Utility of Tissue Similarity Maps Based on Relative Cerebral Blood Volume for Grading Gliomas as Validated by Histological Results

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Clinical outcomes after percutaneous coronary intervention for early versus late and very late stent thrombosis: a systematic review and meta-analysis

Journal of Thrombosis and Thrombolysis - Whether the clinical outcomes of stent thrombosis (ST) are different when stratified by time of occurrence remains unclear. The objective of this study was...     

Antibody to Hepatitis B Core Antigen Levels in the Natural History of Chronic Hepatitis B: A Prospective Observational Study

Previous studies have revealed antibody to hepatitis B core antigen (anti-HBc) levels as a predictor of treatment response in hepatitis B early antigen (HBeAg)-positive chronic hepatitis B (CHB) patients in both interferon and nucleos(t)ide analog therapy cohorts. However, there is no information about anti-HBc levels in the natural history of CHB.This study aimed to define anti-HBc levels of different phases in the natural history of CHB.Two hundred eleven treatment-naive CHB patients were included in the study. They were classified into 4 phases: immune tolerance (IT) phase (n = 39), immune clearance (IC) phase (n = 48), low or no-replicative (LR) phase (n = 55), and HBeAg-negative hepatitis (ENH, n = 69). Fifty patients who were HBsAg negative and anti-HBc positive were also recruited as past HBV infection (PBI) control group. Anti-HBc levels were measured by a newly developed double-sandwich immunoassay. Correlation of anti-HBc levels with alanine aminotransferase (ALT) and other HBV-related markers within each phase was performed.Serum anti-HBc levels were statistically significant between patients in different phases of CHB (P < 0.001). The median anti-HBc levels were: IT (3.17 log₁₀ IU/mL), IC (4.39 log₁₀ IU/mL), LR (3.29 log₁₀ IU/mL), ENH (4.12 log₁₀ IU/mL), and PBI (0.61 log₁₀ IU/mL). There existed a strong correlation in IC (r = 0.489, P < 0.001), a poor correlation in ENH (r = 0.275, P = 0.042), and no correlation in patients with ALT reached 5 times upper limit of normal (r = 0.120, P = 0.616).Anti-HBc levels show significant differences during the natural course of CHB. These results may provide some potentially useful insights into hepatitis B pathogenesis and immune activation against hepatitis B virus.     

A new lignan glycoside from Trigonostemon heterophyllus

Phytochemical investigation on the stems of Trigonostemonheterophyllus led to the isolation of a new lariciresinol-based lignan glycoside, trigonoheteran (1), together with a known lignan glycoside, aviculin (2). Their structures were elucidated by spectroscopic methods including 1D and 2D NMR (HMQC, ¹H–¹H COSY, HMBC, and NOESY).     

Benefit of radiotherapy for 90 patients with resected intrahepatic cholangiocarcinoma and concurrent lymph node metastases

Purpose  

To evaluate the role of radiotherapy for patients with resected intrahepatic cholangiocarcinoma with concurrent macroscopic abdominal lymph node metastases.     

A Preliminary Observation on Auto-Cholinergic Synapse Dysfunction in Patients with Different Types of Epilepsy

Abstract: Serum anti-acetylcholine receptor antibodies (A AchFt Ab) and anti-synaptic premembrane antibodies (A PrM Ab) were measured in 21 :patients with absence epilepsy, 21 :cases with benign childhood epilepsy with centro-temporal spikes (BCECTs) and 13 :cases with atypical epilepsy. Respectively, in five (23.8%), eleven (51.2%) and eight (66.7%) of the above mentioned groups of patients both A AchR Ab and A PrM Ab were found.     

糖尿病和非糖尿病白内障患者结膜囊菌群及耐药性的比较

目的：研究糖尿病和非糖尿病白内障患者结膜囊的细菌种类及其药物敏感性,指导糖尿病患者和非糖尿病患者抗生素滴眼液的应用和术前消毒,降低感染性眼内炎的发生率。

方法：将2013-11/2017-01在本院行白内障超声乳化手术的患者124例124眼按照有无2型糖尿病分为非糖尿病组(87例87眼)和糖尿病组(37例37眼),观察术眼消毒前(T0)、术眼消毒后(T1)、手术结束时(T2)结膜囊的细菌培养结果和细菌药物敏感性检测结果。

结果：糖尿病组患者结膜囊细菌检出率在T0、T1和T2时均明显高于非糖尿病组患者。多数菌株对万古霉素、左氧氟沙星、妥布霉素的敏感性较好,对青霉素、阿奇霉素和四环素的耐药性较强。

结论：糖尿病患者由于眼表微环境的改变,结膜囊细菌检出率明显升高。表皮葡萄球菌和丙酸痤疮杆菌是两种主要的结膜囊检出菌。左氧氟沙星和妥布霉素对结膜囊检出菌的药物敏感性较好,可作为术前常规使用的抗生素滴眼液。     

PTEN基因转染的胶质瘤细胞对γ刀照射敏感性的变化

目的:观察转入正常PTEN基因的胶质瘤细胞经γ刀照射后生长能力及黏附力的改变,探索PTEN基因对胶质瘤细胞放射敏感性的影响.方法:以RT-PCR方法体外扩增PTEN全长基因,与质粒pcDNA3.1连接,构建重组真核载体pcD-NA3.1-PTEN,并用之转染PTEN失活的U251细胞(人胶质母细胞瘤细胞系),用48 h的半数致死剂量(中心剂量和周边剂量分别为9.00和4.50 Gy)进行γ刀等中心照射,并采用MTT法和纤维粘连蛋白黏附实验观察照射前后细胞的生长及黏附力改变.结果:空载体转染组与未转染组照射前后细胞存活率和黏附率均无显著性差异,而PTEN基因转染的细胞存活率及黏附率在照射前后均显著低于空载体转染组及未转染组(P＜0.01),且照射后下降程度更加明显.结论:PTEN基因转染的胶质瘤细胞对于γ刀照射的敏感性提高.     

Activation of the Nrf2-ARE signal pathway after blast induced traumatic brain injury in mice

Background: Treatment of blast-induced traumatic brain injury (bTBI) has been hindered. Previous studies have demonstrated that oxidative stress may contribute to the pathophysiological process. The nuclear factor erythroid 2-related factor 2 (Nrf2)-antioxidant response element (ARE) signaling pathway exhibits a protective effect after traumatic brain injury (TBI). This study explored whether the Nrf2-ARE pathway was activated in a modified bTBI mouse model.

Method: Mice were randomly divided into six groups: the 6?h, 1 d, 3 d, 7 d and 14 d after bTBI groups and a sham group. The protein levels of nuclear Nrf2, heme oxygenase-1 (HO-1) and NAD(P)H: quinone oxidoreductase-1 (NQO1) were detected using western blot, and HO-1 and NQO1 mRNA levels were determined by real-time quantitative polymerase chain reaction. Moreover, HO-1 and Nrf2 were localized using histological staining.

Results: The protein level of the Nrf2-ARE pathway in the frontal lobe increased significantly in the 3 d after bTBI. The HO-1 and NQO1 mRNA levels also reached a peak in the frontal lobe 3 d after bTBI. The histological staining demonstrated higher expression of HO-1 in the frontal lobe and hippocampus 3 d after bTBI, when nuclear import of Nrf2 reached a peak in the frontal lobe.

Conclusions: bTBI activated the Nrf2-ARE signaling pathway in the brain. The peak activation time in the frontal lobe may be 3 d after injury, and activating the Nrf2 pathway could be a new direction for treatment.