Objective To investigate the protective effect of theaflavins on thymus injury caused by total body irradiation (TBI).Methods Twenty-five C57BL/6 mice were randomly divided into 5 groups:control group,4 Gy TBI group,4 Gy TBI + 25 mg/kg theaflavins group,4 Gy TBI + 50 mg/kg theaflavins group and 4 Gy TBI + 100 mg/kg theaflavins group.Thymus index and total number of thymocytes were detected at the 14th d post-irradiation to determine the optimal dose of theaflavins.According to this optimal dose,32 C57BL/6 mice were randomly divided into 4 groups:control group,theaflavins group,4 Gy TBI group and 4 Gy TBI + theaflavins group.Thymus histomorphology,CD4CD8 T cell subsets,and reactive oxygen species (ROS) in thymocytes were examined at the 14th d post-irradiation.Results The irradiated thymus exhibited decreased thymus index and total number of thymocytes (P ＜ 0.05),aberrant histomorphology and T cell subsets (P ＜ 0.05),and increased ROS level in thymocytes (P ＜ 0.05).Compared with 4 Gy TBI group,the thymus index and total number of thymocytes were significantly increased in 4 Gy TBI + 50 mg/kg theaflavins group (P ＜ 0.05).The total number of thymocytes was significantly higher in 4 Gy TBI + 50 mg/kg theaflavins group than that in 4 Gy TBI + 25 mg/kg theaflavins group (P ＜ 0.05).Therefore,50 mg/kg theaflavins was chosen as the optimal dose for subsequent experiments.Moreover,the aberrant histomorphology of irradiated thymus was alleviated by theaflavins.A decline in the percentage of CD4-CD8-T cells and an elevation of CD4+CD8-and CD4+CD8+ T cells were found in irradiated mice administered with theaflavins (P ＜ 0.05).Compared with 4 Gy TBI group,the ROS level was significantly decreased in 4 Gy TBI + theaflavins group (P ＜ 0.05).Conclusion Theaflavins exhibits a protective effect on radiation-induced thymus injury.

Objective To investigate the protective effect of hydrogen-rich water (HRW) on radiation-induced hematopoietic stem and progenitor cells (HSPCs) injury.Methods Totally 32 C57BL/6 mice were randomly divided into four groups with 8 mice in each group,including control,HRW,radiation and radiation + HRW.Mice in HRW and radiation + HRW groups received 0.5 ml hydrogen-rich water per day by intragastric administration 5 min before irradiation until 7 d post-irradiation.Mice in other groups received 0.5 ml distilled water.Mice in radiation and radiation + HRW group were irradiated with 2 Gy of total body irradiation.Bone marrow cells were isolated at 15 d post-irradiation,and LSK cells were examined for the percentage of hematopoietic stem and progenitor cells,the ability of colony formation and reconstitution,reactive oxygen species (ROS) levels and cell apoptosis.Results Compared with radiation group,the percentages of hematopoietic progenitor cells and LSK cells,colony number of bone marrow cells were significantly increased in radiation + HRW group (t =-4.935,-7.898,5.488,P ＜ 0.05).An elevation of donor chimerism was also found in recipient mice administered HRW after competitive bone marrow transplantation (t =-12.769,P ＜ 0.05).Compared with radiation group,the ROS levels and cell apoptosis in LSK cells were significantly decreased (t =4.380,3.954,P ＜ 0.05).Conclusions Hydrogen-rich water exhibited a protective effect on radiation-induced HSPCs injury.

Objective To observe the protective effect of anthocyanin on irradiation induced bone marrow c-kit positive cell injury, and further explore its possible mechanism. Methods Mouse bone marrow c-kit positive cells were collected by cell sorting method. There were 2 groups: control group and anthocyanin group, which were sub-divided into three groups and received 0 Gy, 1 Gy and 4 Gy irradiation respectively. The control group was added 700μL cell suspension and an equal volume of serum-free hematopoietic stem/progenitor cell culture medium. The 2 × 10-5 mol/L anthocyanin was co-cultured with mouse bone marrow c-kit positive cells of anthocyanin group half an hour before irradiation exposure, then cells were cultured for 18 hours under the conventional culture conditions (37℃,5%CO2). Mouse c-kit positive cell viability was measured by bioluminescence, and which was reflected by relative light units (RLU). The ability of colony-forming units was reflected by CFU-GM. The reactive oxygen species (ROS) level and mean fluorescence intensity (MFI) ofγ-H2AX were detected by flow cytometry. Results Compared to un-irradiated control group, the cell viability and the number of CFU-GM were decreased significantly, while the ROS level and MFI ofγ-H2AX were increased in c-kit positive cells irradiated with 1 Gy and 4 Gy (P<0.05). Compared to 1 Gy and 4 Gy irradiation groups, c-kit positive cell viability and the number of CFU-GM were increased, the ROS level and MFI of γ-H2AX were decreased in anthocyanin group (P < 0.05). Conclusion Anthocyanin exhibits a promising protective effect on radiation-induced bone marrow c-kit positive cell injury, which may be related to the alleviating ROS and DNA damage in bone marrow cells.

