Objective To investigate the inhibitory effect of ginsenoside Rg3 on herpes simplex virus(type 1(HSV-1) in vitro and) its immunoregulative effect.Methods Crystal violet staining was used to observe the inhibitory effect of Rg3 on the cytopathic effect caused by HSV-1.MTT colorimetry was used to detect the influence of Rg3 on the proliferation of Vero cells and mouse splenocytes.The mouse splenocytes were induced with Rg3,and the activity of IL-2 was detected by lymphoblast proliferation assay and IFN-? by cytopathic effect inhibition.(Results The) A_(570) values of cytopathic effect in the experimental group were significantly higher than those in the control group when doses of Rg3 were 1.56-25 mg?L~(-1) in vitro(P0.05).The secretary levels of IL-2 and IFN-? in experimental group were significantly higher than those in the control group in vitro when doses of Rg3 were(3.13-6.25)mg?L~(-1) (P

Objective To isolate cancer stem cells from human colon cancer cell line CW-2,and observe the biological characteristics.Methods The percentage of CD44＋EpCAM＋ cancer stem cells which were isolated by multi-combination method was evaluated by flow-cytometry.The biological characteristics of the stem cells were analyzed by cell cycle analysis,in vitro invasion assay and in vivo tumorigenicity assay.Results The percentage of CD44＋EpCAM＋ cancer stem cells was 89.57%,and their capabilities of generation,invasion,tumorigenicity were higher than non-cancer stem cells（P 0.05）.Conclusion CD44＋EpCAM＋ cancer stem cells showed low generation,high invasiveness,high tumorigenesis,and they could be isolated by multi-combination.

We presented a new method for vessel segmentation and vascular structure recognition for coronary angiographic images. During vessel segmentation, a new vessel function was proposed to attain vessel feature map. Then the region growing algorithm was implemented with an automatic selection of seed point, extraction of main vessel branch, and vessel detail repairing. In the algorithm of vascular structure recognition, a fuzzy operator was used, which can detect the structures of vascular segments, bifurcations, crosses, and tips. The experimental results indicated that there was about 5 percent larger vessel region which was extracted by the proposed segmentation method than that by the simple region growing algorithm, and several thinner vessels were resumed from the lower gray region. The results also indicated that the fuzzy operator could correctly infer the simulative and real vessel structure with 100% and 90.59% correctness rate on the average, respectively.
Algorithms ; Coronary Angiography ; Humans ; Radiographic Image Enhancement ; methods ; X-Rays

Objective: To understand the characteristics and trends of colorectal cancer incidence and mortality in Lishui residents from 2014 to 2018,so as to provide basis for the development of prevention and treatment measures of colorectal cancer. Methods : The incidence and mortality data of colorectal cancer in Lishui from 2014 to 2018 were collected through the information management system of chronic disease surveillance in Zhejiang Province. The incidence,mortality and annual percentage change(APC)of colorectal cancer were calculated and analyzed in different genders,ages and regions were analyzed. Results: From 2014 to 2018,there were 4 403 new cases of colorectal cancer in Lishui,with the crude and standardized incidence rate of 34.89/100 000 and 20.99/100 000,respectively. There were 2 369 deaths,with a crude mortality rate of 18.77/100 000 and a standardized mortality rate of 10.17 /100 000. The crude incidence rate and crude mortality rate in males were higher than those in females(39.71/100 000 vs. 29.77/100 000,21.31/100 000 vs. 16.08/100 000,both p<0.05). There were no statistically significant differences between urban and rural residents in the crude incidence rate and crude mortality rate(37.24/100 000 vs. 34.44/100 000,19.75/100 000 vs. 18.45/100 000,both p<0.05). The crude incidence rate and crude mortality rate increased with age. The APC of the mortality rate of colorectal cancer among urban residents was 11.31%,showing an increasing trend from 2014 to 2018(p<0.05). Conclusion The incidence and mortality of colorectal cancer are high in Lishui,and the focus groups are men,people aged over 40 years and urban residents.

