The activation of coagulation system,especially in the occurrence and development of cardiogenic cerebral embolism,plays an important role.As one of the major preventive measures in ischemic stroke,the anticoagulant therapy is getting more and more attention.At the same time,the studies of anticoagulant drugs aiming to the intervention of different links in coagulation pathway have also made significant progress.

Objective To investigate the roles of a epoprostenol(PGI2) analog (Iloprost) in regulating the differentiation of CD4+ T cells to Treg cells and the possible mechanism.Methods Naǐve CD4+ T cells were isolated from human peripheral blood samples by using the magnetic-activated cell sorting (MACS) and then cultured under Treg-polarizing condition.The percentages of Treg cells and the expression of Foxp3 at mRNA level were respectively measured by using flow cytometry and RT-PCR for evaluation the effects of Iloprost on the differentiation of CD4+ T cells to Treg cells.The cAMP accumulation assay was used to detect the level of intracellular cAMP.Flow cytometry analysis was performed to detect the phosphorylation of signal transducer and activator of transcription 5 (STAT5).Results lloprost decreased the percentage of Treg cells and inhibited the expression of Foxp3 at mRNA level in a dose dependent manner (P＜0.05).However,the inhibitory effects of Iloprost were weakened when IP receptors were blocked by IP antagonist (CAY10449).A six-fold increase in the levels of intracellular cAMP in Treg cells was induced by Iloprost (P＜0.05) and a similar effect could be achieved by using a cAMP agonist,db-cAMP (P＞0.05).H-89,a protein kinase A inhibitor,inhibited the Iloprost-induced expression of cAMP in Treg cells.Moreover,Iloprost inhibited the IL-2 mediated phosphorylation of STAT5 (P＜0.05) and a similar effect could be achieved by using db-cAMP (P＞0.05).The Iloprost-mediated down-regulation of pSTAT5 was blocked by using H-89.Conclusion PGI2 could activate the cAMP-PKA signaling pathway by binding to the IP receptor,resulting in inhibited phosphorylation of STAT5 and suppressed differentiation of naǐve CD4+ T cells to Treg cells.

Objective:Characteristics of the retroperitoneal tumor blood supply arteries were analyzed to evaluate the safety and effec-tiveness of preoperative interventional embolization for benign and malignant retroperitoneal tumors. Methods:A total of 241 cases were divided into benign retroperitoneal tumor group and malignant retroperitoneal tumor group. Each group was divided into groups A, B, and C according to the long diameter of the tumor tissue. Group A>10.0 cm, 5.0 cm0.05). Significant differences in intraoperative bleeding and intraoperative blood transfusion were found between groups A and B (P<0.05). Main arteries of the abdominal retroperitoneal tumor are the lumbar, internal iliac, and adrenal arteries. The main artery of pelvic retroperitoneal tumor is the internal iliac artery. Conclusion:Preoperative interventional embolization can effec-tively reduce the risk of bleeding during malignant retroperitoneal tumor surgery and improve the perioperative safety of patients. No significant benefit of benign retroperitoneal tumors and no increased risk of bleeding during surgery were observed. Retroperitoneal tumor preoperative embolization should focus on investigating the lumbar, internal iliac, and adrenal arteries.

Objective To evaluate the feasibility and safety of hypothermic perfusion via renal artery balloon catheter before laparoscopic partial nephrectomy.Methods A total of 35 patients,who were arranged to receive laparoscopic partial nephrectomy during the period from March 2013 to December 2016 at the General Hospital of PLA,China,were enrolled in this study.The tumor was located in the left kidney in 22 patients and in the right kidney in 13 patients.The long diameter of the tumors was 2.3-7.0 cm,with a mean of (4.1±1.2) cm.Before laparoscopic partial nephrectomy,the implantation of renal artery balloon catheter was performed in all patients.The intraoperative renal cold-ischemia time,the time spent for operation and the amount of intraoperative blood loss were recorded.The creatinine clearance rate (Ccr) and estimated glomerular filtration rate (eGFR) were determined before operation as well as at one,3 and 7 days after operation.The intraoperative and postoperative complications were analyzed.Results Successful implantation of renal artery balloon catheter was accomplished in all 35 patients,with the technical success rate being 100％.Slipping of balloon catheter before laparoscopic partial nephrectomy occurred in one patient;in 2 patients incomplete occlusion of renal artery was found during operation and artery forceps had to be used to occlude the renal artery.In the other 32 patients,laparoscopic partial nephrectomy under the condition of hypothermic perfusion via renal artery balloon catheter was successfully carried out.No severe complications occurred during and after the operation.The average cold-ischemia time of the diseased kidney was 45 (20-125) min,the mean time for interventional procedure was 28 (20-40) min,the average surgery time was 147(95-235) min,the average amount of intraoperative blood loss was 180(50-1000) ml.The Ccr values determined before and at one,3,7 days after nephrectomy were (96.5±15.1),(75.2±10.5),(54.3±13.8) and (91.8±14.1) ml/min respectively.The eGFR values determined before and at one,3,7 days after nephrectomy were (99.5±15.3),(70.3±12.5),(65.5±11.7) and (96.8±12.3) ml·min-1·m-2 respectively.Statistical analysis indicated that in both groups the preoperative and 7-day postoperative Ccr values and eGFR values were significantly different from their one-day and 3-day postoperative values (P＜0.01),but no statistically significant differences existed between preoperative values and 7-day postoperative ones (P＞0.05).Conclusion Hypothermic perfusion via renal artery balloon catheter before laparoscopic partial nephrectomy is clinically safe and feasible,it can prolong the safe time of renal ischemia and protect renal function.

