Objective:To study the predictive value of combining alpha-feto protein (AFP) with contrast-enhanced MRI imaging features in predicting incidence of microvascular invasion (MVI) in patients with hepatocellular carcinoma.Methods:The data of 206 patients with hepatocellular carcinoma treated at Tianjin Medical University Cancer Institute and Hospital from January 2017 to April 2019 were retrospectively analyzed. There were 179 males and 27 females, with an average age of 58.7 years. The roles of preoperative MRI imaging features and clinical data on predicting the incidence of MVI in patients with hepatocellular carcinoma were evaluated by univariate and multivariate logistic regression analyses. Multivariable regression analysis was then used to plot a nomogram.Results:There were 86 patients (41.7%) with MVI positivity and 120 patients (58.3%) with MVI negativity. Multivariate logistic regression analysis showed that AFP >400 μg/L ( OR=3.318, 95% CI: 1.243-8.855, P=0.017), two-trait predictor of venous invasion (TTPVI) ( OR=13.111, 95% CI: 6.797-28.119, P<0.001), diffusion weighted imaging/T 2 weighted imaging (DWI/T 2WI) mismatch ( OR=17.233, 95% CI: 4.731-44.490, P<0.001), and rim enhancement( OR=5.665, 95% CI: 2.579-18.152, P=0.013) predicted increased risks of MVI in patients with hepatocellular carcinoma. The constructed nomogram directly predicted the risk of MVI in these patients. Conclusions:AFP>400 μg/L, TTPVI, DWI/T 2WI mismatch and rim enhancement were independent risk factors in predicting MVI in patients with hepatocellular carcinoma. This predictive model of MVI which was based on multivariate logistic regression analysis was helpful to clinicians in making individualized treatment plans for patients with hepatocellular carcinoma.

Objective To investigate the impact on the endothelial cell function and renal blood flow through effective treatment for elderly patients with hypertension. Methods 64 cases of elderly hypertensive patients over 70years old with effective treatment, according to pre-treatment blood pressure, were divided into two groups: hyptension level-2 group(30cases) and hypertension level-3 group(34cases), and 30 cases of elderly people with health physical examination during the same period were setlected as the control group. Endothelial cell function was detected, including the endothelin-1 (ET-1)、 nitrous oxide (NO), thromboxane B2 (TXB2)、 6-keto-prostaglandinF1α (6-K-PDGF1α) in plasma. Renal blood flow was explored by color doppler ultrasonic instrument ,involving peak velocity in systole(PSV) and lowest velocity in end-diastole(EDV) of renal arteries, segmental arteries and interlobar arteries.After indicators had reached the standard 1 month in the hypertension level-2 and hypertension leve1-3 patients with effective antihypertensive therapy, the difference of ET-1, NO, TXB2,6-k-PGF1o and PSV, EDV among the three groups were compared. Results The differences were statistically significant in ET-1, NO, TXB2,6-k-PGF1α, PSV and EDV before treatment among three groups (P ＜ 0.05). After blood pressure treated had reached the standard 1 month,indicators were no statistically meaningful difference among the three groups (P ＞ 0.05). Conclusion After effective clinical treatments, the endothelial cell function and renal blood flow of the elderly hypertensive patients can be improved. At the same time, to delay renal damage in elderly patients with hypertension provide a theoretical basis.

Human parvovirus B19, generally referred to as B19 virus, has been closely associated with a variety of different autoimmune diseases due to the features of its capsid protein. B19 virus VP1 unique region protein that has sites of phospholipase A2 and several antigenic determinants is exposed on the outside of the viral capsid protein. As a result of that, B19 virus VP1 unique region protein can stimulate the host to produce autoantibodies, which induces and/or aggravates the autoimmune diseases. The biological characteristics of B19 virus VP1 unique region protein and its relationships with autoimmune diseases are de-scribed in this review based upon the published literatures and the work achieved by our research team. This review will be helpful to the prevention and treatment of B19 virus infection.

