Objective To explore the significance of serum VEGF-A and VEGF-C levels in relation to conventional clinopathological parameters of gastric carcinoma,investigate the relationship between serum VEGF-C level and expression of VEGF-C in carcinoma tissue.Methods 28 patients with gastric carcinoma and 21 healthy controls were included in the current study.Serum VEGF-C and VEGF-A levels were assessed by enzymed-linked immunosorbent assay(ELISA).The expression of VEGF-C protein in gastric carcinoma tissue from 28 patients who underwent curative gastrectomy was examined by immunohistochemistry.Results Serum VEGF-C and VEGF-A levels were higher in patients with gastric carcinoma than those in the healthy controls(P

This survey was to assess physicians' quality of life within tertiary hospitals in Beijing.SF-36 was used to analyze and compare 160 physicians with normal models. There was significant difference in mental health score between out-patient physicians and general populations (P<0.01). However, there was significant difference in general health (P<0.05), vitality (P<0.01), social function (P<0.01),and mental health (P<0.01) scores between emergency physicians and general populations. There was significant difference in general health (P<0. 05), vitality (P<0.01), social function (P<0. 01), and mental health (P<0.01) scores between emergency physicians and out-patient doctors. Out-patient doctors' quality of life is better than emergency physicians. Emergency physicians might live in sub-health status.

Objective To optimize the enzymolysis technology of ginsenoside Rg1.Methods Taking ginsenoside Rg1 content as the index,orthogonal design method was used for optimization and HPLC for determination.Results Cellulase enzymolysis was the best extracting process,and enzyme amount,enzymolysis time,and enzymolysis temperature had obvious effect on the extraction of ginsenoside Rg1.The optimum extraction technologies were as follows: cellulase amount was 1.4%,enzymolysis time 60 min,the enzymolysis temperature 45 ℃.Conclusion The optimization extraction technology is simple,steady,and the extracting rate is high.

Objective:To evaluate arthroscopy-assisted tibial bone tunnel fixation combined with double-row anchors in the treatment of tibial eminence fracture.Methods:The 23 patients were retrospectively analyzed who had been treated at Department of Orthopedics, Beiing Shunyi District Hospital for tibial eminence fractures by arthroscopy-assisted tibial bone tunnel fixation combined with double-row anchors from October 2015 to December 2019. They were 15 males and 8 females, aged from 12 to 55 years (average, 35.5 years). All the injuries were unilateral (14 right and 9 left sides). According to the modified Meyers-McKeever classification, 2 cases belonged to type Ⅱ, 18 cases to type Ⅲ and 3 cases to type Ⅳ. Range of motion of the knee, Lysholm and International Knee Documentation Committee (IKDC) scores were observed before surgery, 1 month and 12 months after surgery. The anterior tibial slope angle (ATSA) on CT was measured preoperatively and 1 month after surgery for evaluation of fracture reduction.Results:All the 23 patients were followed up for an average of 23 months (from 12 to 52 months). Postoperatively, limited knee movement was observed in 2 patients and non-anatomic reduction in one patient. At 1 month and 12 months after operation, the Lysholm scores (61.4 ± 3.5 and 90.4 ± 4.3) and IKDC scores (69.6 ± 4.2 and 88.5 ± 3.0) were significantly improved compared with the preoperative values (45.4 ± 6.8 and 49.6 ± 3.9, respectively) ( P<0.05). ATSA was significantly restored from preoperative 4.2° ± 5.7° to -11.7° ± 2.9° at 1 month after operation ( P<0.05). Conclusion:In the treatment of tibial eminence fracture, arthroscopy-assisted tibial bone tunnel fixation combined with double-row anchors can achieve anatomical reduction and firm fixation, leading to satisfactory surgical outcomes.

