Objective To evaluate the value of 18F-FDG PET/CT in assessing radiosensitivity enhancement by irisquinone (IR) on rabbit xenografted VX2 lung tumor models.Methods Twenty-four tumor-beating rabbits were randomly divided into 3 groups (8 rabbits/group):group A with radiotherapy alone,group B with combined radiotherapy and IR,and group C without radiotherapy (the control group).18F-FDG PET/CT imaging was performed before radiotherapy and 24 h and one week after radiotherapy.The tumor SUVmax on delayed imaging was calculated in all rabbits.Two rabbits in each group were sacrificed after PET/CT imaging.HE staining was used to assess the differences in cancer cells among groups.Paired t test,one-way analysis of variance and Kaplan-Meier analysis were performed to analyze the data using SPSS 13.0.Results Before radiotherapy,the tumor SUVmax of all the 24 rabbits on standard and delayed imaging were 2.200 ± 0.761 and 3.162 ± 0.833 (t =-5.582,P ＜ 0.01).At 24 h post-radiotherapy,the delayed SUVmax of groups A,B and C were 2.614 ± 0.654,2.349 ± 0.869 and 5.663 ± 1.144,respectively.The differences between pre-radiotherapy and 24 h post-radiotherapy were statistically significant in all three groups (t =2.527,3.620,11.011,all P ＜0.05).One week after radiotherapy,the delayed SUVmax of groups A,B and C were 3.625 ± 1.064,3.058 ±0.850 and 7.424 ± 1.751,respectively.The differences among groups A,B and C were statistically significant (tA∶ B =2.652,tA∶C =3.799,tB∶C =4.366,all P ＜0.05).The cancer cells of group B were fewer than those of groups A and C by pathological findings,which was consistent with 18F-FDG PET/CT results.The survival times of groups A,B and C were (62.375 ±4.534),(69.000 ±4.660) and (54.125 ±5.276) d,respectively.Kaplan-Meier survival curves revealed better survival of group B as compared to groups A and C,respectively (Log-rank,x2 =7.355,16.943,both P ＜ 0.01).Conclusion 18 F-FDG PET/CT is able to evaluate the effect of irisquinone on tumor radiosensitivity enhancement.

Objective:To study the inhibitory effect of salidroside on the proliferation of fibroblast-like synoviocytes with rheumatoid arthritis in human(HFLS-RA) induced by tomor necrossi factor-α(TNF-α),and to clarify the molecular mechanism of its control effect on rheumatoid arthritis(RA).Methods:The HFLS-RA were cultured in vitro,then treated with TNF-α and different concentrations of salidroside.The cells were divided into normal control group(0 μg·L-1TNF-α),model control group(10.0 μg·L-1TNF-α)and 12.5,25.0,50.0,and 100.0 μmol·L-1 salidroside groups(10.0 μg·L-1TNF-α+salidroside).The proliferation activity was detected by MTT mehthod;the expression levels of β-catenin,matrix metalloproteinase-7(MMP-7),and Cyclin-D1 in supernatant of the cells were detected by ELISA method;the expression level of β-catenin protein in cells was detected by Western blotting method.Results:Compared with normal control group,the proliferation activity of the HFLS-RA in model control group was significantly increased (P<0.05);compared with model control group,the proliferation activities of the HFLS-RA in 12.5 and 25.0 μmol·L-1 salidroside groups were decreased but there were no significant differences(P>0.05),and the proliferation activities of the HFLS-RA in 50.0 and 100.0 μmol·L-1 salidroside groups were significantly decreased (P<0.05).Compared with normal control group,the expression levels of β-catenin,MMP-7,and Cyclin-D1 in the supernatant of the cells in model control group were increased(P<0.05).Compared with model control group,the expression levels of β-catenin,MMP-7,and Cyclin-D1 in the supernatant of the cells in 12.5 and 25.0 μmol·L-1 salidroside groups were decreased,but there were no significant differences(P>0.05);the expression levels of β-catenin,MMP-7,and Cyclin-D1 in the supernatant of the cells in 50.0 and 100.0 μmol·L-1 salidroside groups were decreased(P<0.05).The Western blotting results showed that the expression level of β-catenin protein in the cell in model control group was higher than that in normal control group(P<0.01);the expression levels of β-catenin protein in the cells in 12.5 and 25.0 μmol·L-1 salidroside groups were lower than that in model control group,but there were no significant differences(P>0.05);the expression levels of β-catenin protein in the cells in 50.0 and 100.0 μmol·L-1 salidroside groups were lower than that in model control group(P<0.05).Conclusion:Salidroside could inhibit the proliferation of HFLS-RA,and its control effect might be related to the regulation of Wnt/β-catenin single pathway.

