Aim To study the in vitro and in vivo an-tioxidant activity of Inula nervosa wall. in order to le-gitimately use the resources of I. nervosa. Methods The medicinal ingredients of aboveground and under-ground parts of I. nervosa were extracted by different extraction methods. Ultrasonic extractions from differ-ent parts were compared by their in vitro and in vivo antioxidant effects. Results Ultrasound alcohol ex-traction had the highest content of total phenols and fla-vonoids, with the content of total phenolics much high-er than that of total flavonoids. Ultrasound alcohol ex-tractions had very good scavenging effect on DPPH, ABTS and superoxide anion radical, with the extraction from underground part more effective than extraction from aboveground part. Ultrasound alcohol extractions significantly increased the level of catalase ( CAT), superoxide dismutase (SOD), total antioxidant capaci-ty (T-AOC), glutathione peroxidase (GSH-Px) activi-ty and decreased the level of malondialdehyde (MDA) in liver, kidney and serum in drenching aging mice. The antioxidant activity of high concentration of the ex-traction from aerial part was equivalent to that of low concentration of the extraction from underground part. Conclusions Ultrasound alcohol extractions of I. ner-vosa have very good scavenging effect on free radicals, which indicates good antioxidant ability. Antioxidant activity of underground part is much stronger than that of the aboveground part.

Objective To investigate the relationship between brachial ankle pulse wave velocity and the incidence of cardio-cerebral events in people aged over 40. Methods Cluster sampling method was used to prospectively study 4 380 residents aged over 40 in Guiyang City District from May to August in 2011. Data of ba-PWV were collected. The follow-up examination was conducted from July to November of 2014. According to ba-PWV values, participants were divided into three groups:<14 m/s (control, n=1 039) group, 14-17.9 m/s group (n=1 393) and≥18 m/s group (n=809). Multi-factor Logistic regression model was used to analyze the relationship between ba-PWV values and risk factors of cardio-cerebral events. Results After three-year follow-up, a total of 3 241 participants were included in the final analysis. The cardio-cerebral events were identified in 63 (2.0%) cases, which were 0.6%, 2.2%and 3.2%in control group, 14-17.9 m/s group and≥18 m/s group. The value of ba-PWV increased significantly in those two groups compared with that of normal group. Logistic regression analysis showed that the incidence rates of cardiovascular and cerebralvascular events in 14-17.9 m/s group and≥18 m/s group were 2.777 (1.123-6.864) and 2.786 (1.032-7.526) times of control group after adjusting age, gender, systolic blood pressure, risk factors of diabetes, hypertension and blood lipids. Conclusion There is higher incidence rate of cardio-cerebral events in people aged over 40 in higher ba-PWV group. The value of Ba-PWV can be used to predict the occurrence of cardio-cerebral events.

Objective To evaluate the clinical value of Fluorine-18-fluorodeoxyglucose (18F-FDG) positron-emission temography-computed tomography (PET-CT) examination in intrahepatic cholangiocarcinoma (ICC) staging.Methods The retrospective cross-sectional study was conducted.The clinicopathological data of 190 patients with ICC who were admitted to the Eastern Hepatobiliary Surgery Hospital Affiliated to Naval Military Medical University from September 2013 to June 2016 were collected.There were 107 males and 83 females,aged from 37 to 79 years,with an average age of 57 years.There were 90 cases without distant metastasis undergoing surgery treatment and 100 with distant metastasis undergoing non-surgical treatment.Patients underwent preoperative CT,magnetic resonance imaging (MRI),and PET-CT examination,and then received surgery or non-surgery according to preference of patients and their family members.Observation indicators:(1) imaging features on preoperative CT,MRI,PET-CT examination;(2) treatment;(3) evaluation of tumor diameter,multiple tumors,macrovascular invasion,and bile duct invasion