Objective To investigate MRI features for differentiating borderline from benign mucinous cystadenoma ( MC )of the ovary.Methods Twenty three patients with 23 benign MCs and 19 patients with 20 borderline mucinous cystadenomas (BMC)proven by surgery and pathology underwent MRI,with 23 benign MCs and 20 BMC. MRI features of tumor were evaluated and compared between two groups including location,shape,size,loculation,signal intensity of the fluid,thickness of septa and wall,and vegetations.The findings were correlated with those of pathology.The loculation,the signal intensity of the intracystic content,the thickness of the septation and the wall,and the vegetations between the benign MCs and the BMCs were compared using the Chi-square test.ResultsHomogenous low signal on T1WI and homogenous high signal on T2WI were the main signal patterns of benign MC seen more commonly in benign MC (18/23 and 17/23,respectively) than in BMC (5/20 and 8/20,respectively) (x2 =12.1979,5.0553 ;P ＜0.05).The honeycomb loculi,high signal on T1 WI,low signal on T2WI,thickened septa or wall ( ≥5 mm),and vegetations ( ≥5 mm) were significantly more common in BMC( 10/20,9/20,8/20,10/20 and 14/20,respectively)than in benign MC(4/23,3/23,1/23,1/23 and 1/23,respectively) (x2 =5.1804,5.4300,8.2163,11.7113 and 20.2990,P ＜ 0.05 ),with the sensitivity and specificity for characterizing BMC of 50.0％ and 82.6％,45.0％ and 87.0％,40.0％ and 95.7％,50.0％ and 95.7％,and 70.0％ and 95.7％,respectively.When one of honeycomb loculi with low signal on T2WI,thickened septa or wall ( ≥5 mm),and vegetations ( ≥5 mm) were found,the sensitivity,specificity and accuracy for characterizing BMC were 90.0％,91.3％ and 90.7％ respectively. Conclusion MRI is accurate for demonstrating morphological features of ovarian MC which well correlated to pathological characteristics,and for differentiating BMC from benign MC,thus helpful for making surgery strategy.

Objective To investigate the ability of proton magnetic resonance spectroscopy (1H-MRS) for differentiating benign from malignant solid adnexal tumors. Methods One-hundred and six patients (114 tumors) with surgically and histologically proven solid adnexal tumors (44 benign, 70 malignant) underwent conventional MR imaging and 1H-MRS. Single-voxel spectroscopy was performed using the point resolved spectroscopy localization technique with a voxel size of 2.0 cm × 2.0 cm × 2.0 cm. Resonance peak integrals of choline (Cho), N-acetyl aspartate (NAA), creatine (Cr), lactate (Lac), and lipid (Lip) were analyzed and the Cho/Cr, NAA/Cr, Lac/Cr and Lip/Cr ratios were recorded and compared between benign and malignant tumors using independent two-sample t test. Receiver operating characteristic (ROC) curve analysis was used to evaluate the diagnostic performance of Cho/Cr ratio for differentiating benign from malignant tumors. Results A Cho peak was detected in all 114 tumors, NAA peak in 112 tumors (43 benign and 69 malignant), Lip peak in 70 tumors (21 benign and 49 malignant), and Lac peak in 16 tumors (7 benign and 9 malignant). The Cho/Cr and Lip/Cr ratios were 4.8±2.5, 6.4±4.0 in benign versus 9.6 ± 3.3, 10.5 ± 4.6 in malignant solid adnexal tumors, respectively, with a statistically significant difference (t values were-8.826 and-2.915,P<0.05). The NAA/Cr ratio were 1.4 ± 0.7 in benign versus 1.6 ± 1.0 in
malignant solid adnexal tumors, with no statistically significant difference (t=-1.523,P>0.05). When the Cho/Cr threshold was 7.2 for differentiating between benign and malignant tumors, the sensitivity, specificity, accuracy were 80.0%(56/70),88.6%(39/44) and 83.3%(95/114) respectively. Conclusions The 1H-MRS patterns of benign and malignant solid adnexal tumors differ. The Cho/Cr ratio can help clinicians differentiate benign from malignant tumors.

Objective To investigate the distribution and severity of cerebral artery stenosis and the prognosis in elderly patients with acute cerebral infarction using digital subtraction angiography (DSA). Methods The 432 elderly patients with acute cerebral ischemia infarction underwent DSA,and they were divided into two groups: elderly group (n= 320) and non-elderly group (n= 112). The characteristics of distribution and severity of cerebral artery stenosis, the relationship between artery stenosis and relative risk factors, and the prognosis of acute cerebral infarction were analyzed.Results In elderly group, 270 cases (84.3%) had intra- and extra- cranial artery stenosis, of which 98 patients (30.6%) with pure extracranial arterial stenosis, 132 patients (41.3%) with combined extra- and intra-cranial artery stenosis. They were both significantly higher than the corresponding data in non-elderly group [23 cases (20.5%) and 28 cases (25%), P＜0.05 and 0.01]. The prevalences of moderate and severe cerebral artery stenosises were higher in elderly group than in nonelderly group [224 locations (52.1%) vs. 51 locations (40.8%), P＜0. 05]. The number of patients with previous history of cerebrovascular disease was much more and the prognosis was much worse in elderly group than in non-elderly group (both P＜0.05), Conclusions The elderly patients with cerebral infarction have severer cerebral artery stenosis, increased proportion of multivessel disease and poor prognosis. So it is very important to take aggressive treatment as soon as possible, and to make secondary prevention and effective rehabilitation so as to improve their prognosis.