Objective To investigate the hMOF protein expression in non?small cell lung cancer and explore the relationship between its expres?sion and radiotherapy prognosis. Methods Immunohistochemical staining was used to detect the hMOF expression in 59 cases of non?small cell lung cancer after radiotherapy. The relationship between hMOF expression with clinicopathological and radiation prognosis was analyzed. Results Among the 59 cases of non?small cell lung cancer tissues,there were 30 cases found to be high expression with hMOF. The rate of positive expression of hMOF in non?small cell lung cancer were 50.85%. Clinical stage and hMOF expression were independent predictors for non?small cell lung can?cer. Conclusion The expression of hMOF had a positive correlation with the radiation prognosis in non?small cell lung cancer,which could be used as a prognostic indicator of radiotherapy.

Objective To determine the proportion of CD4+ CD25+ regulatory T (Treg) cells,mRNA expression of the forkhead box protein 3 (Foxp3) gene,and DNA methylation status of the Foxp3 promoter in peripheral CD4+ T cells from patients with Henoch-Sch(o)nlein purpura.Methods Totally,20 inpatients with Henoch-Sch(o)nlein purpura and 20 healthy controls were enrolled from Department of Dermatology,the Second Xiangya Hospital of Central South University between 2015 and 2016,and there were no significant differences in the gender and age between the two groups (both P ＞ 0.05).CD4+ T cells were isolated from the peripheral blood samples of these subjects.Real-time fluorescence-based quantitative PCR was performed to detect the mRNA expression of the Foxp3 gene,flow cytometry to determine the proportion of CD4 + CD25+ Treg cells,and sodium bisulfite sequencing PCR (BSP) to determine the DNA methylation status of the Foxp3 promoter.Statistical analysis was carried out with SPSS16.0 software by using two-sample t test for the comparison between the two groups,and linear correlation analysis for evaluating the correlations of the DNA methylation status of the Foxp3 promoter with clinical severity scores and the proportion of CD4+CD25+ Treg cells.Results Compared with the healthy control group,the Henoch-Sch(o)nlein purpura group showed significantly decreased mRNA expression of the Foxp3 gene in CD4+ T cells (0.380 ± 0.226 vs.1,t =9.503,P ＜ 0.01),proportion of CD4+CD25+ Treg cells (1.668％ ± 0.959％ vs.2.741％ ± 1.131％,t =2.552,P ＜ 0.05),but significantly increased DNA methylation status of the Foxp3 promoter (0.712 ± 0.164 vs.0.453 ± 0.147,t =3.610,P ＜ 0.01).In the Henoch-Sch(o)nlein purpura group,the DNA methylation status of the Foxp3 promoter was negatively correlated with the percentage of CD4+CD25+ Treg cells (r =-0.490,P ＜ 0.05),but positively correlated with the clinical severity scores (r =0.486,P ＜ 0.05).The DNA methylation level of the Foxp3 promoter was significantly higher in the patients with renal impairment than in those without renal impairment (P ＜0.05).Conclusion The patients with Henoch-Sch(o)nlein purpura showed increased DNA methylation status of the Foxp3 promoter in CD4+ T cells,decreased mRNA expression of the Foxp3 gene and proportion of CD4+CD25+ Treg cells,which may be related to the occurrence of Henoch-Sch(o)nlein purpura,and affect disease development and prognosis.

Objective To study the impacts of alcohol dependence on the anticonvulsant effect of diazepam. Meth?ods Kunming mice (n=36) were divided into 3 groups (n=12 in each group), Alcohol Dependence Group(A group), Diaze?pam Group(D group)and Normal Saline Group(N group). A group received an intraperitoneal injection with a 0.2 mL dose of 0.8%alcohol in NS (normal saline) , while both D and N group received an injection with a 0.2 mL dose of NS without alco?hol , twice a day. Mice’s autonomic activities were monitored every day. After 7 days, the electroconvulsive experiment was performed. Both A and D group were given a weight-based dose of 0.05 mL/10 g of 0.05%diazepam via intraperitoneal injec? tion, while N group was given a 0.05 mL/10 g dose of NS. Before administration and after 15, 30, 60 min of administration, the convulsion threshold of each group was measured. Results The count of autonomic activity of mice in A group was less than that of mice in D and N group during the 2nd day to 6th day(P<0.05). On the 1st and 7th day, the difference of the count of autonomic activity of mice between A group and the other two groups was not statistically significant(P>0.05). The convulsion threshold of mice in A group was higher than that of mice in D and N group before administration(P<0.05). Af?ter administration, the convulsion threshold of mice in N group didn’t show statistically significant difference from that of mice before administration(P>0.05). After 15 min of administration, the convulsion threshold of mice in D group was high?er than that of mice in A and N group(P<0.05), while the convulsion threshold of mice in A group was higher than that of mice in N group(P<0.05). After 30 min and 60 min of administration, both the convulsion thresholds of mice in A and D group were higher than that of mice in N group(P<0.05). However, at this point, the difference of the convulsion thresholds of mice between A and D group was not statistically significant(P>0.05). Conclusion Alcohol dependence has anticon?vulsant effect. Alcohol dependence weakens the anticonvulsant effect of diazepam.

