Objective To study the effects of 125I seeds irradiation on apoptosis and cell cycle of CL187 colon cancer cells. Methods In vitro cultured human CL187 colon cancer cells were randomly divided into 4 groups:Control group,Irradiation groups under 2,5 and 10 Gy respectively,for which the activity of the seeds was determined at 9.25?104 MBq,and the initial dose to be 2.77 cGy/h.All the cells were collected 48 hours after irradiation.The apoptosis were detected by using double staining method with annexin and propidium iodide(PI),and the cell cycle by using PI staining method. Results The apoptosis rates were 13.74%?1.63%,46.27%?3.82%,32.58%?3.61% respectively in 2 Gy,5 Gy,and 10Gy groups,significantly higher than that of control group(1.67%?0.19%,q=7.594,P

[Objective]To establish a novel noninvasive fluorescent animal model for endometriosis in vitro and in vivo.[Methods]Adenovirus encoding enhancing green fluorescent protein(Ad-eGFP)was used to transfect endometrial glandular cells and stromal cells(cells transfection and injection,Method No.1),and fragments(tissues transfection and injection,Method No.2).Transfection efficiencies were compared between the two methods in vitro.Then GFP transfected glandular cells and stromal cells suspension were injected into nude mice subcutaneously(Method No.1),taking Method No.2 as a comparison.In vivo observation last for 25 days,and positive rates and duration times of fluorescent lesions were calculated.Histological examination was used to confirmed lesion formation.[Results]On the fifth day after injection,lesion positive rate of Method No.1 was 88.9%,which was statistically significantly higher than that of Method No.2(22.2%),P=0.015＜0.05.The fluorescent positive duration of Method No.1 and No.2 were 12 ± 8 days and 7±4 days.The structures of lesions were all identified as human original endometrium by histological examination,including HE staining and immunofluoresceney.[Conclusion]Noninvasive animal model of endometriosis can be built up by subcutaneously injection of Ad-EGFP transfected endometrial glandular cells and stromal cells suspension with higher positive rate and longer observation time

Objective To evaluate the effect of low-dose colonic CT scanning in image quality and lesion revealing with different noise idex.Methods Model group:in order to find the optimal scanning parameter range,small simulated polyps in pig colon was prepared and mA was modulated by regulating noise index.Images were reprocessed with CT colonography and Raysum reconstructions.Image quality and the lesion revealing situation were evaluated and scored based on both reconstructive and axial images.The study of patient group was prospective and continuous.All positive cases were comfirmed by biopsy or surgery pathology.Two groups of patients were enrolled.First group(39 cases from January 2007 to June 2007):patients were divided into three sub-groups randomly(15 cages with NI=10,13 cases with NI:13,11 cases with NI=16),while NI was not changed with position.Second group(32 cases from Jury 2007 to January 2008):patients were scanned and NI was changed with different position(NI=10,20).The average X-ray radiation values of two patient groups were compared with standard values.All data were processed with rank sum tesL Results First group:when NI=10,the average scores of axial and constructive images were 4.2 and 2.4 respectively,when NI=13,those were 3.2 and 2.5 respectively,When NI=16.those were 2.9 and 2.7 respectively.and the average CTDlw were 17.51,12.90 and 5.94 mGy respectively.When NI increased,the average scores of axial decreased(H=20.01,P＜0.01),the average scores of constructive images did not changed(H=0.81,P＞0.05).Second group:when NI=10,the average scores of axial and constructive images were respectively 3.6 and 2.3,when NI=20,those were 2.2 and 2.3 respectively,and the average CTDIw was 11.63 mGy.When NI increased from 10 to 20,the average scores of axial decreased(H=20.84,P＜0.01),the average scores of constructive images did not decreased(H=0.29,P＞0.05).In the first group,the average CTDIw wag reduced by 35.0%,52.1%and 77.9%respectively when NI was 10,13 and 16.In the second group,the average CTDIw Was reduced by 56.8%.Conclusions Auto-mA low-dose CT scanning could reduce X-ray radiation obviously,while not affecting image quality.