Objective To compare the value of assessment with DWI and contrast-enhanced MRI (CE-MRI) in activity of sacroiliitis of patients with ankylosing spondylitis(AS).Methods Ninety-six patients conforming to modified New York criteria were prospectively collectedas the AS group, and twenty-one healthy volunteers were enrolled into the control group. According to the Bath AS disease activity index (BASDAI), erythrocyte sedimentation rate and C-reaction protein, AS patients were divided into the active AS group (n=60) and the chronic AS group (n=36) . All subjects were performed with conventional MRI, DWI and CE-MRI of bilateral sacroiliac joints. The MRI manifestations were reviewed and the ADC values and signal intensity enhancement rate (ΔSI) were measured.ANOVA was performed for the comparison ofΔSI and ADC values among active AS group, chronic AS group and control group with BASDAI and lab test results as the gold standards. ROC was analyzed with ΔSI and ADC values for activity of AS and paired
samples t test was obtained to comparethe areas under the ROC ofΔSI and ADC values.Results Among 96 cases of AS patients, MRI of sacroiliac jointsshowed that 62 cases had subchondral bone edema (57 cases of active group, 5 cases of chronic group), that 11 cases had bone surface erosion(4 cases of active group, 7 cases of chronic group), that 15 cases had bone sclerosis(6 cases of active group, 9 cases of chronic group) and that 58 cases had fat deposition on the sacroiliac joints (27 cases of active group, 31 cases of chronic group). The ΔSI values of the active group, the chronic group and control group were respectively (2.51 ± 1.69)%,(1.19 ± 0.67)%and(0.75 ± 0.21)%, and the ADCvalues were(1.33 ± 0.33)× 10-3,(1.00 ± 0.43)× 10-3 and(0.38±0.13)×10-3mm2/s. There were significant differences forΔSI and ADC values among three groups (F=18.375, 16.366. P<0.01), and statistical significance ofΔSI and ADC values were found between every two groups of three(P< 0.05).The area under the ROC between ΔSI and ADC to determine activity of AS patients were respectively 0.814 and 0.730, which had nostatistical significance(t=1.632, P=0.103). The sensitivity and specificity to determine activity of AS patients byΔSI=1.44%were 81.67%and 80.00%.The sensitivity and specificity to determine activity of AS patients by ADC=1.15 × 10-3/mm2 were 76.67% and 71.43%.Conclusion DWI and CE-MRI performed equally in detecting activity of AS patients.

Objective: To investigate the sodium,potassium and blood pressure of adult residents in Liandu District of Lishui,and to provide evidence for salt reduction intervention. Methods: A stratified random sampling method was used to select residents aged 18 to 69 years in Liandu District from December 2016 to February 2017. A questionnaire survey and physical examination were conducted to collect basic information. The 24-hour urine samples were collected to detect sodium and potassium intake. Results: Among 300 participants,the average daily intake of sodium was（10.59±3.90）g,which was higher in men than in women [（11.11±4.33）g vs.（10.08±3.37）g,P<0.05]. There were 274 participants with average daily intake of sodium more than 6 g,accounting for 91.33%. The average daily intake of potassium was（1.67±0.71）g,which was higher in women than in men [（1.77±0.72）g vs.（1.57±0.68）g,P<0.05]. The average daily intakes of potassium were significantly different among different age groups,with participants aged 20 to 29 years the lowest（P<0.05）. There were 217 participants with average daily intake of potassium less than 2 g,accounting for 72.33%. The ratio of sodium to potassium was 4.7±2.2,which was higher in men than in women（5.3±2.7 vs. 4.1±1.4,P<0.05）and decreased with age（P<0.05）. There were 291 participants with the ratio more than 1.87,accounting for 97.00%. The prevalence of hypertension was 31.67%,which was 33.65% in men and 29.80% in women. Conclusion The residents in Liandu District have high intake of sodium and prevalence of hypertension,yet low intake of potassium.

