Ferroptosis is a non-apoptotic regulated cell death caused by iron accumulation and subsequent lipid peroxidation. Currently, the therapeutic role of ferroptosis on cancer is gaining increasing interest. Baicalin an active component in

Dendritic cells (DC) represent a heterogeneous cell population including many subsets. DC subpopulations with different characteristics and functions have been identified. The liver, as an immunological organ, is important in induction of immune tolerance. The unique anatomical architecture and immune properties of the liver have given DC the ability to maintain liver homeostasis and respond quickly to liver tissue damage. This article reviewed the role of hepatic DC subsets in the maintenance of tissue homeostasis and repair of damaged tissue in the liver.

In order to evaluate the safety performance of self-expandable NiTi alloy stents systematically, the dynamic safety factor drawn up by International Organization for Standardization, was used to quantitatively reflect the safety performance of stents. Based on the constitutive model of super-elastic memory alloy material in Abaqus and uniaxial tensile test data of NiTi alloy tube, finite element method and experiments on accelerated fatigue life were carried out to simulate the self-expansion process and the shape change process under the action of high and low blood pressure for three -type stents of 8×30 mm, 10×30 mm, 12×30 mm. By analyzing the changes of stress and strain of self-expanding NiTi alloy stent, the maximum stress and strain, stress concentration position, fatigue strength and possible failure modes were studied, thus the dynamic safety factor of stent was calculated. The results showed that the maximum stress and plastic strain of the stent increased with the increase of grip pressure, but the maximum stress and strain distribution area of the stent had no significant change, which were all concentrated in the inner arc between the support and the connector. The dynamic safety factors of the three stents were 1.31, 1.23 and 1.14, respectively, which indicates that the three stents have better safety and reliability, and can meet the fatigue life requirements of more than 10 years, and safety performance of the three stents decreases with the increase of stent's original diameter.
Alloys ; Finite Element Analysis ; Nickel ; Reproducibility of Results ; Self Expandable Metallic Stents ; Stress, Mechanical ; Titanium

Objective:To investigate the incidence rate, influencing factors and prognosis of infection-induced acute renal injury (AKI) in patients with acute-on-chronic liver failure (ACLF).Methods:516 cases with acute-on-chronic liver failure complicated with infection that were hospitalized in our hospital during 2014 to 2016 were retrospectively studied. General conditions and clinical characteristics of the patients were collected, and grouped according to the presence or absence of incidence and severity of AKI. General conditions, laboratory results, occurrence of complications and survival were compared and analyzed.Results:The main causes were HBV infection (67.8%) and alcoholic liver disease (20.0%). The most common sites of infection were abdominal cavity, lung and blood. Multivariate analysis showed that neutrophil count, TBIL, lactate and septic shock were independent risk factors for infection-induced AKI in ACLF patients. The cumulative mortality in patients with AKI after infection at 28, 90 and 360 days was significantly higher than those without AKI (51.6% and 20.5%, 70.2% and 40.3%, 73.4% and 45.9%; P < 0.01). In both groups, deaths had occurred mainly in the early (0 ~ 28 d) and middle (29 ~ 90 d) stage of follow-up period. In the late follow-up period (91-360 d), there was no statistically significant difference in mortality rate between the two groups. Conclusion:Infection is an important inducing cause of AKI in ACLF patients. The underlying liver disease and the severity of infection are significantly related to the infection-induced AKI in ACLF patients, and once AKI occurs after infection, the mortality rate of the patients is significantly increased.

