Medical workers are the main designers and participants of clinical trials.In this consideration,popularization of good clinical practice (GCP)knowledge among them can improve their execution of trials,standardize basic clinical trial requirements,protect legitimate rights and health/safety of the subjects,and make the trial results more reliable.These objectives,if accomplished,will upgrade the clinical trials competency of medical institutions in China,and encourage healthy growth of the medical and pharmaceutical industry.The paper probed into the occupation qualification system of clinical trial workers and their supervision mechanism,inclusion of GCP into the continuing education system.

Objective: To observe the curative effect of image guided radiation therapy on orbital inflammatory pseudotumors. Methods:28 cases of orbital inflammatory pseudotumors in our hospital from September 2009 to September 2012 were treated with image guided radiation therapy (IGRT) with a single dose of 2GY/F, 1F/d and a total dose of 20GY/10F. Radiation therapy was completed in 2 weeks at 10 times. Results: 23 patients (82%) were completely cured and 3 patients (11%) were partly cured with the total efficiency of 93%. Conclusion:After IGRT treatment, the symptoms in the patients like eye pain, exophthalmos, eye movement disorders and other symptoms were disappeared. IGRT could relieve pain, improve the cure rate and reduce recurrence.

Small animal PET is a quantitative imaging technique that can noninvasive and dynamically image the distribution of positron-labeled radiopharmaceuticals in vivo,therefore representing a new means of providing information for drug development and evaluation.This article reviews the fundamental basis of PET imaging and their application in preclinical drug discovery and development.

Objective To investigate the satisfaction of clinicians on clinical research associates (CRA)and its influencing factors,for the purpose of providing rationalized proposals on education of CRAs.Methods 141 clinicians were randomly sampled from tertiary hospital for questionnaire survey,using the 5-point Likert scale.The survey covers 4 levels,i.e.,the work attitude,professional knowledge and ability,communication skills,and project management capabilities,as well as 14 dimensions.Data processing and statistics were analyzed using SPSS 15.0 software.The attribute characteristics of the investigation subjects were analyzed using x2 of the contingency table,along with analysis of its correlation with the general satisfaction on CRAs.Results The mean values of the 12 indicators range 2.28 to 3.75,with low satisfaction in general.Among these indicators,satisfaction of the service attitude of the CRA,and of their familiarity with the pilot program and CRF completion axe the highest,respectively,74.04％and 61.70％.Satisfaction of the rest 10 indicators falls below 50.00％.The chisquare analysis showed no association between satisfaction and gender,education,job titles.The satisfaction is different(P＜0.05)between those trained and those not,while there exists a significant differences(P＜0.01)between those participating in different number of tests.Conclusion Clinicians have a low satisfaction on CRAs.It is recommended to strengthen the training,establish a CRA occupation certification system,and to strengthen the clinicians' emphasis and competency of clinical trials.These actions will normalize the industry of clinical trials and improve the level of clinical trials in China.

Rhubarb anthraquinone derivatives (AQs) have been documented to have both therapeutic and toxic effect on liver and kidney, leading to a complex puzzle to assess their benefits and risks. In this study, the tissue distributions of AQs in SD rats after orally administrated extracts of raw and prepared rhubarb were examined whether they undergo different uptake. The total rhubarb extract (14.49 g x kg(-1) of body weight per day od, counted on the quantity of crude material) was administrated orally for 12 weeks. The concentrations of the AQs in different tissues were quantified by liquid chromatography-tandem mass spectrometry (LC-MS/MS). The five major AQs, aloe-emodin, rhein, emodin, chrysophynol and physcion, could all be detected in the liver, kidney and spleen, while only rhein, aloe-emodin and emodin reached the quantitative limit. The tissue concentrations of AQs in raw rhubarb group were higher than that in steamed rhubarb group with rhein > emodin > aloe-emodin in the same tissue. On the whole, the tissue distribution of rhein was higher than that of emodin and aloe-emodin in liver, spleen and kidney. AQs could not be detected in those tissues after drug withdraw for 4 weeks, which suggested scarcely any accumulative toxicity of rhubarb. The result indicated that raw rhubarb had more tissue toxicity than steamed rhubarb and rhein may be one of the major poisonous ingredients. The results were concordant with the traditional Chinese medicine theory of toxicity-attenuating effect of processing.

Objectives This study aimed at investigating the cellular mechanism of isoproterenol (ISO) on delayed afterdepolarizations (DADs) and triggered activity (TA) of the noninfarcted myocardium in the myocardial infarcted rabbit model.Methods Rabbits with the left anterior descending coronary artery occlusion were prepared and recovered for 8 wk (healed myocardial infarction, HMI). Myocytes were isolated from regions of the noninfarcted left ventricular free wall. ISO was added to cellular surface by perfusion way. Action potentials and ion currents were recorded with whole-cell patch clamp. Results The results showed that treatment with ISO induced more DADs and TA events in HMI myocytes. Iti and ICa-L of myocytes treated with ISO were increased significantly compared with HMI cells, which contributed to DADs-related triggered arrhythmia. Conclusions The results suggested that more arrhythmia events of DADs and TA developed in myocytes with ISO treatment. The underlying mechanism was associated with the augment of Iu and calcium influxing.