Objective To investigate the correlation of microembolic signals (MES) and outcome in patients with acute ischemic stroke.Methods The patients with acute ischemic stroke were enrolled in the study.The MES of middle cerebral artery was monitored dynamically using transcranial color Doppler ultrasound.The early lesions of ischemic stroke were evaluated by MRI.The National Institutes of Health Stroke Scale (NIHSS) was used to evaluate neurological deficits.The modified Rankin scale was used to evaluate the outcome,and the stroke recurrence was recorded.Results A total of 135 patients with acute ischemic stroke were enrolled,in which,33 were cardiogenic cerebral embolism,49 were large artery atherosclerotic stroke,24 were small arterial occlusive stroke,and 29 were other clear causes or cryptogenic stroke.Multivariate logistic regression analysis showed that coronary heart disease (odds ratio [OR],5.862,95％ confidence interval [CI] 2.008-17.114; P =0.000) was the independent risk factor for positive MES within 48 hours after stroke onset,while the history of antithrombotic treatment (OR 0.376,95％ CI 0.141-0.998; P =0.045) was its independent protective factor.In addition,coronary heart disease (OR 4.879,95％ CI 1.257-18.939; P =0.033),hypertension (OR 4.958,95％ CI 1.029-23.882; P =0.030),and diabetes (OR 3.659,95％ CI 1.027-13.034; P =0.050) were the independent risk factors for positive MES within 1 week after stroke onset.The NIHSS scores of the patients of the positive MES at baseline and 1 week and the clinical outcome at 3 months had no significant differences with the patients of negative MES,however,stroke recurrence and deaths increased significantly (P =0.019).Conclusions MES within 48 hours of onset was not associated with the outcome in patients with acute ischemic stroke at 3 months,however,the incidence of endpoint events such as recurrence and death was significantly higher in patients of positive MES within 3 months.

Objective To investigate the predictors of systemic inflammatory response syndrome (SIRS) in patients with acute ischemic stroke. Methods The patients with acute ischemic stroke admitted to hospital from January 2010 to April 2014 were enroled. The demographics, vascular risk factors, baseline clinical data, and laboratory tests in both groups were colected. Flow cytometry was used to analyze the peripheral blood T helper cel (Th) subgroup. Double antibody sandwich enzyme-linked immunosorbent assay was used to detect the levels of peripheral blood interferon-γ (IFN-γ) and interleukin-4 (IL-4). Results A total of 143 patients with acute ischemic stroke were enroled, including 56 in a SIRS group and 87 in a non-SIRS group. Univariate analysis showed that there were significant differences in the history of hypertension, history of stroke, baseline systolic blood pressure, low-density lipoprotein cholesterol level, National Institutes of Health Stroke Scale (NIHSS) score, percentage of Th1 cels, and IFN-γ concentration in patients of both groups (al P < 0. 05). Multivariate logistic regression analysis showed that the NIHSS score ≥6 (odds ratio [ OR] 2. 40, 95% confidence interval [ CI] 1. 24 - 5. 15, P = 0. 008), decreased percentage of Th1 cels (OR 2. 81, 95% CI 1. 51 - 6. 83, P = 0. 013), and decreased IFN-γ concentration (OR 4. 63, 95% CI 1. 01 - 9. 72, P = 0. 004) were the independent predictive factors for occurring SIRS in patients with acute ischemic stroke. Conclusions Severe neurological deficit, decreased percentage of Th1 cels or decreased IFN-γ level may increase the risk of acute ischemic stroke patients with SIRS.

