80%). The resulting bulk cultures were mainly comprised of a CD56~- subset of ??T cells. The expression of V?1, V?2 and V?3 gene families in the ex vivo multiplied ??T cells from TIL and PBMC of patients with NPC, and PBMC of normal control was demonstrated by RT-PCR. Conclusion The ??TIL of NPC can be multiplied in vitro for the first time. The subsets (V?1, V?2 and V?3) of ??T cells from PBMC of healthy individuals, PBMC and TIL of patients with NPC, can also be multiplied in vitro, and the experiment lays an experimental foundation of using ??T cells for the cellular adoptive therapy in patients with NPC.

The relationship between thyroid diseases and cerebrovascular diseases is getting increasingly attention. Studies have shown that thyroid diseases are associated with many kinds of cerebrovascular diseases, such as ischemic cerebrovascular disease, moyamoya disease, cerebral venous thrombosis, and artery dissection. This article review the advances in research on the correlation between thyroid diseases and cerebrovascular diseases.

Objective To investigate the molecular mechanism for change in permeability in brain microvascular endothelial cells (bEnd.3) induced by lipopolysaccharide (LPS). Methods Monolayers of bEnd.3 were exposed to LPS,in the presence or absence of exoenzyme C3 transferase. We monitored the monolayer barrier integrity by transendothelial electrical resistance assay (TEER),activity of RhoA by pull down assay,NF-κB by luciferase reporter assay,and F-actin dynamic structure by Rhodamine-phalloidin staining. Results Incubation of monolayers with LPS caused substantial barrier hyperpermeability. Under the had been treated for 3 and 12 h with LPS (P＜0.05). Such effects could be inhibited partly by pretreatment of RhoA inhibitor exoenzyme C3 transferase. LPS activated RhoA and NF-κB at 0.5 h. The C3 transferase could significantly reverse the NF-κB activation (P＜0.05). The F-actin rearrangments displayed in a time-dependent manner and occurred originally after the stimulation of LPS for 3 h,which could be diluted by the pretreatment of C3 transferase as well. Conclusion LPS induces the disruption of F-actin cytoskeleton and brain microvascular endothelial barrier integrity,in part,through RhoA and NF-κB activation. The mechanism underlying this pathophysiological effect of RhoA is to influence the disruption of the F-actin cytoskeleton by regulating NF-κB activites.

Objective To prospectively evaluate the risk factors of complete resection in early gastric cancer (EGC) with endoscopic submucosal dissection (ESD),and to guide the choice of treatment methods.Methods This study prospectively evaluated the endoscopic features of 66 EGCs,including the lesion size,presence or absence of ulceration,the extent of differentiation,invasion depth and entire margins of the EGC,then compared them with postoperative pathologic results and analysed these factors.Results The lesion size of the high grade intmepithelial neoplasia (H) group and the intramucosal carcinoma (M) group were mainly less than 30 mm (90.9％ vs.88.5％),but 57.1％ of the submucosal carcinoma (SM) were more than 30 mm.There was a significant difference between any two of three groups (P ＜ 0.05).Fourteen EGCs who got ulceration without invasion beyond mucosal muscularis underwent ESD successfully,and the basal or dissected margin had no residual tumor cells confirmed pathologically.And no tumor cell infiltration or lymph node metastasis was discovered.Of 45 EGCs with ESD,the underestimation rate for horizontal extent determined by white light and chromoendoscopy was higher than that of magnifying endoscopy with narrow-band imaging (ME-NBI) (15.6％ vs.2.2％,P ＜0.05).Diagnostic accuracy for the extent of differenciation by conventional endoscopy was 93.9％ (31/32,P ＞ 0.1),but it's unable to determine the extent of differentiation by ME-NBI.The accuracy of the group H was 84.8％ (28/33),that of M was 57.7％ (15/26),that of SM was 71.4％ (5/7),and there was a significant difference between group H and group M (P ＜ 0.05).Conclusion To achieve complete resection of EGC with ESD,the lesion more than 30 mm,presence of ulceration,undifferentiated type,deep infiltration should be considered as the risk factors,and it's also important to identify the horizontal extent of EGC to avoid unnecessary operation.

