Objective To study the clinical value of anti-ribosomal P0 protein antibodies (anti-P0). Methods Line immuno-assay and immunoblotting methods were used to detect anti-P0 and rRNP antibodies of 49 SEE patients and 61 patients with other rheumatic diseases.The expressions of anti-P0 were compared with those of rRNP antibodies.Possible relations between anti-P0 and clinical features and other antibodies in SLE were explored.Results 36.7%and 6.1% of SEE patients showed positive anti-P0 and rRNP antibodies respectively.Anti-P0 was always negative in patients with other rheumatic diseases (P＜0.01).Among SLE pa tients,incidence of skin rash was 77.8%(35.5%) ff anti-P0 was found to be positive (negative) (P＜0.05). Besides,for patients with positive and negative anti-P0,the chance of positive anti-SmD1 was 61.1% and 19.4% respectively (P＜0.01).Sensitiviy of anti-P0 for SLE diagnosis was 36.73% with specificity and positive predictive value as high as 100%,and 66.30% as the negative predictive value.Conclusion Sera anti-P0 is highly specific for SLE and it is associated with the occurence of rash and the expression of anti-StuD 1 anti bodies in SEE.

Objective To characterize the internal structures of fluconazole-loaded cubic phase gels and establish a method for determination of fluconazole.Methods Glycerol monooleate( GMO) was used as the liquid crystal material to prepare the fluconazole loaded cubic phase gels.Polarizing light microscopy ( PLM ) and small-angle X-ray scattering ( SAXS) were used to confirm their internal structures and establish an HPLC method for determination of their content. Results Cubic phase gels were the dark field under PLM,SAXS showed that the blank cubic phase gels had two single peaks:q1(0.832 09 nm-1 ) and q2 (1.017 nm-1 ) while the fluconazole-loaded cubic phase gels had two single peaks:q1(0.818 88 nm-1)and q2(0.950 95 nm-1).Under the selected HPLC, the linearity within the range of 20-500 μg/ml was good.Conclusion PLM and SAXS are reliable for characterization of cubic phase gels.The HPLC method can be used in quality control and evaluation of this enema.

Objective To explore the effect of postweaning enriched environment and citalopram treatment during juvenility on the behaviour of male rats exposed to early adverse stress. Methods The newborn pups were randomly divided into maternal separation group (MS) and non-maternal separation group (NMS). Offspring were weaned on PND22 and housed in same-rearing groups under either standard or enriched conditions or citalopram treatment until adulthood. All of them were examined by sucrose consumption test, forced swimming test (FST) and morris water maze test (MWZ). Results (1) MS had significantly less consumption of sucrose intake (ml/g)(0.013 ±0.006, n = 10), compared with the following five groups (MS + EE (0.023 ±0.012, n = 8); MS + Drug (0.027 ±0.012, n = 9); NMS (0.022 ± 0. 007, n=11);NMS + EE (0.023 ±0.007, n = 7); NMS + Drug (0.032 ±0.011),n=7)), NMS + Drug had significantly increased the radio of sucrose consumption on NMS group. (2)The immobility in FST were longer in MS-experienced groups (MS (140. 19 ± 37.01) s, n = 8); MS + EE (129.41 ±29.50)s, n = 6) ;NMS + Drug (128.83 ±26. 11)s, n = 6)) than three non-MS groups (NMS (96.28 ±35.63)s,n = 7); NMS + EE (94.17 ±24. 87)s, n = 6) ;NMS + Drug (93.00 ±34. 21)s, n = 6)). (3) MS had shorter time and shorter percentage of distance spent in target quadrant in MWZ,citalopram treatment markedly improved spatial memory on NMS group. Conclusion Maternal separation applied in newborn rats induces a broad spectrum of behavioral changes reminiscent of depressive symptoms in humans, which might be reversed to some extent by EE and antidepressant in young adults.

