Objective To investigate the trend of cytokines in patients with hemophagocytic lymphohistiocytosis (HLH) and analyze its significance.Methods 16 patients with HLH from January 2011 to May 2013 were selected.The patients were divided into remission group and death group by prognosis.Serums of the two groups were collected when they were hospitalized and at 7 th,14 th,21st,28th and 42nd day during chemotherapy,and they were fractionated HLH 1-6 groups and HLH a-d groups again,then the levels of IL-18,IL-10,IL-12,NF-κB,TNF-α and neopterin were tested by enzyme linked immuno sorbent assay (ELISA) to analysis their trend.Results The levels of all of cytokines in the remission group declined with chemotherapy,the difference between HLH1 group and another HLH groups was statistically significant (P ＜ 0.05).In the death group,the levels of NF-κB,IL-12 and neopterin had no downward trend with chemotherapy,and the difference between HLHa group and another HLH groups was not statistically significant (all P ＞ 0.05).The level of TNF-α declined with chemotherapy,and the differences between HLHa group and HLHc group,HLHa group and HLHd group were statistically significant (P =0.049,0.000).The level of IL-10 declined sharply in the first week of chemotherapy,and the difference between HLHa group and HLHb group was statistically significant (P =0.00).The level of IL-18 declined after the 2nd-weeks' chemotherapy,and the differences between HLHa group and HLHb group,HLHa group and HLHc group were statistically significant (P =0.03,0.02).Conclusions In the remission patients,the levels of serum IL-18,IL-10,IL-12,NF-κB,TNF-α and neopterin declined after chemotherapy.In the death patients,the downward trend is not obvious.It was preliminarily confirmed that the prognosis of HLH is related to the trend of cytokines during chemotherapy.

Objective To investigate the feasibility of reducing bolus?tracking monitor frequency in coronary CT angiography (CTA). Methods This prospective study including 120 patients with suspected coronary artery disease (CAD). According to the examination registration order, the patients were divided into groups A, B and C (n=40 for each group). All patients underwent coronary CTA with bolus?tracking technology, and were monitored at 10 s after the injection of contrast. The monitoring frequency of bolus?tracking for Group A was every 1.14 s, that for Group B was every 1.47 s , and for Group C was every 2.00 s, while the trigger threshold was set as 100 HU. To evaluate the image quality, the objective evaluation included signal noise ratio (SNR) and contrast noise ratio (CNR) of aorta (AO), CNR of left main coronary artery (LM) and right coronary artery (RCA), and the subjective score was recorded for each coronary artery segment. The monitoring times when CT density of the region of interest (ROI) reached the threshold, the CT value and the effective dose (ED) in the 3 groups were recorded. Objective image quality, monitoring parameters and radiation dose were compared using analysis of variance method, subjective image quality was compared withχ2 tests. Results There was no significant difference in AO (SNR and CNR), LM (CNR) and RCA (CNR) among the 3 groups, respectively (P>0.05). Subjective image quality scores of groups A, B, C were (1.879±0.042), (1.876±0.042), (1.881±0.042 ), with no significant difference (χ2=0.003,P>0.05). The monitoring times of to reach the threshold in groups A, B, C were (4.78±2.37), (3.76±1.39), (2.77±0.99), and ED were (0.058±0.031),(0.031±0.011), (0.021±0.007) mSv, with the significant difference (F=9.009, 31.998, respectively, P<0.01). Peak CT values during monitoring among three groups were (133 ± 24), (142 ± 39), (137±26) HU, respectively, with no significant difference (F=0.575,P=0.565). Conclusions It is feasible to reduce monitoring times when performing coronary CTA in dual?source CT scanner. The bolus?tracking monitor frequency in every 2 seconds can not only obtain satisfactory image quality, but also significantly reduce radiation dose.

The study found that the physician-patient trust crisis results from overreliance on technology trust instead of interpersonal trust and institutional trust. The alleged “Paternalistic government innovation”in healthcare service has caused wastes of healthcare resources and gap below public expectancy due to its incompetence in resolving social problems,further eroding institutional legality and intensifying such crisis.This research aimed to identify government accountabilities in building such trust from three aspects.

Objective:To understand the status of outpatients′medical care and their impact on the doctor -pa-tient trust in Beijing .Methods:Three tertiary hospitals were selected due to most concentrated high -quality medi-cal resources , the largest number of patient visits , universalism and particularism trust could be compared , taking field observations , personal interviews and questionnaires methods .Results:The main factors affecting clinical doctor-patient trust are time, the doctor skills, medical ethics, medical and prescription drug division , etc.are appropriate and effective .Conclusion:Play the role of pyramidmedical system′s overall effectiveness , and es-tablish a patient-centered system for outpatient care as soon as possible a comprehensive grasp of the overall con -struction team doctor , continue to strengthen the standardized management of medication .