We investigated serotype and resistance of Salmonella during pig slaughtering in Shandong Province,China,providing basic data for the risk assessment of Salmonella and for guiding the clinical medication.We used rapid classification kit to identify Salmonella serotype,adopted broth microdilution method to detect the resistance of 13 kinds drugs belong to 8 categories.Result showed that the identified 9 kinds of serotype were mainly S.derby and S.typhimurium.The resistance to 13 kinds drugs of 298 Salmonella were different.The higher percentage of tetracycline drugs as Doxycycline(DOX) and Tetracycline(TE) were 97.99％ and 80.20％,respectively,which was most sensitive to Colistine E.The resistant rate was only 2.01 ％,following by Amoxicillin/Clavulanic acid and Ofloxacin which were 2.35 ％ and 4.03％,and the multiple resistant rate was 81.88％.TE-DOX was the regnant drug-resistant spectrum.In conclusion,the predominant serotype of Salmonella in links of pig slaughtering in Shandong Province is S.derby,and resistance is different to the different drugs.The drug resistance of different slaughter links exist significant differences,multiple drug resistance is serious,and drug-resistant spectrum are varied.

For the treatment of liver tumors,interventional therapy is becoming more and more important.The development of interventional therapy relies on the development and application of new materials,new equipment and new drugs,and the preclinical animal testing of these applications is an important part of assessing the safety and effectiveness of interventional procedures.The animal HCC model plays an important leading role in exploring the new approach of interventional therapy.However,the animal HCC models which are suitable for experimental researches are limited,at present,the animal HCC models are mainly confined to rats and rabbits.Due to the limitation of animal body shape,routine interventional instruments and equipment are not suitable to perform interventional procedures for some small animals.Nowadays,there is still a shortage of devices for interventional hepatic artery surgery in mice,and interventional instruments for rats are also limited.This paper aims to make a summary about the types of HCC model in rats and rabbits which are often used in the experimental researches,the modeling methods,the interventional procedures,the anesthesia and imaging examinations,etc.

Objective:To analyze the clinical characteristics and pathogen distributions of the patients with bone and joint infection.Methods:The clinical data and etiological results of 225 patients with bone and joint infection from January 2008 to October 2020 in Huashan Hospital, Fudan University were retrospectively analyzed.Statistical analysis was conducted by chi-square test.Results:Of the 225 cases with bone and joint infection, 75.6%(170/225) were extremities and other osteomyelitis, 16.0%(36/225) were suppurative arthritis, 8.4%(19/225) were spinal osteomyelitis. Non-implants related infection accounted for 80.4%(181/225) of the cases, while 19.6%(44/225) of the cases were implants related infection. The main clinical manifestations were localized pain (48.4%(109/225)), dyskinesia (47.6%(107/225)), localized swelling (28.9%(65/225)), fever (28.0%(63/225)), and increased purulent exudation (24.9%(56/225)). The proportions of localized pain (55.8%(101/181)) and fever (31.5%(57/181)) of non-implants infection were higher than those of implants infection (18.2%(8/44) and 13.6%(6/44), respectively), while the proportion of increased purulent exudation in implants infection (50.0%(22/44)) was higher than that in non-implants infection (18.8%(34/181)). There were all significant differences between the two groups ( χ2=15.49, 5.60 and 18.45, respectively, all P<0.050). Of the 225 cases, 63 cases(28.0%) had complications with other site infection, especially soft tissue infection and bloodstream infection. A total of 106 strains of pathogens were isolated from 225 specimens, 58.5%(62/106) of them were Gram positive bacterium.Among them, 34.0%(36/106) were Staphylococcus aureus, with the rate of methicillin resistant Staphylococcus aureus (MRSA) isolation accounting for 11.3%(12/106). Laboratory tests showed that 40.4%(91/225) of the patients had elevated erythrocyte sedimentation rate (ESR), 32.9%(74/225) patients had elevated C-reactive protein (CRP). Proportions of patients with elevated ESR (43.6%(79/181)) and CRP (37.6%(68/181)) in non-implants infection were significantly higher than those in implants infection (27.3%(12/44) and 13.6%(6/44), respectively). There were significant differences between the two groups ( χ2=3.94 and 9.19, respectively, P=0.047 and 0.002, respectively). Conclusions:The main clinical manifestations of bone and joint infection are localized pain, dyskinesia, localized swelling, fever and increased purulent exudation. Patients with bone and joint infection are easy to be complicated with soft tissue infection and bloodstream infection, and often accompanied by increased ESR and CRP levels. Gram positive bacterium are the main pathogens.

