Objective To investigate the dose-response and its mechanisms of preventive effect of 103 Pd radioactive stent on restenosis in rabbits after balloon injury. Methods The abdominal arteries of the rabbits randomized into common or radioactive stent groups (including 5 Gy, 15 Gy, 25 Gy, 35 Gy groups) were balloon injured, and then stented. Intravascular ultrasound and angiography on abdominal arteries, immunohistochemical study of PCNA, and TUNEL assay were performed 8 weeks after stenting. Results Both the minimal lumen diameters and in-stent lumen areas in 103 Pd radioactive stent groups [(1.94?0.21) mm and (5.99?0.43) mm2, (2.17?0.12) mm and (7.01?0.93) mm2, (2.43?0.22) mm and (8.09?0.89) mm2, (2.56?0.27) mm and (8.49?0.54) mm2 in turn in 5 Gy, 15 Gy, 25 Gy, 35 Gy groups, respectively]were significantly improved with increases of the doses at the end of 8 weeks,revealing a dose-response effect. The positive ratio of PCNA in each 103 Pd stent group was reduced as compared with that in commen stent group (P

0.05), but the symptom of fever and character of respiratory tract's secretion of the patients in experiment group took turns for better obviously than the control group's ( P

Objective To compare the screening effects between Wells and revised Geneva scores on suspected acute pulmonary thromboembolism (APTE),and to explore a optimum screening method for APTE in the emergency department of China.Methods The study was carried out by using random,crossed,prospective methods to compare the screening effects between Wells and revised Geneva scores for 167 suspected APTE patients in the emergency department of the First Affiliated Hospital of Xiamen University.Results The areas under the receiver operating characteristic curve of Wells and revised Geneva scores for screening APTE in the emergency department were (0.917 ± 0.022 ) and (0.927 ± 0.020),respectively ( P ＜ 0.05 ).The diagnostic concordance between the two score systems for predicting APTE was poor (Kappa value =0.276 ). In addition, the difference between their hierarchical discrimination for the possibility of APTE was statistically significant ( P ＜ 0.05 ).Compared with revised Geneva score,fewer patients were diagnosed with low clinical probability of APTE and more patients were diagnosed with intermediate or high clinical probability of APTE through Wells score.The patients with low chnical probability of APTE were excluded from pulmonary embolism in Wells or revised Geneva score.At intermediate clinical probability,the accuracy rate of Wells score for predicting APTE (9.64％) was lower than that (32.84％ ) of revised Geneva ( P ＜ 0.05 ).At high clinical probability,there was no significant difference between their accuracy rate [ (67.24％ vs.86.21％),P＞0.05]. Conclusions Revised Geneva score is more suitable than Wells score in screening suspected APTE patients in the emergency department in our country.

Objective To establish a new model of cardiac arrest (CA) in rats by transcutaneous electrical epicardium stimulation. Method Two acupuncture needles connected to the anode and cathode of a stimulator were transcutaneously inserted into the epicardium as electrodes. The stimulating current was steered to the epicardium and the stimulation was maintained for 3 minutes to induce CA. Cardiopulmonary resuscitation (CPR) was performed at 6 minutes after a period of nonintervention. Results The success rate of induction was 12/20 at the current intensity of 1 mA; and reached 20/20 when the current intensity was increased to 2 mA. The average time from the electrical stimulation to CA induction was (5. 10 ± 2. 81) seconds. When the electrical stimulation stopped, 18/20 rats had ventricular fibrillation and 2/20 rats had pulseless electrical activity. CPR was performed for averagely 207.4 ( ± 148.8) seconds. The restoration of spontaneous circulation was 20/20. The death rate within 4 hours after CA was 5/20, and the 72-hour survival rate was 10/20. There were only two cases of complications, a minor muscle contraction and a minor lung lobe injury. Conclusions The model of CA in rats induced by transcutaneous electrical epicardium stimulation is a stable model that requires low-intensity current and has fewer complications.