Objective To investigate the relationship between the right-to-left shunt(RLS)detected with contrast-enhanced transcranial Doppler (c-TCD) and recurrent stroke in patients with cryptogenic stroke.Methods The consecutive patients w ith ischemic stroke w ere enrol ed. The patients w ith cryptogenic stroke w ere screened according to the TOAST criteria. They w ere divided into either a RLS positive group or a RLS negative group according to the c-TCD findings, and then they w ere fol ow ed up for a period of one year. They w ere also divided into a recurrent group and a non-recurrent group according to w hether they had recurrence or not. Results A total of 118 patients w ith cryptogenic ischemic stroke w ere enrol ed, including 46 in the RLS positive group, 72 in the RLS negative group, 10 in the recurrent group, and 108 in the non-recurrent group. There w ere no significant differences in demographic and baseline data betw een the RLS negative group and the RLS positive group. There w ere significant differences in RLS positive rate (7/10 vs.39/108; P=0.046) and proportion of patients with server RLS (2/10 vs.1/108; P=0.019) betw een the recurrent group and the non-recurrent group. Multivariate logistic regression analysis show ed that the positive RLS w as an independent predictor of recurrent stroke (odds ratio 4.896, 95% confidence interval 1.135-21.120;P=0.033). Conclusions The positive RLS may be an independent risk factor for the recurrence in patients w ith cryptogenic ischemic stroke.

Objective To understand the clinical nutritional status and malnutrition risk factors of Parkinson's disease (PD) patients and construct their risk scoring system.Methods A total of 221 patients with PD admitted to our hospital from January 2015 to January 2019 were enrolled. The nutritional status of the patients was assessed by Mini Nutrition Assessment (MNA), and according to the MNA scores, these patients were divided into well-nourished groups (n=176) and malnourished group (including patients having malnutrition and malnutrition risk,n=45). Single factor analysis and Logistic regression analysis were used to analyze the risk factors; their scoring systems were constructed and Hosmer-Lemeshow goodness of fit test was used. Accuracy and discrimination of evaluation scoring systems were evaluated by area under receiver operating characteristic (ROC) curve.Results A total of 45 patients (20.36％) had malnutrition or risk of malnutrition. Multivariate regression analysis suggested that the course of disease≥9 years, motor symptoms (unified PD rating scale Ⅲ scores≥54), Hoehn-Yahr (H-Y) staging≥4, daily levodopa equivalent dose≥600 mg, scores of non-motor symptom scale (NMSS) scores≥101, and quality of life (39-item PD questionnaire scores≥81) were independent risk factors for malnutrition in PD patients (P<0.05). The constructed risk scoring system scored from 0 to 30, and Hosmer-Lemeshow goodness of fit test were:χ2=6.259,P=0.618; the area under ROC curve was0.830 (95％CI: 0.801-0.860); when the predicted score was 14, Yoden index was the largest (0.517), and the sensitivity and specificity were 75.70％ and 76.00％, respectively.Conclusion sPD patients have a high risk of malnutrition or malnutrition. The risk scoring system based on risk factors has high predictive ability and discriminating ability, and can be used as an important tool for malnutrition risk assessment in PD patients.