Objective:To investigate the correlation between mean platelet volume (MPV) and clinical outcome in patients with acute ischemic stroke (AIS) after intravenous thrombolysis.Methods:Consecutive patients with AIS treated with standard dose alteplase intravenous thrombolysis in the Department of Neurology, the Second People's Hospital of Hefei from July 1, 2019 to August 30, 2020 were enrolled retrospectively. The clinical, laboratory, and imaging data of the patients were collected. The modified Rankin Scale was used to evaluate the clinical outcome at 90 d after onset, and a score of >2 was defined as a poor outcome. Multivariate logistic regression model was used to analyze the independent correlation between MPV and clinical outcome. The receiver operating characteristic (ROC) curve was used to analyze the predictive value of MPV for clinical outcome. Results:A total of 104 patients with AIS who received intravenous thrombolytic therapy were included, including 40 males (38.5%), 64 females (61.5%), and their age was 68.7±12.5 years. The baseline median National Institutes of Health Stroke Scale (NIHSS) score was 6 (interquartile range, 4-11), and the time from onset to intravenous thrombolysis was (128.5±55.9) min. Seventy-five patients (72.1%) had a good outcome, 29 (27.9%) had a poor outcome, and there was no death. The baseline NIHSS score, C-reactive protein, MPV, MPV/platelet count ratio and the proportion of patients with anterior circulation infarction in the poor outcome group were significantly higher than those in the good outcome group (all P<0.05). Multivariate logistic regression analysis showed that MPV (odds ratio [ OR] 1.868, 95% confidence interval [ CI] 1.277-2.732; P=0.001) and baseline NIHSS score ( OR 1.199, 95% CI 1.083-1.328; P<0.001) were the independent risk factors for poor outcome. ROC curve analysis showed that the area under the curve for predicting poor outcome was 0.714 (95% CI 0.606-0.821; P=0.001). The optimal cut-off value was 11.25 fl, the predictive sensitivity and specificity were 65.5% and 70.5%, respectively. Conclusions:There was a significant independent correlation between MPV and the clinical outcome in patients with AIS after intravenous thrombolysis. A higher baseline MPV had a certain predictive value for poor outcome.

Objective To establish a molecular typing system of Staphylococcus aureus by using resolution melting for food-poi-soning fast tracing.Methods Primers were designed and synthesized according to the literature of VNTR in Staphylococcus au-reus ,and were used to perform molecular typing on the strains which had detected by PFGE,then 4 types of VNTRs were with higher discriminatory power were selected.On this basis,we established a molecular typing system for the detection of 59 Staphy-lococcus aureus isolated from food poisoning.Results The molecular typing system has good precision for detection.The standard deviation(s)of within-batch repetitive experiments were 0.03 -0.05 ℃,between-batch repetitive experiments were 0.04 -0.06℃,between-day repetitive experiments were 0.04-0.06 ℃.At the same time,the 59 strains of Staphylococcus aureus were divided into 19 types which were 11 epidemic clones and 8 sporadic clones.The correlation coefficient of Simpson was 0.916 4.Conclusion The molecular typing system for Staphylococcus aureus based on resolution melting was simple,fast and repeatable.It can be ap-plied to fast tracing and screen of Staphylococcus aureus in food poisoning.

Abstract: Objective To understand the phenotypic and genetic characteristics of Yersinia pestis strains isolated from Himalayan marmot natural focus area and domestic rat plague focus area in southern China, and provide reference for mastering the pathogenic characteristics of Yersinia pestis of two plague foci. Methods A total of 412 of Yersinia pestis strains isolated from Himalayan marmot plague focus and domestic rat plague focus of southern China were subjected to to sorbitol fermentation assays, virulence factor, different region (DFR) typing, and clustered regularly interspaced palindromic repeats (CRISPR) typing. Results The biochemical types of Y. pestis from the two plague foci showed distinct regional distribution features. Five biochemical phenotypes were identified in Yersinia pestis isolated from Himalayan marmot natural focus area, while only one biochemical phenotype was identified in strains isolated from the domestic rat plague focus of Southern China. Most of the Yersinia pestis isolated from the two plague foci were capable of producing the virulence factors of Fl and PstI. Among the strains from Himalayan marmot focus, 70.53% (201/285) were VW-positive, 75.09% (214/285) were Pgm-positive, 20.00% (57/285) of the strains were Pgm-negative, and 5.26% (15/285) were Pgm mixed-type strains. Among strains from domestic rat plague focus of southern China, 37.80% (48/127) were VW-positive, 29.13% (37/127) were Pgm-positive, 58.27% (74/127) were Pgm-negative, and 12.60% (16/127) were Pgm mixed-type strains. DFR typing revealed 22 genotypes of Y. pestis from the Himalayan marmot plague focus, with the main genotypes being type 5, 7, 8, 10, 19, 32 and 49. All strains from domestic rat plague focus area in southern China belonged to type 9. CRISPR typing revealed that all strains from the Himalayan marmot natural focus were classified into 7 CRISPR gene clusters and 14 CRISPR genotypes, with the main genotypes being G7, G22, G26-a1'and G22-A1'. All strains from domestic rat plague focus area in southern China belonged to CRISPR genotype G30, with the gene cluster being Ca8. Conclusions The phenotypes and genotypes of the Yersinia pestis of Himalayan marmot plague focus are diverse, with an obvious characteristics of geographical distribution. The phenotype and genotype of the Yersinia pestis of domestic rat plague focus of Southern China are single. DFR and CRISPR genotyping methods with phenotypic characteristics can effectively identify the Yersinia pestis isolated from the two plague foci, thereby meeting the needs of identification and traceability research.