Objective To explore the value of 3.0T MRI in preoperative diagnosis and staging of elderly cervical carcinoma.Methods Totally 73 patients were enrolled in this trial.The MRI features of cervical carcinoma and invasion of adjacent tissue were evaluated,the correlation of MRI staging and pathological staging was studied.Results MRI showed lesions in 73 patients,the accuracy of diagnosis for uterine cervical carcinoma was 100.0 ％,for parametrial invasion was 94.2 ％.The results of MRI staging of 52 cases showed the accuracy was 88.5％ (46 cases) as compared with postoperative pathology.The correlation between the MRI and postoperative pathology in the stages of Ⅰ B,Ⅱ A and Ⅱ B uterine cervical cancer was very well(x2 ＝ 61.43,P＜0.01),the consistency of MRI in the diagnosis of uterine cervical cancer in stage Ⅲ and Ⅳ with postoperative pathology was extremely strong(100％).Conclusions The accuracy of diagnosis and staging for uterine cervical carcinoma is high in MRI imaging.

Objective To investigate the effects of hydrogen on post - cardiac arrest brain injury in rabbits.Method Sixty New Zealand rabbits were randomly divided into two groups,namely experiment group ( group A,n =30 ) and control group ( group B,n =30 ).Inhalation of 2％ hydrogen gas was conferred to rabbits immediately at the end of cardiac arrest modeling for 72 hours in the group A. Air instead was given to rabbits in the group B.Blood samples were collected before cardiac arrest (CA),and 4,12,24 and 72 hours after restoration of spontaneous circulation (ROSC) in all rabbits for determining the levels of hydrogen,tumor necrosis factor - α ( TNF - α),neuron - specific enolase (NSE) and protein S100β.At the same time,rectal temperature,mean arterial pressure,heart rate and respiration rate were recorded,and the neurologic deficit scoring (NDS) was carried out.The rate of systemic inflammatory response syndrome ( SIRS ) and the rate of survival of rabbits were analyzed. Results There was no significant difference in level of TNF - α activation between group A and group B within12 h of cardiopulmonary resuscitation (CPR).In group A,TNF - α level and the rate of SIRS peaked at 24 hours after CPR,which were higher than those in group B,and then decreased gradually,and the rate of survival was higher than that in group B in 72 hours after ROSC,the NSE was lower than that in group B at 24 hours after ROSC.In group B,S100β level began to increase significantly 4 hours after CPR,which was higher than that in group A,the level of NDS in group B was higher than that in group A 72 hours after ROSC.Conclusions Inhalation of hydrogen gas lessened inflammation and alleviated the brain injury after CPR.

A total of 192 patients with sepsis were tested by Montreal Cognitive Assessment (MoCA) for a preliminary diagnosis of whether or not there was sepsis associated encephalopathy (SAE) according to their test results.SAE was diagnosed or excluded after consultations and comprehensive analysis on the basis of clinical manifestations and auxiliary examination results.The scores of the patients in this group were (25.7 ± 3.3) points.The sensitivity of MoCA for screening SAE was 0.776 and its specificity 0.963.The rate of diagnostic coincidence between MoCA and comprehensive analysis for SAE was 0.880.The diagnostic concordance between two diagnostic methods of SAE was excellent (kappa value =0.753 ± 0.048,P =0.000).The area under the receiver operating characteristic (ROC) curve of MoCA for screening SAE was 0.929 ± 0.019 (P =0.000) ; the optimal cutoff value was 25.5 points; and its sensitivity was 0.779 and specificity 0.962.And negative correlations existed between score of MoCA and age,disease course and co-existing shock or multiple organ dysfunction syndrome (P ＜ 0.05).

OBJECTIVETo summarize the experience of a single treatment using molecular adsorbent recirculating system (MARS) in patients with acute-on-chronic liver failure.

METHODSTwenty-five eases treated by MARS-artificial liver were followed up and reviewed.

RESULTSThe levels of serum total bilirubin, non-conjugated bilirubin and blood ammonia were significantly decreased from (618.51 200.68) mmol/L to (390.81 146.02) mmol/L (t=2.729, P<0.01), (490.03 163.39) mmol/L to (303.28 113.06) mmol/L (t =2.516, P<0.01), and (152.44 82.62)mmol/L to (84.80 13.30)mmol/L (t=2.174, P<0.05), respectively. Prothrombin activity was significantly increased from 70.55% 32.39% to 93.63% 14.20% (t=1.728, P<0.05) in patients during a single 6 h treatment with MARS. No difference was presented in the markers of liver zymogram, serum protein, kidney function, electrolyte, blood routine and blood gas analysis before and after the MARS. Thirteen of 17 patients have been cured or improved, 4 died, and the survival rate was 76.5%.

CONCLUSIONSMARS is a safe and an effective treatment for patients with liver failure.