A 10-year and 9-month-old female patient presented with skin rashes all over the body,fever and superficial lymphadenectasis for 18 days after an intravenous drip of fosfomycin.Skin examination showed generalized swollen erythema all over the body,whose surfaces were covered with a large number of sticky furfuraceous grey-white scales.Laboratory examination revealed markedly increased levels of alanine aminotransferase and aspartate aminotransferase,as well as an increased number of eosinophils.Histopathological examination of skin lesions showed infiltration of scattered lymphocytes in the superficial dermis,as well as around skin appendages.Immunohistochemical study demonstrated that the infiltrating lymphocytes mainly included T lymphocytes,and no atypical cells were observed.The patient was diagnosed with druginduced hypersensitivity syndrome.After the treatment with intravenous glucocorticoids,immunoglobulin and oral cyclosporine,favorable therapeutic effects were achieved.

Objective To explore the application effects of blending learning mode which is based on SPOC in preventive medicine teaching. Methods 92 students of Grade 2013 majoring in medical imag-ing were divided into two classes. 47 students in the first class adopted LBL teaching method. Another class was experimental group, teaching the remaining 45 students by blending learning mode based on SPOC method. Analyses and assessments were done by course examinations and questionnaires. Results The experimental groups were better than the control groups not only in the average score of synthetic scores (t=5.068, P=0.000) but also in the 80-89 and 90-100 number distribution (Z=3.713, P=0.000). The question-naires showed that 72.6％students of the experimental group accepted blending learning mode which was based on SPOC. Conclusion Ability of explorative thinking, independent learning and effect of teaching can be achieved by blending learning model which is based on SPOC.

Objective To investigate the clinical features and prognosis of Kaposi varicelliform eruption with severe complications. Methods The clinical data of one child with Kaposi varicelliform eruption with severe complications was retrospectively analyzed. The related literatures were reviewed. Results A 5-month-old boy presented with recurrent rash on the head and face for 3 months and aggravated for 3 days. The skin lesions showed a characteristic of typical dome-shaped blisters with hemorrhagic crusting. At admission, the boy suffered with severe hypoproteinemia, hypocalcemia, and electrolyte disorder. The hypocalcemia was aggravated gradually. On the fifth day of admission, the boy had fever, convulsions, and tachycardia. Blood culture showed methicillin-resistant Staphylococcus aureus (MASA) infection. The diagnosis of sepsis was confirmed. At that very day, the boy started to have coagulopathy, so Fusidic and Vancomycin for anti-infection, Acyclovir for antivirus, intravenous infusion immunoglobulin, albumin, cryoprecipitate, plasma and calcium gluconate were administered, supplied with albumin and blood coagulation factor. The boy's condition gradually became stable and discharged on the 19th day after admission. Conclusions When Kaposi varicelliform eruption is complicated with hypoproteinemia and hypocalcemia, the critical illness is indicated. Clinicians should be alerted to the existence of sepsis, coagulation disorders, even septic shock and disseminated intravascular coagulation.

Objective To explore the clinical value of adaptive statistical iterative reconstruction(ASIR)combined with automatic tube current modulation in low dose scan of chest CT.Methods 80 patients who underwent chest CT scan were randomly divided into four groups,with a noise index(NI)of 14,16,18,and 20,respectively.Automatic tube current modulation technique for chest CT scan was adopted for all patients.The standard dose group,with a NI of 14,was reconstructed with FBP.While the low-dose groups,with a NI of 16,18 and 20,were reconstructed with four ASIR levels(20% ASIR,40% ASIR,60% ASIR and 80% ASIR) in each group.The volume CT dose index(CTDIvol),dose length product(DLP)and effective dose(ED)were recorded of the four groups.The signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)were calculated of the different reconstruction groups. Two radiologists with more than five years of work experience blindly scored the subjective image quality.Results Effective dose of the four groups with different NI were(3.29 ± 1.21)mSv,(3.10 ± 1.07)mSv,(2.20 ± 0.82)mSv and(1.97 ± 1.21)mSv,respectively. In all the reconstruction groups,when NI was constant,the greater the ASIR,the lower the SD.When ASIR percentage was constant, the SD was increased and the SNR was reduced along with NI rising up.When the parameters were set as NI 18 and ASIR 60%,the SD would be smaller and SNR would be higher than that of a standard dose group.In aspect of the scores from subjective image quality evaluation,there was no significant difference(P> 0.05).The average ED was decreased by about 33.2% when compared to the standard dose group.Conclusion Combining automatic tube current modulation with ASIR has a certain clinical practicality.When the NI is set at 18 and ASIR is 60%,the image quality can be optimal for not only satisfying the requirements of clinical diagnosis, but also reducing radiation dose in chest CT scanning.

Lipedema is secondary to local fat deposition, a disease characterized by the symmetric thickening of lower limbs, mostly occurs in women, especially in adolescence and pregnancy. In its early stage, it could be easily confused with lymphedema. Extensive literature review on primary fat edema in recent years, as well as a summary of the clinical symptoms and signs and diagnosis and treatment of lipedema were conducted, so as to provide a useful reference for clinicians.