Objective To investigate the effects of human amniotic membrane on the survival of the crossboundary perforator flap in rats through distal subcutaneous implantation.Methods From February,2016 to December,2016,38 SD rats weighing 270-300 g were randomly divided into experimental group and control group (n=19).A three-territory perforator flap (3 cm× 10 cm) with the iliac artery as the pedicel elevated on the right dorsum of the rats.Experiment group,a section of amnion was sutured to the distal subcutaneous of the flap and then the flap was sutured back to its donor site.Control group,after the flap elevated,directly sutured back to its donor site.The blood flow of the pedicel were detected by laser Doppler flowmetry at the day before surgery,1 day after surgery,3 and 7 days after surgery,with 3 rats in every group.When the rats were anesthetized,biopsies were taken from the choke area Ⅱ at the day before surgery,3 and 7 days after surgery,with 9 rats in every group.When the rats were anesthetized,HE was used to compare the diameter size of the artery and vein at the same site.At day 7,measure the survival area of the flap,and 3 of them observe the vessel of the flap by lead oxide-gelatine technique.Results The survival rate of the experimental group and the control group after 7 days were (89.09±4.23)％ and (74.56-±5.59)％ respectively,the experimental group was significantly higher than that of the control group (t=5.48,P=0.00).X-ray showed that 7 days after operation,the pedicel of iliac artery in the experimental group was bigger than that in the control group.The blood flow detection showed that the blood flow of the experimental group was higher than that of the control group (t=2.39,3.06;P=0.03,0.00,respectively) at day 1 and day 3 after surgery.Hematoxylin eosin staining showed that arteriovenous tube diameter at the Choke Ⅱ were gradually increased on the day3 and day7 after surgery in both group,but the experimental group diameter expanded multiple was higher than that of control group (t=3.52,3.50;P=0.02,0.02,respectively).Conclusion Human Amnion subcutaneous embedding may improve the blood flow of the vascular pedicle,expand the microvascular at Choke area Ⅱ,improve microcirculation,as a result to promote the survival of cross perforator flap,while the mechanism is needed to understanding.

Objective To investigate the effects of DMOG on the microcirculation of the choke-area and the survival of the cross-boundary flap in rats via tail vein injection.Methods Rats with ischemic three-territory perforator flaps on the dorsum were treated with DMOG at a dosage of 40 mg/kg body weight via tail vein injection at 1 day before surgery(day-1),the time of surgery(day 0),1 day after surgery(day 1),2 days after surgery(day 2) and 3 days after surgery(day 3).Control group received sterile saline at the same time points and same dosage via tail vein injection.① Draw materials from the choke-area at day 1,day 3 and day 7,HE stain was used to compare the diameter size of the artery and vein at the same site.② Western blotting to check the expression of PCNA and HIF-1α,ELISA to detect the content of PCNA,HIF-1α,SDF-1α and VEGF at day 7.③At day 7,measure the survival area of the flap and observe the vessel of the flap by lead oxide-gelatine technique.Results ① There was a greater survival rate of (96.3 ± 5.1)％ in the treatment group than in the control group with (73.9 ± 5.8)％ at day 7 (P ＜ 0.05).② The diameter size of the arterioles and venules were dilated in both groups until postoperative days 7.But the treatment group was more expanded than the control group at day 3(2.20 ± 0.26 vs.1.50 ± 0.20,P ＜ 0.05) and day 7(3.67 ± 0.35 vs.2.03 ± 0.15,P ＜ 0.05).③ The skin expression of PCNA and HIF-1α in the treatment group were greater than the control group(P ＜ 0.05) at day 7.④ The content of skin PCNA in the treatment group and control group were(8.95 ± 0.71) ng/mg and (4.15 ± 0.72) ng/mg,HIF-1α were(5.04 ± 0.50)ng/mg and (2.98 ± 0.29) ng/mg,SDF-1α were (2.91 ± 0.61) ng/mg and (1.39 ± 0.62) ng/mg,and VEGF were(2.17 ± 0.41) ng/mg and (0.95 ± 0.44) ng/mg,respectively.The treatment group was greater than the control group (P ＜ 0.05).Conclusion DMOG can improve the microcirculation of the choke area,and then increase the survival of the perforator skin flaps in rats via tail vein injection.

Problem-based Learning (PBL) teaching aims to develop students' ability to ask questions, analyze and solve problems so as to improve their autonomous learning and life-long learning ability. This study attempts to embed PBL teaching into the intercultural communication course of Traditional Chinese Medicine (TCM) English. Feedbacks from students through assessment questionnaires and interviews, as well as the author's reflections based on the teaching are included in this paper. Suggestions on the practical application of PBL teaching in the course are also given in the end.

Objective: To evaluate the dynamic prevalence of dental fluorosis of children and levels of fluoride in drinking water after improvement of water in Xi an City, to provide scientific basis for water fluoridation improvement. Methods: A total of 35 fluorosis endemic villages were selected as fixed monitor sites in 2014-2018, the ways of water improvement were surveyed, water fluorine content were detected and the prevalence of dental fluorosis in children aged 8 to 12 years were examined. Results: Rates of excess fluoride in drinking water from 2014 to 2018 were 22.86%, 14.29%,11.43%, 11.43% and 8.57%, the difference were significant(χ2=16.44, P<0.01).The dental fluorosis detection rates of children aged 8 to 12 years were 20.89%,18.22%,17.46%,18.13% and 16.76% in 2014-2018 which showed a obvious descending trend by year(χ2=10.02, P<0.01). The detection rate of dental fluorosis in children aged 8 and 9 years showed a decreasing trend by year(χ2=6.53, 4.54, P<0.05).The difference of total rate of dental fluorisis,rate of mild cases rate of moderate-to-severe cases were statistically between the villages without qualified water and the villages with normal fluorine water(χ2=179.22, 167.93,10.35, P<0.01). The rate of detection in the villages with the water fluorine exceed standard in 2014-2018 showed a declining trend year by year(χ2=28.50, P<0.01). The detection rate were significant different across water improvement methods(χ2=197.76, P<0.01). Detection rate of dental fluorosis decreased from 2014 to 2018 in the areas with municipal water supply showed a decreasing after year(χ2=12.16, P<0.01). Conclusion The improvement of municipal water supply shows significant effects on water fluorosis control, the detection rate of water fluoride and children s dental fluorosis in some villages with the other ways of water improvement are still higher than expected, the continuously monitor of fluoride content in water and dental fluorosis in children should be strengthened.