Objective To investigate the clinical efficacy and experiences of laparoscopic hepatectomy (LH) for segment Ⅶ and Ⅷ liver tumors.Methods The retrospective cross-sectional study was conducted.The clinicopathological data of 94 patients who underwent LH for segment lⅦ or Ⅷ liver tumors in the Sir Run Run Shaw Hospital Affiliated to Zhejiang University School of Medicine from June 2010 to August 2016 were collected.The operating space for operation was built under laparoscopy.According to liver cirrhosis grading,tumor size,adjacent relationship with major blood vessels and residual liver volume,non-anatomical and anatomical hepatectomies were selected by patients.During the operation,tumors were precisely pinpointed and plane of liver resection was determined,and then proper instruments of liver partition and techniques of hepatic inflow occlusion were selected.Observation indicators:(1) surgical and postoperative recovery situations;(2) postoperative pathological examination;(3) follow-up and survival situation.Follow-up using outpatient examination and telephone interview was performed to detect the patients' survival up to July 2017.Measurement data with normal distribution were represented as (x)±s.Measurement data with skewed distribution were described as M (interquartile range).Survival rate was caculated by the Kaplan-Meier method.Results (1) Surgical and postoperative recovery situations:all 94 patients received successful operations,without perioperative death,including 73undergoing non-anatomical hepatectomy and 21 undergoing anatomical hepatectomy.Fourteen patients had conversion to open surgery and 27 received hepatic inflow occlusion.The median operation time,median volume of intraoperative blood loss and cases with intraoperative blood transfusion were respectively 187.5 minutes (75.0minutes),200 mL (200 mL) and 15.Eighteen patients had postoperative complications,including 6 with pleural effusion,6 with abdominal effusion,1 with wound infection,1 with abdominal infection,1 with venous thrombosis,1 with bleeding,1 with coagulation disorders and 1 with hepatic insufficiency.Clavien-Dindo classification of complications:11,1,5 and 1 patients were detected in grade Ⅰ,lⅡ,Ⅲ and Ⅳ,respectively.All complications were improved by symptomatic treatment.The median duration of hospital stay was 7 days (6 days).(2) Postoperative pathological examination:results of tumor pathological examination showed that 45,5,9 and 35 patients were respectively confirmed as hepatocellular carcinoma,cholangiocarcinoma,metastatic hepatic carcinoma and benign liver tumor.(3) Follow-up and survival situation:59 patients with malignant tumors were followed up for 6.0-52.0 months,with a median time of 42.6 months.Postoperative 1-and 3-year overall survival rates of 59 patients with malignant tumors were 98.3％ and 84.7％,respectively.Conclusions LH for segment Ⅶ and Ⅷ liver tumors which is conducted in experienced medical center is safe and feasible,with definite effects.Building operating space for operation under laparoscopy,determining precise positioning of the tumor and plane of liver resection,and selecting proper instruments of liver partition and techniques of hepatic inflow occlusion are the key points of successful operation.

A number of studies have shown that the enlarged perivascular spaces (EPVS) are associated with various diseases such as cerebral small vessel disease,Alzheimer's disease,post-stroke depression,and post-stroke cognitive impairment.This article reviews the imaging features,pathophysiological mechanisms and clinical significance of EPVS.

Acute respiratory distress syndrome (ARDS), characterized by acute hypoxic respiratory dysfunction or failure, is a manifestation of multiple organ failure (MOF) in the lung, which often caused by various non-cardiac reasons, included severe trauma, infection, shock; and the most common risk factor is sepsis which would cause uncontrolled host response to infecting factors. As a strong stressor during sepsis, the severe infectious state of the body triggers serious stress reaction. The hypothalamus-pituitary-adrenal cortical (HPA) axis and sympathetic-adrenal medulla axis were activated and participated the initiation and progression of the stress response through the production of adrenocorticotropic hormone (ACTH), glucocorticoid (GC), epinephrine and norepinephrine (NE). As the main hormones during sepsis, catecholamines (CA), including epinephrine and NE, could bind to adrenergic receptor (AR). After the binding, CA could play its role through the complicated signal way. Therefore, to explore the signal transduction pathway of α-AR, during sepsis, is important for revealing the mechanism of sepsis-induced ARDS.