Objective:To explore the influencing factors for pulmonary complications of patients with Parkinson's disease (PD) after deep brain stimulation (DBS), and to construct a nomogram model for predicting pulmonary complications after DBS.Methods:Two hundred and seventy-two patients with PD accepted DBS, admitted to our hospital from March 2015 to December 2019, were chosen in our study; they were divided into pulmonary complication group ( n=56) and non-pulmonary complication group ( n=216). The clinical data of patients from the two groups were compared retrospectively. Multivariate Logistic regression was used to analyze the risk factors for pulmonary complications of patients with PD after DBS, and a nomogram model was established to predict the risk of pulmonary complications; receiver operating characteristic (ROC) curve was used to analyze the prediction performance of the model. Results:As compared with non-pulmonary complication group, the pulmonary complication group had significantly higher percentages of patients with history of pulmonary disease, preoperative albumin<35 g/L, preoperative forced expiratory volume in 1 s (FEV1)/forced vital capacity (FVC)<60%, operation time≥180 min, and age≥70 years, and significantly lower Parkinson's disease sleep scale (PDSS) scores, unified Parkinson's disease rating scale Ⅲ (UPDRS Ⅲ) scores, and preoperative albumin level, and statistically longer postoperative hospital stays ( P<0.05). Multivariate Logistic regression analysis results showed that history of pulmonary disease ( OR=4.230, 95%CI: 2.035-8.207), preoperative albumin<35 g/L ( OR=6.159, 95%CI: 2.570-5.091), preoperative FEV1/FVC<60% ( OR=31.771, 95%CI: 6.702-66.412), operation time≥180 min ( OR=3.550, 95%CI: 2.261-10.065), age≥70 years ( OR=3.714, 95%CI: 1.451-4.827), and PDSS scores ( OR=1.017, 95%CI: 1.351-13.880) were the independent risk factors for pulmonary complications of patients with PD after DBS. Nomogram model established by using the above indicators showed that area under the curve for predicting pulmonary complications of patients with PD after DBS was 0.841 ( 95%CI: 0.774-0.904, P=0.000), with sensitivity of 84.03% and specificity of 75.06%. Conclusion:PD patients with history of pulmonary disease, preoperative albumin<35 g/L, preoperative FEV1/FVC<60%, operation time≥180 min, age≥70 years, and low PDSS scores are trend to have pulmonary complications after DBS; the nomogram model based on the above variables is highly effective in predicting the risk of postoperative pulmonary complications.

Objective To summarize the nursing care for one successful haploidentical allogeneic bone marrow transplantation (haplo-BMT) for one patient with severe aplastic anemia type-Ⅱ (SAA-Ⅱ). The patient accepted an umbilical cord blood transfusion sequentially combined with the second haplo-BMT after an engraftment failure of the first haplo-BMT. The experience of nursing care will be discussed and shared for patients with a second haplo-BMT. Methods The comprehensive nursing cares were utilized during haplo-BMT, it included preventive measures for secondary infections, closely control of side effects, promptly nursing intervention for gastrointestinal mucositis, hemorrhagic cystitis and epilepsy, psychological nursing for appeasing emotional variations, and addition of intravenous indwelling needle if necessary. Results The patient achieved a successful stem cell engraftment and survived a long-term granulopenia (granulocytes＜0.1×109/L) which lasted for 52 days with a recovery of varied complications. Conclusion The comprehensive nursing care can reduce the risk for secondary infections and other complications, it shed a new light on second allogeneic bone marrow transplantation for complicated patients

To develop a quality control checklist for the prevention and control of coronavirus disease 2019 （COVID-19） in fever clinic and isolation ward of the general hospital and to assess its application. Based on the relevant prevention and control plans and technical guidelines for COVID-19，Delphi method was used to identity items for evaluation，and a quality control checklist for the prevention and control of COVID-19 in the fever clinic and isolation ward was developed in Sir Run Run Shaw Hospital. The checklists included 8 dimensions and 32 items for fever clinic，7 dimensions and 27 items for the isolation ward. The appointed inspectors conducted daily quality control for each shift with this checklist. The expert authority coefficient was 0.88，the mean of the importance of each index in the quality control table was not less than 4.8，and the coefficient of variation was not more than 0.07. During the entire February 2020，8 problems were found and rectified on-the-spot with the application of the checklist. Quality inspection rate was 100% in both isolation wards and fever clinic. The compliance rate and accuracy rate of hand hygiene were 100%; the correct rate of wearing and removing protective equipment increased from 96% to 100%. During the same period，a total of 1915 patients were admitted to the fever clinic，including 191 suspected patients （all were isolated in the hospital，3 were confirmed）. There were no medical staff infected with COVID-19，no cross infection of patients and their families in the hospital. A quality control checklist for the prevention and control of COVID-19 has been developed and applied in the isolation wards and fever clinic，which plays an important role in preventing nosocomial infection.
COVID-19 ; Checklist ; Fever ; Hospitals, General ; Humans ; SARS-CoV-2