Objective To investigate the effect of the Shaofu zhuyu decoction on the changes of the body writhing behavior,inflammatory reaction and COX-2 expression of the rats with the primary dysmenorrhea. Methods Fifty SD female rats were randomly divided into blank control group,model control group,high,middle and low dose of Shaofu zhuyu decoction groups,10 in each group.Dysmenorrhea rat model was established by treating with estradiol benzoate and oxytocin.Effect of Shaofu zhuyu decoction of different doses on writhing behavior,changes of endometritis cells and COX-2 expression in uterine smooth muscle of dysmenorrhea rats were observed. Results In the model control group,latency of the body writhing behavior was shortened and the total score was high,many inflammatory cells (especially for neutrophils) infiltrated in endometrium and uterine smooth muscle,immunohistochemistry showed that brown granules were found in the cytoplasm of smooth muscle cells of uterus,and COX-2 expression was positive in uterine smooth muscle cells.As compared with the model control group,writhing latency increased,total score decreased in both the high and middle dose of Shaofu zhuyu decoction groups,and infiltration of a small number of inflammatory cells was seen in the endometrium and smooth muscle(P<0.01);COX-2 expression was decreased (P<0.01) especially for the high dose of Shaofu zhuyu decoction group.As compared with the model control group,the latency of the low dose of Shaofu zhuyu decoction group was significantly increased,and the total score was decreased(P<0.01),but there was no significant difference in inflammatory cell infiltration and COX-2 expression (P>0.05). Conclusion A potential mechanism by which Shaofu zhuyu decotion treats primary dysmenorrhea may be related with alleviating pain,inhibiting inflammatory responses,and down-regulating expression of COX-2.

Hepatocellular carcinoma is a commonly-seen malignant tumor with high morbidity and mortality all over the world.With the rapid development of molecular biology and scientific technology,in treating HCC the use of nano knife technology,which is developed on the principle of irreversible electroporation,has come into clinicians' consideration.The authors are hereby making a comprehensive review about nano knife,focusing on the principles of nano knife therapy for liver cancer,the advantages of nano knife,and the latest developments in clinical practice and researches,etc.

Objective:To explore the effect of Bushen Huoxue Decoction on ventricular remodeling and myocardial nuclear factor-kappaB (NF-κB) protein in rats with chronic heart failure.Methods:60 male SD rats were randomly divided into sham operation group (15 rats) and experimental group (45 rats). The rats of the experimental group was established CHF model by ligating the left anterior descending coronary artery combined with exhaustive swimming and starvation. Rats with chronic heart failure were randomly divided into model group, Bushen Huoxue group and lisinopril group.The Bushen Huoxue group was perfused with 15.75 g/(kg·d) Bushen Huoxue Decoction, the lisinopril group was perfused with 1.8 mg/(kg·d) of lisinopril suspension, and the sham operation group and model group were perfused with equal volume of distilled water. After 4 weeks of administration, the general mental state of rats was observed. The left ventricular internal systolic diameter (LVIDs) and internal diastolic diameter (LVIDd) were measured by cardiac color Doppler ultrasound, and the left ventricular ejection fraction (LVEF) and short axis shortening fraction (LVFS) were calculated. The expression of NF-κB protein in rat myocardium was detected by Western blot, and the morphology of left ventricular myocytes was observed by hematoxylin eosin staining.Results:Compared with the model group, the myocardial fibers of rats in Bushen Huoxue group and lisinopril group were arranged orderly, with few pyknosis, a small amount of inflammatory cell infiltration. Compared with the model group, the levels of LVIDs [(6.00±0.58)mm vs. (6.99±0.90)mm] and LVIDd [(3.96±0.51)mm vs. (5.14±0.57)mm] significantly decreased, LVEF [(54.48±6.75)% vs. (30.28±4.85)%] and LVFS [(33.86±4.27)% vs. (26.10±4.96)%] significantly increased, as well as the expression of myocardial NF-κB (1.06±0.10 vs. 1.58±0.29) protein significantly decreased ( P<0.05). Conclusion:Bushen Huoxue Decoction can resist ventricular remodeling,improve cardiac function and treat heart failure of CHF rats and the possible mechanism might be it could down-regulate myocardial NF-κB expression.