Objective : To investigate the knowledge,attitude and practice of salt reduction for hypertension prevention among residents in Liandu District of Lishui,and to provide reference for intervention of salt reduction. Methods : Residents aged 18-69 years in two communities and three towns of Liandu District were selected by multistage stratified random sampling method. They were investigated the prevalence of hypertension and knowledge,attitude and practice of salt reduction for hypertension prevention. Logistic regression models were used to analyze the influencing factors for knowledge,attitude and practice of salt reduction for hypertension prevention. Results : Among 1 801 participants,1 509 completed the survey,with a response rate of 83.79%. The prevalence of hypertension was 31.88%. The proportions of the participants who had knowledge, attitude and practice of salt reduction for hypertension prevention were 33.40%,60.70% and 58.58%,respectively. The results of multivariate logistic regression analysis showed that women（OR=1.583,95%CI：1.248-2.008）,hypertension（OR= 1.734,95%CI：1.303-2.308）,30 to 39 years old（OR=0.368,95%CI：0.226-0.597）,junior high school and above education（OR=0.057-0.403,95%CI：0.036-0.577）were the influencing factors for the knowledge of salt reduction for hypertension prevention;women（OR=1.342,95%CI：1.072-1.679）,married（OR=1.582,95%CI：1.167-2.144）,junior or senior high school education（OR=0.235-0.525,95%CI：0.163-0.736）,having the knowledge（OR=2.640,95%CI：2.033-3.430）were the influencing factors for the attitude of salt reduction for hypertension prevention;women（OR=1.632,95%CI：1.304-2.044）,30 to 39 years old（OR=0.494,95%CI：0.346-0.705）,rural residents（OR= 1.617,95%CI：1.276-2.050）,family history of chronic diseases（OR=1.455,95%CI：1.148-1.845）,having the knowledge（OR= 1.396,95%CI：1.084-1.797）,having the attitude（OR=4.059,95%CI：3.203-5.145）were the influencing factor for the practice of salt reduction for hypertension prevention. Conclusion The residents in Liandu District had low levels of the knowledge,attitude and practice of salt reduction for hypertension prevention. The higher levels of the knowledge and attitude of salt reduction for hypertension prevention,the higher level of the practice.

Objective     To compare the perioperative outcomes of atypical segmentectomy between robotic-assisted thoracoscopic surgery (RATS) and conventional video-assisted thoracoscopic surgery (VATS) in early-stage non-small cell lung cancer (NSCLC). Methods    The data of patients who underwent minimally invasive anatomic atypical segmentectomy in our hospital from October 2016 to December 2021 were collected. These patients were divided into a RATS group and a VATS group according to the operation method. Propensity score (PS) matching was used to select patients with close clinical baseline characteristics, and the perioperative results of the two groups were compared. Results    A total of 1 048 patients were enrolled, including 320 males and 728 females, with a mean age of 53.51±11.13 years. There were 277 patients in the RATS group and 771 patients in the VATS group. After 1∶1 PS matching, 277 pairs were selected. Both groups were well balanced for age, sex, smoking history, body mass index, Charlson comorbidity index, pulmonary function, tumor size, tumor location, and histological type. All patients were R0 resection, and there were no deaths within 30 days after surgery. The RATS group had shorter operative time [85 (75, 105) min vs. 115 (95, 140) min, P<0.001] and less blood loss [50 (30, 100) mL vs. 60 (50, 100) mL, P=0.001]. There were no statistical differences between the two groups in lymph node resection, conversion to thoracotomy, thoracic drainage time, total amount of thoracic drainage or postoperative complications (P>0.05). Conclusion    Both RATS and VATS atypical segment-ectomies are safe and feasible for early-stage NSCLC. RATS can effectively shorten the operative time, and reduce blood loss.

Objective    To summarize the experience of robot-assisted lung basal segmentectomy, and analyze the clinical application value of intersegmental tunneling and pulmonary ligament approach for S9 and/or S10 segmentectomy. Methods    The clinical data of 78 patients who underwent robotic lung basal segmentectomy in our hospital between January 2020 to May 2022 were retrospectively reviewed. There were 32 males and 46 females with a median age of 50 (33-72) years. The patients who underwent S9 and/or S10 segmentectomy were divided into a single-direction group (pulmonary ligament approach, n=19) and a bi-direction group (intersegmental tunneling, n=19) according to different approaches, and the perioperative outcomes between the two groups were compared. Results    All patients successfully completed the operation, without conversion to thoracotomy and lobectomy, serious complications, or perioperative death. The median operation time was 100 (40-185) min, the blood loss was 50 (10-210) mL, and the median number of dissected lymph nodes was 3 (1-14). There were 4 (5.1%) patients with postoperative air leakage, and 4 (5.1%) patients with hydropneumothorax. No patient showed localized atelectasis or lung congestion at 6 months after the operation. Further analysis showed that there was no significant difference in the operation time, blood loss, thoracic drainage time, complications or postoperative hospital stay between the single-direction and bi-direction groups (P>0.05). However, the number of dissected lymph nodes of the bi-direction group was more than that of the single-direction group [6 (1-13) vs. 5 (1-9), P=0.040]. Conclusion    The robotic lung basal segmentectomy for pulmonary nodules is safe and effective. The  perioperative results of robotic S9 and/or S10 complex segmentectomy using intersegmental tunneling and pulmonary ligament approach are similar.