Objective To explore the cooperative mechanism of hospital research management and ethics review.Methods Through the analysis of current ethical conditions,as well as the relationship between hospital research management and ethical review,study on how to integrate them during the management of scientific research project.Results Research management and ethical review have different emphasis from different perspectives,however,both of them serve for research projects which makes inseparable connections.Conclusions Hospital research management and ethical review can be synergistic,according to which the management of scientific research projects will be more reasonable and scientific.

Objective To analyze the pattern of recurrence risk and investigate the association between pathological staging and recurrence risk in patients with esophageal squamous cell carcinoma (ESCC) treated with neoadjuvant chemoradiotherapy (CRT). Methods Clinical data of 174 patients with advanced thoracic ESCC treated with neoadjuvant CRT between 2002 and 2015 were retrospectively analyzed. All patients received preoperative concurrent platinum-based chemotherapy with conformal radiotherapy (40-50. 4 Gy,conventional fractionation) combined with surgery. Kaplan-Meier method was utilized to analyze the survival,the log-rank test was conducted to compare the differences between groups,and the Cox regression model was used for multivariate analysis. Results The median follow-up time was 53. 9 months. A total of 44. 8% of patients achieved pathological complete response, and 59 patients ( 33. 9%) recurred after neoadjuvent CRT.The postoperative recurrence rate was 22. 2% for patients with pathological stage 0/I,38. 7% for stageⅡand 68. 2% for stageⅢ(P=0. 000).The 5-year recurrence-free survival (RFS) rates were 74. 7%, 61. 4% and 20. 9% for patients with pathological stage 0/Ⅰ,ⅡandⅢ,respectively (P=0. 000).In total,20. 5% of patients with pathological stage 0/I orⅡrecurred after postoperative 3 years, whereas all patients with pathological stageⅢrecurred within postoperative 2 years. Multivariate analysis demonstrated that age,clinical TNM staging,chemotherapy regimen,and pathological response after CRT were independent prognostic factors affecting the RFS ( P= 0. 027, 0. 047, 0. 010, 0. 005). Conclusions Pathological stage is significantly correlated with the recurrence risk in ESCC patients after neoadjuvant CRT.Risk-based surveillance strategies can be defined according to different pathologial staging.

Objective To investigate the relationship between treatment-related lymphopenia and pathologic complete response (pCR) to neoadjuvant chemoradiotherapy (CRT) in patients with esophageal squamous cell carcinoma (ESCC).Methods Clinical data of 220 ESCC patients treated with neoadjuvant CRT followed by surgery between 2002 and 2016 were retrospectively analyzed.Absolute lymphocyte count was determined before and at 1 month after neoadjuvant CRT.Treatment-related lymphopenia was graded using Common Terminology Criteria for Adverse Events (CTCAE,4.0 version).The relationship between lymphopenia,pCR and recurrence was evaluated by chi-square test and Cox's regression model.Results Ninety-five patients (43.2％) achieved a pCR after neoadjuvant CRT and 71 cases (32.3％) recurred postoperatively.During neoadjuvant CRT,the incidence rates of grade 0,1,2,3,and 4 lymphopenia were 1.8％,6.8％,31.4％,38.2％,and 21.8％,respectively.Patients with grade 4 lymphopenia had a significantly lower pCR rate than those with grade 0-3 lymphopenia (22.9％ vs.48.8％,P=0.001).Moreover,grade 4 lymphopenia was significantly associated with a higher risk of recurrence (45.8％ vs.28.5％,P=0.023).Multivariate analysis identified that primary tumor length,tumor location and radiation dose were the independent predictors for grade 4 lymphopenia during neoadjuvant CRT (P=0.013,0.001,0.002).Conclusions The incidence of grade 4 lymphopenia in ESCC patients undergoing neoadjuvant CRT is correlated with a low pCR rate and a high risk of recurrence.Lymphopenia can be used as an economic and effective predictor for pCR.