Adult ; Aged ; Ammonia ; blood ; Bilirubin ; blood ; Chronic Disease ; Female ; Follow-Up Studies ; Humans ; Kidney Function Tests ; Liver Failure, Acute ; blood ; therapy ; Liver Function Tests ; Liver, Artificial ; adverse effects ; Male ; Middle Aged

OBJECTIVETo establish the HPLC chromatographic fingerprint of Kumu injection and to simultaneously determine the contents of three beta-carboline alkaloids, comprehensively evaluating the immanent quality of Kumu injection.

METHODThe chromatographic analysis was performed on a Phenomenex Gemini C18 ( 4.6 mm x 250 mm, 5 microm) column with the gradient elution solvent system composed of methanol and 30 mmol x L(-1) aqueous ammonium acetate (adjusted with glacial acetic acid to pH 4.5). Similarity evaluation system for chromatographic fingerprint of traditional Chinese medicine (2004 A) was used in data analysis.

RESULTSixteen co-possessing peaks were selected as the fingerprints of Kumu injection, and 7 peaks were identified by chemical reference substances. There were good similarities between the standard fingerprint chromatogram and each fingerprint chromatogram from the eleven samples for their similarity coefficients were not less than 0.9. Three kinds of beta-carboline alkaloids were separated well. The correlation coefficients were 0.999 9. The linear ranges of three components were 0.020 0-0.300 0, 0.102 0-1.530 0, 0.015 2-0. 228 0 microg, respectively, and the average recoveries ranged were from 99.5% to 102%.

CONCLUSIONThe method of fingerprint combined with quantitative analysis is sensitive, selective, and provide scientific basis for quality control of Kumu Injection.

Alkaloids ; analysis ; Carbolines ; analysis ; Chromatography, High Pressure Liquid ; methods ; Drug Stability ; Drugs, Chinese Herbal ; chemistry ; Injections ; Pharmaceutical Solutions ; Picrasma ; chemistry ; Plants, Medicinal ; chemistry ; Quality Control ; Reproducibility of Results ; Sensitivity and Specificity

Objective To investigate the value of aortic dissection detection (ADD) risk score in the diagnosis of acute aortic syndromes (AAS). Methods Three hundred and forty-two patients with acute chest pain or back pain admitted to the Department of Emergency of the First Affiliated Hospital of Xiamen University from January 2013 to April 2016 were enrolled. At last, 71 patients were definitely diagnosed as AAS (AAS group), and 271 cases were diagnosed as non-AAS (non-AAS group). Furthermore, according to the ADD risk score, they were subdivided into two groups: low-risk (ADD score ≤ 1) and high risk (ADD score >1) subgroups. In the two groups, the ADD risk indexes and the proportions of patients with different risk scores were observed; the receiver operating characteristic curve (ROC curve) was drawn to evaluate the value of ADD risk score for diagnosing AAS. Results Compared with the non-AAS group, the proportions of patients in AAS group with indicators of high-risk pain characteristics, such as sudden pain and laceration-like pain were increased significantly [83.1% (59/71) vs. 31.0% (84/271), 29.6% (21/71) vs. 0 (0/271)];meanwhile, the proportions of patients with high-risk physical examination indicators, such as systolic blood pressure differences among the 4 extremities and the defect of local nerve function in AAS group were also significantly increased [23.9% (17/71) vs. 0 (0/271), 11.3% (8/71) vs. 0 (0/271), both P < 0.05]; the proportion of patients with high risk AAS score in AAS group was higher than that in the non-AAS group [66.2% (47/71) vs. 1.5% (4/271), P < 0.01]. The sensitivity of ADD score ≥ 1 for diagnosis of AAS and area under ROC curve (AUC) were all higher than those of ADD score ≥2 (sensitivity: 98.6% vs. 66.2%, AUC: 0.819 vs. 0.564), moreover, the specificity and the positive predictive value of ADD score ≥ 2 for diagnosis of AAS were higher than those of ADD score ≥ 1 (98.5% vs. 59.8%, 92.2% vs. 39.1%respectively). When the ADD risk score ≥ 1, its odds ratio (OR) = 104.0, 95% confidence interval (CI) was 0.761-0.877, P = 0.000; while ADD risk score ≥ 2, OR = 130.7, 95%CI was 0.516-0.612, P = 0.003. Conclusion It is shown that when ADD risk score (> 1) is used to diagnose AAS, it has relatively high sensitivity, when ADD score being high risk (> 1 score) is applied to diagnose AAS, its specificity is high, thus ADD risk score has important value in helping the early diagnosis of AAS.