Objective To investigate the expression changes and significance of Pdlim2 in the glomerular podocyte of hyperlipidemic rats.Methods Forty-five individuals of SD rats were divided randomly into 3 groups (n =15 in each group).The control group was fed with normal diet.The high fat group was fed with high fat diet.The simvastatin group was fed with high fat diet plus with simvastatin gavage (10 mg· kg-1 · d-1).Five rats were sampled randomly from each group at week 4,6,and 10 and the urinary protein excretion,the concentration of serum cholesterol,and the concentration of low density lipoprotein cholestorol were determined,the glomerular podocyte damage in rats was detected by electron microscope,the expression of Pdlim2 protein was determined by immunohistochemistry and by Western blotting.Results The levels of serum cholesterol and low density lipoprotein cholestorol increased significantly in high fat group and simvastatin group at week 4 compared to that in control group(P ＜ 0.05),and the level in simvastatin group was significantly decreased compared with that in high fat group(P ＜ 0.05).The urinary protein levels of high fat group and simvastatin group were significantly higher than that in control group at week 10,and the level in simvastatin group was significantly decreased in high fat group,there was significant difference in each group of comparison(P ＜ 0.05).Podocyte injury was detected by electronic microscopy in high fat group at week 4,and the injury became more serious as the treatment time increased.Podocyte injury in the simvastatin group was significantly less than that in the high fat group and the control group at week 10.The positive staining of Pdlim2 was mainly in the glomeruli and the expression of Pdlim2 of the high fat group was lower than the simvastatin group,and both were lower than the control group at week 10.The expression of Pdlim2 protein of high fat group was lower than that in the control group since week 4(P ＜0.05).The expression of Pdlim2 protein of high fat group was lower than that in the simvastatin group (P＜0.05),and both were lower than the control group at week 10(P＜0.05).Conclusions Hypedipidemia induces podocyte injury before urinary protein,which is suggested to be associated with the decrease of Pdlim2 protein.Simvastatin reduces podocyte toot processes of high fat induced fusion,which may be through protecting the expression of glomerular Pdlim2.

Objective To observe the effect of sesamol on the hematopoietic system in mice exposed to 4 Gy irradiation. Method Twenty C 57 BL/6 mice were randomly divided into control group, sesamol group, irradiated group and irradiated+sesamol group (n=5). Mice of control and sesamol group received sham irradiation, and the rest exposed to 4 Gy total body irradiation, dose rate 1.01 Gy/min. Mice in sesamol group and irradiated+sesamol group received a dose of 10 mg/kg sesamol administered by gavage every day for 7 days after irradiation exposure. Mice of other two groups were treated with vehicle solution. After 4 Gy irradiation 7 day, the peripheral bloods were collected. The levels of colony forming units-granulocyte-macrophage (CFU-GM) were detected. Results Compared to irradiation group, the level of WBC、cell count of BMNCs and CFU-GM significantly decreased in the irradiated mice, decreased in the irradiated mice (P<0.05). Compared to irradiation group, cell count of BMNCs and CFU-GM in the irradiated+sesamol group increased significantly (P<0.05). Conclusion Sesamol has a certain impact on the radiation-induced changes in hematopoietic system. The mechanism need to be further explored.

Objective To explore the incidence ,clinical and neuroimaging features, possible risk factors and outcome of central nervous system (CNS) complications one year after hapilo-matched non-ablative hematopoietic stem cells transplantation. Methods The medical records of 36 consecutive patients who underwent hapilo-matched non-ablative hematopoietic stem cells transplantation for malignant and nonmalignant hematologic diseases between February 2004 and May 2009 were reviewed. Results CNS complications occurred in six (16.7 %) patients. Four of the six patients (66.7 %) died. Cerebral infarction occurred in three (8.3 %) patients. Cerebral softenness occurred in two (5.6 %) patients. Cerebral hemarrage occurred in 1 (2.8 %) patient. Epilepsy occurred in 1 (2.8 %) patient. The CNS complications occurred between 12 days and 286 days after stem cells transplantation. The age illness status and death rate were statistically different compared to patients without CNS complications (P ＜0.05). Conclusion The incidence and mortality of CNS complications are higher in those who underwent hapilo-matched non-ablative hematopoietic stem cells transplantation,which will make impacts on the patients' life quality and outcome.The illness status and eldly are probably the risk factors.