Tacrolimus exhibits varied individual pharmacokinetic and a narrow therapeutic window, resulting in difficulties in personalized medication.In order to improve the safety of tacrolimus in clinical application and its efficiency and rationality in clinical practice, many countries and regions in the world have issued a number of guidelines for tacrolimus application.However, these guidelines generally aim at particular disease and race, and have certain limitation.In this article, the guidelines were explicated and analyzed in detail.Moreover, an individual tacrolimus medication recommendation for Chinese population was summarized based on the latest research of tacrolimus pharmacogenomics and therapeutic drug monitoring so as to provide assistance for the rational use of tacrolimus.

Objective To investigate the effects of physical exercises on cardiac function and plasma N-terminal pro-brain natriuretic peptide (NT-proBNP) levels in hypertensive patients combined with diastolic cardiac dysfunction.MethodsA total of 66 essential hypertension patients who had abnormal left ventricular relaxation and normal systolic function were assigned to the intervention group ( n =33 ; doing physical exercises once a day,5 days a week) or control group (n =33 ).All the patients received standard treatment.At 6 months,body weight,blood pressure,heart rate,NT-proBNP,and echocardiography were measured.ResultsAt 6 months,body weight [ (68 ± 7 ) kg vs (72 ± 8 ) kg ],systolic blood pressure [ (135.4 ±5.1) mm Hg (1 mm Hg =0.133 kPa) vs (141.9 ±5.2) mm Hg ],diastolic blood pressure [ (81.1 ±4.0) mm Hg vs (84.7 ±4.6) mm Hg],New York Heart Association class (1.4 ±0.3 vs 1.8 ±0.4),NT-proBNP level [ (526 ± 126 ) ng/L vs (741 ± 189 ) ng/L] were significantly decreased in the intervention group when compared with the control group ( all P ＜ 0.05 ) although left ventricular ejection fraction (LVEF) (62.9 ±6.7 vs 59.0 ±5.6) and E/A ratio ( 1.1 ±0.3 vs 0.9 ±0.3) were significantly increased ( both P ＜ 0.05).ConclusionPhysical exercises could play a role in reduced blood pressure and body weight and improved cardiac function in hypertensive patients with diastolic cardiac dysfunction.

Objective To investigate the effects of hypomagnesemia on the initial amount of hematoma and patient's condition at hospitalization in elderly patients with intracerebral hemorrhage (ICH).The 90 consecutive hospitalized patients with primary ICH were chosen for prospective cohort study in the Second Hospital of Anhui Medical University from February 2017 to May 2018.Methods Demographic and baseline data of patients were collected,and CT scan,serum magnesium concentration and other laboratory examinations after hospital admission were tested.Ninety patients were divided into two groups:hypomagnesemia group(serum magnesium ＜ 0.75 mmol/L,n =38) and normo-magnesemia group(0.75-1.25 mmol/L,n =52).The impact of serum magnesium level on the patient's initial volume of hematoma and critical condition at admission were analyzed.Results The median value of random blood glucose (7.29 mmol/L vs.6.44 mmol/L)and fibrinogen degradation products(3.43 mg/L vs.1.98 mg/L)were higher in the patients with hypomagnesemia than in the normal magnesium group.The median volume of initial volume of hematoma at admission was larger in patients with hypomagnesemia than in the normal magnesium group (20 cm3 vs.10 cm3).The median value of Glasgow coma scale at admission was lower in patients with hypomagnesemia than in the normal magnesium group(12.5 scores vs.14.0 scores).And their difference was statistically significant(U =-2.663,-2.951,-5.000 and-2.821 respectively,P =0.008,0.003,0.000 and 0.005).The correlation analysis showed that the initial volume of hematoma in patients with intracerebral hemorrhage was negatively correlated with the serum magnesium concentration at admission (r =-0.528,P =0.001).Conclusions Patients with hypomagnesemia has a larger hematoma volume and more serious disease condition.There is a significantly negative correlation between serum magnesium and hematoma volume of ICH.The serum magnesium level may become a predictor of ICH in the future.