Objective To explore the effects and mechanism of α2A-adrenergic receptor (α2A-AR) antagonist BRL-44408 maleate on lipopolysaccharide (LPS)-induced acute lung injury (ALI) in mice. Methods Sixty male C57BL/6 mice were randomly divided into three groups (n = 20): sham group, LPS group and BRL-44408 maleate pre-treated group (BRL+LPS group). The model of ALI was replicated by intratracheally administrated of LPS (5 mg/kg), and the mice in the sham group were received an equal volume of saline. Mice in the BRL+LPS group were treated with additionally BRL-44408 maleate (5 mg/kg, i.p) at 4 hours before LPS administration. The mice were sacrificed at 6 hours and 24 hours after LPS administration in each group. Among them, 5 mice were used to collect the bronchoalveolar lavage fluid (BALF) and the other 5 mice were sacrificed for lung tissues. The levels of norepinephrine (NE), tumor necrosis factor-α (TNF-α), interleukins (IL-6, IL-10) in BALF were measured by enzyme linked immunosorbent assay (ELISA). The level of protein in BALF was measured by bicinchoninic acid (BCA) method. The histopathological changes and wet/dry (W/D) ratio of lung tissue were observed. The expression of lung phosphorylated mitogen-activated protein kinase kinase (p-MEK) and phosphorylated extracellular regulated protein kinases (p-ERK) were detected by Western Blot. Results Compared with the sham group, the lung histopathological injury was significantly aggravated, and the histopathological injury score was significantly increased, the lung W/D ratio, and total protein content, NE, TNF-α, IL-6, IL-10 in BALF, and p-MEK and p-ERK expressions were significantly increased in LPS group at 6 hours after model setup [the lung histopathological injury score: 0.70±0.04 vs. 0.14±0.13,W/D ratio: 4.79±0.15 vs. 4.35±0.17, protein content (g/L): 1.51±0.36 vs. 0.46±0.13, NE (ng/L): 85.02±11.28 vs.47.18±10.30, TNF-α (ng/L): 186.61±21.93 vs. 9.18±2.86, IL-6 (ng/L): 193.45±26.54 vs. 13.58±2.54, IL-10 (ng/L): 113.46±31.23 vs. 25.66±9.41, p-MEK/β-actin: 0.246±0.019 vs. 0.178±0.030, p-ERK/β-actin:0.257±0.013 vs. 0.175±0.014, all 1 < 0.05], and increase with time after model setup. Compared with the LPS group,BRL-44408 maleate pretreatment for 6 hours could significantly improve the degree of lung injury and reduce the lung histopathological injury score (0.61±0.05 vs. 0.70±0.04), reduce lung W/D weight ratio (4.51±0.22 vs. 4.79±0.15);the expression of NE, TNF-α, IL-6 in BALF were inhibited [NE (ng/L): 55.77±15.86 vs. 85.02±11.28, TNF-α (ng/L): 54.79±12.68 vs. 186.61±21.93, IL-6 (ng/L): 67.66±20.08 vs. 193.45±26.54], in addition, the up-regulation of p-MEK, p-ERK were significantly inhibited (p-MEK/β-actin: 0.204±0.008 vs. 0.246±0.019, p-ERK/β-actin:0.186±0.024 vs. 0.257±0.013), with statistically significant differences (all 1 < 0.05). The protein content and the expression of IL-10 in BALF showed no significant difference. Conclusion α2A-AR blocker BRL-44408 maleate could alleviate endogenous ALI induced by LPS in mice by inhibiting the MEK/ERK pathway.

Acute?lung?injury?(ALI)?and?its?severe?form,?acute?respiratory?distress?syndrome?(ARDS),?are?common?critical?syndromes.?The?causes?of?the?syndrome?are?complex?and?diverse.?The?main?pathological?features?are?the?diffuse?inflammatory?and?protein-rich?pulmonary?edema?caused?by?destruction?of?the?blood-air?barrier.?Reactive?oxygen?species?(ROS)?mediate?oxidative?damage?by?oxidizing?bio-macromolecules,?including?lipids,?proteins?and?nucleic?acid.?Among?many?systems?producing?ROS,?nicotinamide-adenine?dinucleotide?phosphate?(NADPH)?oxidase-mediated?ROS?is?the?main?source,?and?its?functional?subunit?is?the?transmembrane?subunit?NOX?family.?The?distribution?of?NOX?family?proteins?in?lung?tissue?is?cell?type?dependent.?NOX-derived?ROS?is?involved?in?the?defense?function?of?lung?tissue?and?related?to?the?occurrence?and?development?of?ALI/ARDS.?This?review?mainly?describes?the?cell?distribution,?activation?factors,?and?its?relationship?with?the?occurrence?and?development?of?ALI?of?the?NOX?family.

Lacunar stroke is a common ischemic cerebral small vessel disease. It can cause vascular cognitive impairment. Many studies have shown that the number, location, and course of lacunar stroke are closely associated with vascular cognitive impairment. This article reviews the related studies of lacunar stroke and vascular cognitive impairment.