Aim To investigate the effects of pyrrolidine dithiocarbamate (PDTC) on D-galactosamine/lipopolysaccharides (GalN/LPS)-induced acute apoptotic liver injury and its mechanism.Methods All mice were randomly divided into four groups.Mice in GalN/LPS group were co-injected with GalN (600 mg·kg~(-1),ip) and LPS (20 μg·kg~(-1), ip). Mice in PDTC+GalN/LPS group were injected with two doses of PDTC,one (100 mg·kg~(-1), ip) at 24 h before LPS and the other at 2 h before LPS (20 μg·kg~(-1), ip).Mice in control groups were treated with PDTC (100 mg·kg~(-1), ip) or saline. Ten mice in each group were observed for animal survival within 72 h after LPS treatment. Six mice in each group were sacrificed 1.5 h after LPS for collecting blood and isolating livers. The expression of hepatic TNF-α mRNA was determined by reverse transcription and polymerase chain reaction (RT-PCR). Hepatic nuclear factor-κB (NF-κB) binding activity was measured with electrophoretic mobility shift assay (EMSA).Twelve mice in each group were sacrificed 8 h after LPS treatment. Serum was collected for measurement of alanine aminotransferase (ALT) and hepatocellular apoptosis and histological examination.Results Co-injection of GalN and LPS markedly increased serum ALT activity. Histopathological examination of liver sections revealed that GalN/LPS induced hepatic congestion, necrosis and massive macrophages infiltration, and increased the number of TUNEL-positive cells in mouse liver.GalN/LPS treatments, led to 90% mortality within 72 h with severe congestion and necrosis in the liver of all the dead mice. PDTC pretreatment significantly inhibited GalN/LPS-induced hepatic NF-κB activation and TNF-α expression. In contrast, PDTC aggravated GalN/LPS-triggered hepatocellular apoptosis, increased serum ALT activity, exacerbated hepatic hemorrhage and necrosis, and accelerated death.Conclusion PDTC aggravates GalN/LPS-induced acute apoptotic liver injury via inhibiting NF-κB-mediated anti-apoptotic effects.

Objective To analyze the residents′ willingness to hierarchical medical system and their intention of first visit hospitals.Methods Customized questionnaire was used for in-home survey of 1 500 households in three cities of Shandong province,with 773 of the residents aware of hierarchical medical system used as the study samples.Descriptive analysis and multi factor Logistic regression were employed for statistical analysis of their intention.Results 85.0% the residents expressed willingness to embrace hierarchical medical system.55.0% of the residents prefer primary medical institutions as their first visit in case of mild illness,a choice chosen by more rural residents(58.9%)than urban residents(48.0%),a difference of statistical significance(P<0.01).In the case of severe illness,87.3% of them prefer major hospitals as their first visit,and more urban residents(94.3%)take this option than the rural residents(83.3%),a difference of statistical significance(P<0.01).Service ability of medical institutions and residents′ concept for medical service played a key role in their choice of first visit hospitals.Conclusions The key to ensuring the implementation effect of hierarchical medical system lies in better service ability of primary medical institutions and correction of residents′ irrational medication concepts.

Aim To explore antitumor mechanism of a recombinant vaccinia virus containing the human CEA-cDNA (rV-CEA). Methods C57/BL mice were immunized three times with rV-CEA. Six weeks later, the macrophages(MΦ s)and splenocytes from rV-CEA-immunized donors were transferred to CEA＋ -HePa tnmor-bearing recipients,Meanwhile, the antitumor effects of these donor's MΦ s and splenocytes and that of the recipient's splenocytes were detected in vitro. Results The MΦ s and splenocytes from rV-CEA-immunized donors possessed strong antitumor activity in CEA-positive tumor-bearing recipients. The in vitro antitumor effect of splenocytes from mice inoculated with MΦ s from rV-CEA-immunized donors were markedly stronger than those from W-VV-immunized donors. However,the in vitro antitumor effect of the MΦ s from rV-CEA-immunized donors was the same as those from W-VV-immunized donors. Conclusion It is demonstrated that antitumor activity induced with rV-CEA may be mediated mainly by antigen present cells (the MΦ s), which activated tumor-specific T cells to kill tumor cells.