Objective To investigate risk factors and characteristics of the pathogens for hospital-acquired pneumonia(HAP) in elderly psychiatric patients Methods Data were collected from 259 psychiatric patients aged over 60 hospitalized between January 2012 and December 2014,and risk factors for HAP and characteristics of the pathogens were analyzed.Results The incidence of HAP in the elderly psychiatric patients was 40.4％.Main risk factors for HAP included long-term bed rest,dysphagia,specific types of mental illness,underlying comorbidities,length of hospitalization,psychiatric medications,and age.A total of 137 pathogenic microbialstrains were isolated,of which,Gram-negative species accounted for 55.47％,with 32.12 ％ as Gram-positive species and 12.41 ％ as fungal species.Conclusions The main risk factors for HAP in elderly psychiatric patients are long-term bed rest,dysphagia,specific types of mental illness,underlying comorbidities,length of hospitalization,psychiatric medications,and age.The most common pathogens are Gram-negative microorganisms,followed by Gram-positive microorganisms and fungi.It is very important to take proactive measures to prevent the occurrence of HAP and improve prognosis.

Objective To screen for serum protein differentially expressed between women whose fetuses had congenital heart defects(CHD) and women who had normal fetuses. Methods Serum samples were collected from pregnant women whose fetuses had CHD and those whose fe?tuses had no CHD,including a CHD group of 40 women and a control group of 10 women. The CHD group included 4 subgroups as follows:tetralo?gy of Fallot,ventricular septal defects,persistent truncus arteriosus,and a mixture of relatively rare types of CHD(n=10 each). Samples in the same group were pooled to obtain equal amounts of proteins ,and the iTRAQ proteomic approach was used to identify and quantify the proteins dif?ferentially expressed among these groups. Results We successfully identified 606 proteins,among which 47 showed at least a 1.5?fold difference between the CHD and control groups. Among the 47 proteins,23 and 24 were upregulated and downregulated,respectively. Conclusion Several proteins associated with CHD could be identified by using the iTRAQ proteomic approach ,and various proteins were involved in the pathogenesis of CHD in this study.

Objective To explore the role of pregabalin on the expression of c-fos in spinal dorsal horn of the rat with neuropathic pain.Methods Thirty Wister rats (male) were divided into shamoperated group,model group and pregabalin group,with 10 cases in each group.The effect of the pregabalin on the heat pain threshold and expression of c-fos in spinal dorsal horn of the rat with neuropathic pain were observed.Results The heat pain threshold in model group at 3rd,4th,5th,6th,7th,10th and 14th day after operation was significantly lower than that in sham-operated group and pregabalin group at same time (P ＜ 0.05).The heat pain threshold in pregabalin group was lower than that in sham-operated group from 2nd day after operation,but there was no significant difference (P ＞0.05).At the 14th day after operation,the number of Fos-like-immunoreactivity (FLI) positive cells in sham-operated group,model group and pregabalin group was (16.4 ± 0.6),(66.7 ± 3.3) and (22.8 ± 1.5)cases,and the number of FLI positive cells in model group was significantly higher than that in shamoperated group and pregabalin group (P ＜ 0.05).Conclusions Pregabalin has analgesic activity on rat with neuropathic pain.Pregabalin activates spinal cord glial cells raisedby the injured peripheral nerve and infection,and also reduces the noxious stimulation of afferent pain to spinal dorsal horn neurons.

Objective To compare the efficacy and safety of solitaire stent thrombectomy versus intravenous thrombolysis for treatment of elderly stroke patients with acute vertebrobasilar occlusion.Methods Clinical data of 76 patients with acute vertebrobasilar occlusion at the neurology department of Anyang People's Hospital from May 2014 to July 2017 were retrospectively analyzed.Patients were divided into two groups:solitaire stent thrombectomy group (n =30)and intravenous thrombolysis group (n =46).Recanalization rates,score improvement rate in National Institutes of Health Stroke Scale (NHISS)after 24 hours of treatment,symptomatic intracranial hemorrhage rate and mortality at 90 days after treatment were compared between the two groups.Results The recanalization rate,NIHSS score improvement rate at 24 hours after treatment and the improvement rate of Modified Rankin Scale(mRS)score at 90 days after treatment were significantly higher in the solitaire stent thrombectomy group than in the intravenous thrombolysis group[86.7％ (26/30)vs.45.7％(21/46),66.7％(20/30)vs.34.8％(16/46),53.3％ (16/30)vs.23.9％(11/46),x2 =6.543,3.900 and 3.761,P =0.012,0.041 and 0.046,respectively].No significant difference in incidence of intracranial hemorrhage was found between the two groups [6.7 ％ (2/30) vs.19.6 ％ (9/46),x2=0.813,P=0.357].The mortality at 90 days after treatment were significantly lower in the solitaire stent thrombectomy group than in the intravenous thrombolysis group [0.0％ (0/30)vs.30.4％ (14/46),P =0.017].Conclusions Solitaire stent thrombectomy versus intravenous thrombolysis has better efficacy and higher safety in treating acute stroke due to vertebrobasilar occlusion in elderly patients.

