Background and purpose: Hepatocellular carcinoma (HCC) is a hypervascular tumor associated with a poor prognosis and lack of effective treatments. Consequently, identifying novel therapeutic strategies are urgently needed. We have previously shown that the kringle 1 domain of human hepatocyte growth factor (HGFK1) is a more effective anti-angiogenesis molecule than angiostatin. In this study, we observed the effects and mechanisms of HGFK1 gene on the HCC. Methods: A recombinant adeno-associated vires carrying the HGFK1 gene (rAAV-HGFK1) was constructed.HCC of rat was induced by McA-RH7777. rAAV-HGFK1 was used to treat the rat, median survival time and metastasis rate were observed. Results: Ten days after tumor cell inoculation, surgery were performed to confirm the tumor formation, PBS, rAAV-EGFP or rAAV-HGFK1 was injected directly into the tumor nodule followed by portal vein injection. Results from our study demonstrated that rAAV-HGFK1 treatment significantly prolonged the median survival time of the HCC bearing rats from 30 days (PBS and rAAV-EGFP groups) to 49 days (rAAV-HGFK1 group). More importantly rAAV-HGFK1 inhibited tumor growth and completely prevented liver, lung and peritoneal metastasis. In the controlled PBS and AAV-EGFP group, liver and peritoneal metastasis rate were both 100%, and lung metastasis rate was 100% and 83%, respectively. While there was no metastasis found in treatment group, with only 33% of ascites happened. This was most possibly due to the primary tumor in liver but not due to the metastasis. Moreover, at a higher magnification (1000×), it was clear that the HGFK1 protein was expressed mainly in the cytoplasma of liver cells. In parallel, IHC staining of CD31 also demonstrated a significantly lower level of microvessel density (MVD) (6.21±1.6) in the liver tumor of the AAV-HGFK1 treatment group, as compared to the two control PBS and AAV-EGFP groups (25.1±2.1 and 26.8±2.5, respectively, P<0.01). HE staining showed that AAV-HGFK1 treatment induced large areas of necrosis in the tumor tissues, while minimal areas of necrosis were observed in the tumor tissue in the control groups. In addition, no toxicity appeared when high dosage (4.8× 1012 vg/rat) of rAAV-HGFK1 was administered in rats. Conclusion: Results from this study demonstrated that HGFK1 inhibited the growth and metastasis of HCC and prolonged the survival time of animals with HCC through anti-angiogenesis effects. No obvious toxicity was observed. It might be the novel promising treatment for HCC and other cancers.

Objective To study the influence of NS4B on host defense system. Methods After cell line stably expressed NS4B was established, cell expression profiling caused by NS4B was studied using DNA microarray, and the results of microarray were verified via IFNGR1 fluorescence intensity analysis. Results The data showed that HCV-NS4B could suppress host defense system-associated gene ex-pression, in particular, IFN-γsignal transduction-related genes. Conclusion NS4B could play a role in persistence and resistance to IFN therapy in HCV infection.

Objective To investigate the efficacy of ultrasound-guided cervical plexus block in radiofrequency ablation of thyroid and parathyroid benign lesions . Methods One hundred and twenty-five patients with thyroid nodules or hyperparathyroidism , who were undergone ultrasound guided radiofrequency ablation ,were randomly assigned to receive either ultrasound-guided cervical plexus block or local infiltration anesthesia ,and the pain grading was evaluated by numerical rating scale ( NRS ) . The anesthetic dosage and the effect of thermal ablation surgery of ultrasound-guided cervical plexus block anesthesia and local anesthesia were compared . Results The anesthetic dosage in ultrasound-guided cervical plexus block was lower than that in local infiltration anesthesia( t = 17 .681 , P < 0 .05) . The pain grading of ultrasound-guided cervical plexus block was lower than that of local infiltration anesthesia( χ2 = 33 .738 , P < 0 .05) . Conclusions Ultrasound-guided cervical plexus nerve block has lower anesthetic dosage and pain grading in the radiofrequency ablation of thyroid and parathyroid benign lesions ,which may be widely applied in clinical .

Objective To explore the relationship between the early stage HbA1c level and two-year prognosis in the patients with first time onset of acute ischemic stroke(AIS).Methods A total of 513 inpa-tients with first time AIS in this hospital during 2018-2019 were selected as the study subjects.The clinical data,biochemical indicators and discharge situation were collected.The multivariate logistic regression was used to analyze the influencing factors of adverse reactions outcome within 2 years.The Kaplan-Meier survival curve was used to analyze the all-cause mortality and stroke recurrence situation within 2 years.Results The sex,age,TOAST type,,diseases history such as diabetes,arrhythmia and coronary heart disease,medication history such as antidiabetic drugs,lipid-lowering drugs and anticoagulants,BMI,Urea,Crea,ALT,SBP,fasting blood glucose(FBG),total cholesterol(TC),triglyceride(TG),HDL-C,NIHSS score at admission,discharge mode,NIHSS score at discharge,hospitalization duration and hospitalization costs had statistical difference a-mong the patients with different HbA1c levels(P＜0.05).The multivariate logistic regression analysis showed that HbA1c＞7.4％was the independent risk factor for adverse outcome within 2 years(OR=4.470,95％CI:1.105-18.087,P=0.036).The Kaplan-Meier survival curve analysis showed that the survival time within 2 years had statistical difference among the patients with different HbA1c levels(P=0.009).The higher the HbA1c level,the shorter the survival time.Conclusion The high HbA1c level has the influence on the stroke recurrence and all-cause mortality within 2 years in the patients with first onset occurrence of AIS.

Objective: To evaluate the differential diagnosis of idiopathic granulomatous mastitis (IGM) and invasive ductal carcinoma. Methods: The ultrasonographic data of 37 IGM patients and 50 cases of IDC were analyzed retrospectively. The shape, growth direction, margin, internal echo, posterior echo, calcification, Adler blood flow classification, PSV(peak sestolic velocity), RI (resistance index)and elasticity scores were analyzed by χ² test and independent sample t test. The optimal cutoff values of age, PSV and RI were calculated by receiver operating characteristic (ROC) curve. Logistic regression analysis was used to calculate the odds ratio (OR) of ultrasonic variates in the diagnosis of both diseases. Results: There were no significant differences in the shape, margin, internal echo and blood flow grading between the two groups. The age, lesion growth direction, posterior echo, calcification, PSV, RI and elasticity were statistically different. The cut-of value of Age, PSV and RI were 38.5 years old, 13.20 cm/s, and 0.655. Logistic regression multi-variated analysis revealed that elastic score (OR=9.806) had the best value of the differential diagnosis, as well as calcification (OR=6.937), posterior echo decay (OR=4.613), RI (OR=3.257), lesion growth orientation (OR=3.198), and PSV (OR=1.202). Lesion shape, margin, internal echo, and Adler blood flow classification did not help in differential diagnosis. Conclusion Ultrasound multi-parameter analysis has high value in IGM and IDC differential diagnosis.