion When the dose of dexmedetomidine reaches 0.5 μg/kg, it may effectively inhibit the stress reaction to noxious stimulation.

Objective To study the effect of bel-2 siRNA on apoptosis of HL-60 cells.Methods bcl-2 siRNA was synthesized in vitro transcription with silencer siRNA construction kit.The synthesized siRNA was transfected into HL-60 cells with Amine siPORT transfection.We used MTT flow cytometer and hoechst 33258 flourescence stainning t0 evaluate cell proliferation and apoptosis. Results.Bcl-2 siRNA could partially inhibit the growth of HL-60 cells.After incubated with bcl-2 siRNAl for 48 hours,HL-60 cells exhibited morphologic characteristic of apoptosis including chromatin condensation,crescents formation and nuclear fragmentation.Conclusion Effective bcl-2 siRNA can induce apoptosis and inhibit cell proliferation.

BACKGROUND:Embryonic stem cel s have the capacity of multi-differentiation potential, and have been utilized for the therapy of acute liver injury. However, the migration and proliferation of embryonic stem cel s after transplantation remains not wel characterized.
OBJECTIVE:To track the transplanted embryonic stem cel s in repairing acute liver injury by bioluminescence imaging technology.
METHODS:Murine embryonic stem cel s (D3) were transducted with a construct composed of firefly luciferase, monomeric red fluorescence protein and herpes simplex virus truncated thymidine kinase triple fusion reporter genes by lentivirus system. Stable D3 embryonic stem cel s integrating three report genes were screened. The undifferentiated embryonic stem cel s or differentiated embryonic stem cel s from the 6-day-old embryoid body were transplanted into acute liver injury model of SV129 mouse through spleen, and the transplanted cel s were monitored by bioluminescence imaging technology.
RESULTS AND CONCLUSION:Reverse transcription PCR results showed that the expression level of Oct-4 and Nanog was not affected in embryonic stem cel s transducted with triple fusion reporter gene compared with wild-type embryonic stem cel s. The migration process of transplanted cel s was visualized by bioluminescence imaging technology. Teratomas were found in both triple fusion-embryonic stem cel s treatment group and triple fusion-embryoid body cel s treatment group at liver, and the teratoma formation could be suppressed by ganciclovir administration because ganciclovir can react with herpes simplex virus truncated thymidine kinase and trigger cel necrosis process. Histological analysis showed that teratomas comprised tissues from al three germ layers. These results demonstrate that triple gene fusion does not affect differentiation potential of embryonic stem cel s and it is risky to utilize embryonic stem cel s for cel therapy, because it affects repair of liver injury. The therapy strategy requires further improvement and real-time visualizing of embryonic stem cel s in vivo is absolutely necessary.

Objective:To analyze the difference of immune damage between patients with severe fever with thrombocytopenia syndrome (SFTS) and patients with tsutsugamushi disease.Methods:A prospective case-control study was conducted. Thirty-one patients with SFTS and 16 patients with tsutsugamushi disease admitted to the First Affiliated Hospital of Anhui Medical University from October 2014 to June 2017 were enrolled, and another 10 healthy people were enrolled as control. The counts of CD4 + and CD8 + T lymphocytes, and the proportion of CD3 + T lymphocytes, natural kill cells (NK cells), B lymphocytes and plasma cells were detected by flow cytometry. Thirty-four inflammatory mediators were determined by a multiplex Luminex? system synchronously. The differences of lymphocytes and cytokines between the two groups were compared. Results:The proportion of CD3 + T lymphocytes, the counts of CD4 + and CD8 + T lymphocytes in SFTS patients were significantly lower than those in patients with tsutsugamushi disease ( t values were 4.860, 9.411 and 5.030, respectively, all P < 0.01), and the proportion of NK cells and B lymphocytes were significantly higher than those in patients with tsutsugamushi disease ( t values were 2.344 and 5.896, respectively, both P < 0.05). The proportion of plasma cells in peripheral blood of SFTS patients was (7.7±1.2)%, the highest proportion of plasma cells in severe SFTS patients was up to 30%, and all patients showed λ monoclonal cell group in plasma cells. No plasma cells were detected in tsutsugamushi disease patients. The abnormal expressions of interleukin-1 receptor antibody (IL-1RA), interleukin (IL-6, IL-15, IL-10, IL-8), tumor necrosis factor-α (TNF-α), γ-interferon (IFN-γ), granulocyte colony-stimulating factor (G-CSF), eosinophil chemotactic factor (Eotaxin), IFN-γ-inducible protein-10 (IP-10), monocyte chemoattractant protein-1 (MCP-1), macrophage inflammatory protein (MIP-1α, MIP-1β), platelet-derived growth factor (PDGF-AA, PDGF-AB/BB), activated regulatory normal T cells and secretion factors (RANTES) were found in patients with SFTS and tsutsugamushi disease. The levels of IL-1RA, IL-6, IL-15, IL-10, TNF-α, IFN-γ, G-CSF, Eotaxin, IL-8, IP-10, MCP-1 and MIP-1α in SFTS patients were significantly higher than those in patients with tsutsugamushi disease ( Z values were 2.312, 2.447, 3.660, 5.444, 1.965, 2.402, 2.402, 2.997, 3.525, 2.481, 3.817, and 2.211, respectively, all P < 0.05), while PDGF-AA, PDGF-AB/BB and RANTES were significantly lower than those in patients with tsutsugamushi disease ( Z values were 3.728, 2.514, 2.649, respectively, all P < 0.05). Correlation analysis showed that RANTES, PDGF-AA and PDGF-AB/BB levels were significantly positively correlated with the level of platelet in patients with SFTS and tsutsugamushi disease (SFTS: r values were 0.223, 0.365, 0.330; tsutsugamushi disease: r values were 0.263, 0.632, 0.407, respectively, all P < 0.05). In SFTS patients, compared with the survival group ( n = 21), the CD3 + and CD4 + T lymphocytes in the death group ( n = 10) significantly decreased, while the plasma cells significantly increased ( t values were 3.980, 3.314 and 26.692, respectively, all P < 0.01); IL-1RA, IL-6, IL-15, IL-10, TNF-α, IFN-γ, G-CSF, Eotaxin, IL-8, IP-10, MCP-1, MIP-1α and MIP-1β significantly increased, while PDGF-AA, PDGF-AB/BB and RANTES significantly decreased ( Z values were 3.930, 4.014, 2.832, 3.592, 2.958, 3.508, 2.578, 3.254, 4.270, 3.465, 2.663, 3.085, 3.107, 3.639, 3.043 and 3.825, respectively, all P < 0.05). Conclusions:The immune function was impaired more seriously in SFTS patients than that in tsutsugamushi disease patients. Excessive humoral immunity and apoptosis of T lymphocytes are closely related to the death in SFTS patients. The detection of CD4 cells, plasma cells and proinflammatory and anti-inflammatory cytokines (e.g. IL-6, IL-10) had great clinical significance for the differentiation and illness evaluation in disease with SFTS or tsutsugamushi disease.