by three examinations in ICC staging of patients undergoing operation;(4) evaluation of regional lymph node metastasis by three tests in ICC staging of patients undergoing operation;(5) evaluation of distant metastasis in ICC staging by three tests.Measurement data with normal distribution were represented as Mean±SD,and comparison between groups was analyzed by single factor ANOVA and paired comparison was analyzed by SNK method.Measurement data with skewed distribution were described as M (range).Count data were described as absolute number or percentage,and comparison between groups was analyzed using the chi square test.Results (1) Imaging features on preoperative CT,MRI,PET-CT examination:all the 190 patients received routine upper abdominal CT,MRI,and systemic PET-CT examination before treatment.CT imaging of ICC showed inhomogeneous low density on plain scan,peripheral enhancement in arterial phase,persistent enhancement of tumor margin in portal phase,and sometimes mild to moderate centripetal enhancement.MRI imaging showed heterogeneous low signal on T1-weighted imaging,uneven high,and slightly high signal on T2-weighted imaging.Reinforcement on MRI is the same as CT.Transverse images,fusion transverse images and maximum intensity projection images of PET-CT imaging showed abnormal high FDG uptake around the tumor.(2) Treatment:81 out of the 90 ICC patients with surgery treatment underwent hepatectomy and lymphadenectomy,and 9 underwent only tumor tissue biopsy and lymph node biopsy due to intraoperative finding of abdominal metastasis.Of the 100 non-operated patients,30 received systemic chemotherapy,23 received local radiotherapy,and 47 gave up treatment.(3) Evaluation of tumor diameter,multiple tumors,macrovascular invasion,and bile duct invasion by three examinations in ICC staging of patients undergoing operation:the tumor diameters of ICC on CT,MRI and PET-CT were (6.8±2.8)cm,(6.9±2.9)cm,(7.2±2.8)cm,respectively.There was no significant difference among the three methods (F=0.085,P＞0.05).CT,MRI,PET-CT had similar accuracy of 80.0％ (72/90),78.9％ (71/90),72.2％ (65/90) on diagnosing multiple tumors,87.8％(79/90),92.2％ (83/90),94.4％ (85/90) for macrovascular invasion,and 93.3％ (84/90),95.6％ (86/90),96.7％ (87/90) for vascular and bile duct invasion,respectively,there was no significant difference in the above indicators between the three groups (x2 =1.801,2.662,1.131,P＞0.05).(4) Evaluation of regional lymph node metastasis by three examinations in ICC staging of patients undergoing operation:the accuracy of CT,MRI and PET-CT examination for lymph node metastasis was 62.2％ (56/90),68.9％(62/90),86.7％ (78/90) and sensitivity was 40.0％ (16/40),47.5％ (19/40),80.0％ (32/40),respectively,showing significant differences between the three groups (x2 =14.446,14.666,P＜0.05),showing a significant difference between CT and PET-CT examination (x2=14.134,13.333,P＜0.05),showing a significant difference between MRI and PET-CT examination (x2=8.229,9.141,P＜0.05).The sensitivity of CT,MRI and PET-CT examination for lymph node metastasis was 80.0％ (40/50),86.0％ (43/50),92.0％ (46/50),showing no significant difference between the three groups (x2=2.990,P＞0.05).(5) Evaluation of distant metastasis in ICC staging by three tests:there were 27,34 and 100 cases with distant metastasis evaluated by CT,MRI and PET-CT examination,including 40 with supraclavicular lymph node metastasis,32 with bone metastasis,30 with mediastinal lymph node metastasis,20 with hilar lymph node metastasis,17 with pulmonary metastasis;77 patients had more than 2 sites of metastasis.The accuracy of CT,MRI and PET-CT examination for distal metastasis in 190 ICC patients was 61.58％ (117/190),65.26％ (124/190),98.42％ (187/190),respectively,with a significant difference between the three groups (x2=83.639,P＜0.05),with a significant difference between CT and PET-CT examination (x2=80.592,P＜0.05),between MRI and PET-CT examination (x2=70.284,P＜ 0.05).Conclusion PET-CT examination makes up for the deficiency of CT and MRI in judging regional lymph node metastasis and distant metastasis,and contributes to the clinical staging of ICC.