Objective: To investigate the prognostic value of chest computed tomography (CT) characteristics in crizotinib-treated pa-tients with advanced non-small cell lung cancer (NSCLC). Methods: Forty-seven patients with advanced ALK-rearranged NSCLC who re-ceived crizotinib treatment from January 2014 to March 2017 were enrolled in this retrospective study. Pre-treatment CT characteris-tics were evaluated. Patients were followed up after crizotinib treatment, and the best overall response and progression-free survival (PFS) were assessed according to the Response Evaluation Criteria in Solid Tumors (RECIST version 1.1). Results: The median PFS of all patients was 10 months. There was no association between CT characteristics and response. In univariate analysis, large tumor size (P=0.009), central type (P=0.002), consolidation of surrounding lung tissue (P=0.002), pleural effusion (P=0.001), and lymphangitic carcino-matosis (P=0.019) suggested a poor prognosis. Multivariate Cox regression analysis showed that location (hazard ratio, 3.219; 95% con-fidence interval: 1.517-6.833; P=0.002) was an independent prognostic predictor. Conclusions: Pre-treatment CT characteristics are useful in predicting the PFS of crizotinib-treated patients with advanced NSCLC harboring ALK rearrangement.

To investigate the correlation between magnetic resonance imaging (MRI) features and tumor risk grade of gas-trointestinal stromal tumors (GISTs). Methods: Between September 2007 to December 2017, 54 patients who underwent MRI and were pathologically diagnosed in Tianjin Medical University Cancer Institute and Hospital were retrospectively reviewed. We analyzed MRI features including the size, location, shape, boundary, and growth pattern of the tumor; cystic necrosis; metastasis; T1WI and T2WI signal intensities; enhancement signal intensity-time (SIT) curve pattern; and average apparent diffusion coefficient (ADC) val-ues. The MRI features were compared with the tumor risk grade. Results: Of the 54 cases, 16 were of low-risk grade, 13 were of inter-mediate-risk grade, and 25 were of high-risk grade. Statistical analysis showed that tumor size, location, shape, boundary, cystic necro-sis, signal intensity, and average ADC values were correlated with tumor risk grade (P<0.05). However, tumor growth pattern, metasta-sis, and enhancement SIT curve pattern were not correlated with tumor risk grade (P>0.05). GISTs with higher aggressive features were more likely to have larger size, irregular shape, unclear boundary, cystic necrosis, heterogeneous signal intensity, and lower ADC values on MRI. Conclusions: MRI has the potential to predict the risk grade of GISTs before surgery, thereby guiding clinical manage-ment, and evaluating prognosis.

Objective To compare clinical characteristics between acute exacerbated chronic obstructive pulmonary disease (AECOPD) patients with chronic bronchitis phenotype and emphysema phenotype.Methods A total of 73 AECOPD patients with chronic bronchitis phenotype and 82 AECOPD patients with emphysema phenotype in Tibet Chengdu Branch Hospital,West China Hospital,Sichuan University from January 2014 to November 2016 were selected.All patients had completed lung function tests,basic information collection,modified medical research council dyspnea scale (MMRC),and COPD assessment test (CAT).The serum samples were collected to detect C-reactive protein (CRP).The clinical characteristics,lung function,complications and systemic inflammation between the two groups were compared.Results There was no difference in body mass index (BMI),CAT score,serum CRP level and length of hospital stay between the AECOPD patients with chronic bronchitis phenotype and emphysema phenotype (P＞0.05).Compared with AECOPD patients with chronic bronchitis phenotype,the AECOPD patients with emphysema phenotype have longer smoking history,higher MMRC score,and more severe lung function impairment (P＜0.05).Conclusion AECOPD patients with chronic bronchitis phenotype and emphysema phenotype have different clinical characteristics,those with emphysema phenotype have more severe dyspnea and lung function impairment.