Objective To study the radioprotective effect of indole-3-carbinol (I3C) acid condensation products.Methods Cell colony formation assay was used to determine cell survival rate,and Western Blot assay was employed to measure protein expression.Results Seven kinds of the I3C acid condensation products showed different radioprotective effect on normal fibrous epithelial cells 184A1,among which 24 h pre-treatment of CTET (1 μmol/L),LTET (1 μmol/L),HI-IM (1 μmol/L) and 3,3'-diindoly methane (DIM) (0.3 μmol/L) showed significant increase of cell survival rate following irradiation with γ-ray,and the difficence was statistically significant (P＜0.05,P＜0.01).However,CT (1 μmol/L),LTr-1 (1 μmol/L) and ICZ (1 μmol/L) showed no effect on cell survival rate caused by radiation (P＞0.05).Furthermore,CTET,LTET,HI-IM and DIM activated the phosphorylation of ATM,BRCA1 and NBS1 proteins.HI-IM significantly decreased radiation-caused cell death and apoptosis.Conclusions CTET,LTET,HI-IM,and DIM can significantly reduce the radiosensitivity in 184A1 cells,and the mechanism may be related to the regulation of DNA damage and the repair of protein phosphorylation.

The difficulty in the participant recruitment is the common question in acupuncture clinical trial study. The existing recruitment of clinical trial is most applicable for the clinical trial of medicines. Because the intervention of acupuncture clinical trial is different from that of medicines, characterized as the specialties in "theory, principle, acupoints, technique", it is very necessary to develop the strategy on the participant recruitment in acupuncture clinical trial. The free community medical consultation is one of the important means of recruitment. In the paper, by taking the participant recruitment of acupuncture clinical trial on chronic stable angina pectoris as the example, the discussion is given on the strategy on the recruitment of free community medical consultation in the aspects of feasible investigation of recruitment approach, recruitment plan, participant screening, etc. The revisiting after the free community medical consultation is the important approach to the improvement of successful recruitment. This strategy on the recruitment of free community medical consultation is highly practical and improves the successful rate and compliance of the participant recruitment. Hence, this strategy deserves to be promoted.
Acupuncture Therapy ; Clinical Trials as Topic ; standards ; Humans ; Personnel Selection ; standards ; Research Design ; standards

Objective To investigate the epidemiological characteristics of outpatients exposed to rabies and to analyze the post-exposure prophylaxis in Weinan City in 2017 in order to provide a scientific basis for the prevention of rabies. Methods Clinical data of all outpatients with exposure to rabies in Wei-nan were collected. Ecxcel 2007 was used for data entry and SPSS13. 0 for Chi-square test. Results A total of 32 094 cases were reported with an annual exposure rate of 625. 64/100 000 in Weinan in 2017. Animal bites mainly occurred in spring and summer,accounting for 47. 47% of the total cases in 2017. There were statistically differences in exposure rate among different age groups (χ2=15. 858,P=0. 003). Farmers ac-counted for the largest proportion of the outpatients exposed to rabies (52. 34% ). Among 31 435 outpatients, 28 181(89. 65% ) received wound care and rabies vaccination. The vaccination rate of rabies immunoglobu-lin for patients with gradeⅢ exposure was 46. 93%. Conclusion Comprehensive measures with focuses on compulsory vaccination for domestic dogs and adoption of stray dogs should be implemented to prevent human rabies. Meanwhile,health education rabieson prevention and control should also be strengthened.

Objective: To explore the effects of FOXO4 D-retro-inverso peptide (FOXO4-DRI) on the radiosensitivity of non-small cell lung cancer (NSCLC) cells. Methods: To detect the effect of FOXO4-DRI on NSCLC cells, H460 and A549 human lung cancer cells were divided into four groups, including untreated control, FOXO4-DRI, γ-ray irradiation and FOXO4-DRI + γ-ray groups. A sigle dose rate of 0.99 Gy γ-rays was used for radiation. H460 cells were administered with 6 μmol/L FOXO4-DRI and A549 cells were adiminstered with 30 μmol/L FOXO4-DRI at 10 min before radiation. Cell viability and survival were detected by CCK-8 assay and colony formation assay, respectively. Cell migration was detected by wound healing assay. Apoptosis and cell cycle arrest were detected with flow cytometry. Results: FOXO4-DRI inhibited growth of H460 and A549 cells (t=1.06-50.75, P<0.05), and decreased cell mobility (t=33.37-139.10, P<0.05) and colony formation (t=5.20-93.48, P<0.05). FOXO4-DRI also increased apoptosis (t=2.95-42.00, P<0.05) and caused a cell cycle arrest at G₀/G₁ phase accompanied with a decreased proportion of G₂/M phase (t=3.50-31.59, P<0.05). Furthermore, FOXO4-DRI increased radiosensitivity of both H460 cells and A549 cells (t=2.94-23.40, P<0.05), caused a Further Decrease of radiation-mediated mobility (t=5.25, 7.56, P<0.05) and colony formation (t=8.43-34.00, P<0.05) and a more increase of radiation-induced apoptosis (t=9.20-11.52, P<0.05). FOXO4-DRI also further decreased the proportion of G₂/M phase cells but increased the proportion of S phase cells (t=3.85-17.62, P<0.05). Conclusion FOXO4-DRI increases radiosensitivity of NSCLC cells by inducing apoptosis and suppressing cell proliferation.