Objective To discuss the relationship between food habits and hyperhomocysteinemia (HHcy), and provide dietary intervention basis for the aged in prevention and cure of HHcy. Methods Participants coming from the cohort of the Beijing Longitudinal Study of Aging in 2009, were asked to complete a food habits questionnaire and underwent laboratory examinations, including total homocysteine and blood biochemical item. According to effects of food on metabolism of Hcy, the commonly used foods were divided into three kinds: (1)Rich in VitB12 or folic acid or betaine:chicken or duck egg, pork or beef or lamb, bean products and vegetables.(2)Rich in VitB6: fish or shrimp, milk and chicken or duck. (3)Rich in antioxidant: fresh fruit, tea and coffee. According to the intake of frequency, each food was divided into"often eat"and"not often eat"or"not eating". HHcy was defined as>15μmol/L, Logistic regression analysis was used to analyze the association between dietary intake and HHcy, after adjusting confounding factors. Results The prevalence of HHcy was 61.9%(902/1458);accordi ng to the results, for the patients who do not often eat or not eat food rich in VitB12 or folic acid or betaine (chicken or duck egg, bean products and pork or beef or lamb) and VitB6 (fish or shrimp and milk), the risk of HHcy was significantly increased. After adjusting for multiple factors, the risk was still significantly increased, P<0.05. Conclusions Not often eating chicken or duck egg(less than once a day), bean products(less than once a week), fish or shrimp(less than twice a month) and not eating pork or beef or lamb or milk, were independtly associated with the increasing risk of HHcy in elderly people.

Objective To investigate the prevalence and risk factors of H-type hypertension among middle-aged and elderly people in Beijing community. Methods A cross-sectional study by recruiting 1 458 middle-aged and elderly people from a cohort of the "Beijing Longitudinal Study of Aging" in 2009 was conducted. All participants were asked to complete a standardized questionnaire, physical examination and laboratory examinations. Hyperhomocysteinemia was defined as homocysteine (Hcy) > 15 μmol/L, and H- type hypertension was defined as having hypertension and hyperhomocysteinemia simultaneously. The prevalence of H-type hypertension was estimated by using the results of 2000 Beijing population census to weight the data. Multivariate Logistic regression analysis was preformed to estimate the associated factors of H-type hypertension. Results The age was (69.48 ± 8.09) years, and the distribution of Hcy was skewed with the median of 16.56 μmol/L. After weight, the prevalence of hyperhomocysteinemia was 57.20% (834/1 458), and the prevalence of H-type hypertension was 35.32% (515/1 458), accounting for 59.47% (515/866) in patients with hypertension. The ageing, male, hyperuricemia, estimated glomerular filtration rate (eGFR) and insufficiency of fishes/ shrimps were independent risk factors of H-type hypertension ( OR = 2.30, 1.04, 1.02, 0.95 and 0.67; 95% CI 1.54-3.44, 1.02-1.06, 1.04-1.06, 0.94-0.97 and 0.46-0.97; P＜0.01 or＜0.05). Conclusions The proportion of H-type hypertension is high in the middle-aged and elderly people in Beijing community. Lowering uric acid, protection of renal function and intake sufficient fishes and shrimps might prevent and control H-type hypertension.

Objective To describe and compare the attitude and actual participation of decision-making regarding nursing care of patients with breast cancer, and to identify the related factors. Methods To investigate 480 cases of inpatients with breast cancer in 3 Grade ⅢA hospitals in Wuhan through questionnaire and self-designed general information questionnaire. Results There were significant differences (χ2=28.3, P<0.01) between the attitude and actual participation of decision making regarding of nursing care. The results of Logistic regression analysis showed that patients with higher education level (B=1.574, P=0.002), less children (B=-2.716, P<0.01) and higher income (B=0.323, P<0.01) , had a more active attitude to participate decision making; patients who were younger (B=-6.001, P=0.015), with higher education level (B=1.643, P=0.000), shorter duration of disease (B=-2.413, P=0.022), and lower degree of TNM stage (B=0.618, P=0.012), actually participated more often in decision making. Conclusions The actual participation was inconsistent with the attitude of decision-making regarding nursing care among patients with breast cancer. And patients′ demographic characters were related to their participation of decision making, which suggested that nurses should make a comprehensive assessment of willingness and capacity of patients′decision-making participation, identify the facilitators and barriers, and take measures to support patients to take an active part in the decision making to improve the quality of nursing care.

Objective To observe the relationship between the peripheral blood IFN-γ secretion level and prognosis in the patients with early stage of acute cerebral hemorrhage.Methods Sixty-six inpatients with acute intracerebral hemorhage in the emergency department of this hospital from July 2015 to August 2016 were selected as the experimental group,and 60 healthy people in the physical examination center served as the blank control group.The peripheral blood mononuclear cells(PBMCs) and plasma were separated.The helper T cells(Th)1/Th2 eytokines(IFN-γ,IL-2,IL-4 and IL-10) were detected by using ELISA.The flow cytometry was used to detect intracellular cytokines;the disease condition change from 1 d of onset to 30 d in the experiment group was analyzed by using NIHSS.The relationship between the cytokines and prognosis on 30 d evaluated by NIHSS score was analyzed.Results The peripheral blood IFN-γ level had statistically significant difference between the two groups(P＜0.05),while the levels of IL-2,IL-4 and IL-10 had no statistical difference(P＞0.05).The peripheral blood IFN-γ secretion level during early stage in the experimental group was positively correlated with the prognosis(P＜0.05).Conclusion The increase of peripheral blood IFN-γ during early stage is correlated with the poor prognosis in the patients with acute intracerebral hemorrhage.