To compare the clinical value of superb microvascular imaging (SMI) and contrast enhanced ultrasound (CEUS) in the differential diagnosis of thyroid nodules, and to further study whether the combination of SMI and/or CEUS with thyroid imaging reporting and data system (TI-RADS) can improve the diagnostic value of TI-RADS.
 Methods: SMI, CEUS, TI-RADS, TI-RADS combined with CEUS, TI-RADS combined with SMI, TI-RADS combined with SMI and CEUS were used to differentiate thyroid nodules. TI-RADS 4b, 5 categories in two-dimensional ultrasound, hypoenhancement in CEUS, and peripheral blood flow with penetrating vessels in SMI were considered malignant signs. The diagnostic efficacy of these methods was compared according to post-operative pathology or fine needle aspiration cytology.
 Results: A total of 237 patients with 296 thyroid nodules were included in the study. The sensitivity, specificity and accuracy for TI-RADS were 78.4%, 77.7% and 78.0% respectively, 75.5%, 86.6% and 81.4% in SMI, 82.0%, 88.5% and 85.5% in CEUS, 92.1%, 90.4% and 91.2% in TI-RADS combined with SMI and CEUS. Area under the receiver operating characteristic curve (AUROC) showed no significant difference between SMI, CEUS, TI-RADS (χ2=4.29, P=0.117). AUROC of both TI-RADS combined with CEUS (χ2=39.62, P<0.001), TI-RADS combined with SMI (χ2=36.61, P<0.001) were higher than TI-RADS. AUROC of TI-RADS combined with SMI and CEUS was higher than TI-RADS combined with SMI (χ2=4.50, P=0.033) or TI-RADS combined with CEUS (χ2=4.24, P=0.039).
 Conclusion: Peripheral blood flow with penetrating vessels in SMI possesses high diagnostic value in differentiating thyroid cancer. The combination of SMI and/or CEUS with TI-RADS can be used to improve the diagnostic efficacy of TI-RADS in differential diagnosis of thyroid nodules.
Diagnosis, Differential ; Humans ; Thyroid Neoplasms ; Thyroid Nodule ; Ultrasonography

Objective To analyze the relationship between fatigue strength and connector length of intracranial artery stents, so as to investigate the exact location of fatigue fracture for the stent. Methods The fatigue life for 3 kinds of artery stents were analyzed by finite element analysis method of fatigue fracture, and distribution map of dangerous points was drawn by means of Goodman curve. Based on F2477-07 standard from American Society for Testing and Materials (ASTM), the fatigue life for 3 kinds of stents was tested. Results If the length of the support connector was longer, the maximum equivalent stress and the average stress in dangerous points of the stent would be larger. If the distribution of dangerous points was more close to the curve of fatigue limit, and fatigue fracture was more likely to occur in the stent. Goodman curves indicated that 3 kinds of stents was safe to be used in the body for ten years. Finite element analysis and experimental result showed that fatigue life near the stent junction was relatively lower, and dangerous points of the stent was located at the arc junction. Conclusions It is reasonable to study stents by finite element analysis, whose results are basically coincided with the experimental data. Fatigue life can be extended by reducing connector’s length for the design of stent structure.

Objective To verify and compare the TI-RADS developed by Kwak et al .( Kwak TI-RADS ) ,2015 American Thyroid Association Management Guidelines for Adult Patients with Thyroid Nodules and Differentiated Thyroid Cancer ( ATA Guideline Classification) ,2017 TI-RADS released by the American College of Radiology (ACR TI-RADS) and TI-RADS developed by Zhou et al .(Zhou TI-RADS) in the evaluation of thyroid nodules . Methods The ultrasound images of 339 thyroid nodules in 273 patients were analyzed by retrospective study . The thyroid nodules were categorized into aforementioned four stratified systems . Based on the pathological findings considered the "gold standard",the receiver operating characteristic( ROC ) curve was created to compare the clinical application value of aforementioned four stratified systems . Results The percentage of nodules that could not be categorized were 1 .2％ ,17 .5％ ,0 and 1 .2％ for the Kwak TI-RADS ,ATA guidelines ,ACR TI-RADS ,and Zhou TI-RADS ,respectively and the area under the ROC curve ( AUC) was 0 .899 ,0 .879 ,0 .876 ,and 0 .918 ,respectively . The sensitivity of Kwak TI-RADS ,ATA guidelines classification ,and ACR TI-RADS were higher than that of Zhou TI-RADS (all P < 0 .05) ,whereas the specificity of Zhou TI-RADS was the highest (all P < 0 .05) . As for the accuracy ,no statistically significant differences were observed between any two of Kwak TI-RADS ,ATA guidelines ,ACR TI-RADS ,and Zhou TI-RADS systems ( all P > 0 .05) . Conclusions Four thyroid risk stratification systems provide effective risk assessment for thyroid nodules ,Zhou TI-RADS has relatively lower sensitivity ,but its specificity and AUC value are the highest among the four evaluated systems . In addition ,ACR TI-RADS can classify the most nodules ,while the number of nodules that can′t be categorized by ATA guideline is maximum .

Objective To evaluate the effects of health education of house-to-house visit in malaria prevention and control in the border and minority areas. Methods A health education of house-to-house visit in malaria prevention and control was car-ried out,and baseline and follow up surveys were conducted by qualitative and quantitative methods to document the changes of local villagers’knowledge,attitudes and behaviors(KAP)of malaria prevention and control in 2 counties of Yunnan Province, and the results before and after the interventions were analyzed and compared. Results After the intervention,the cognition rates about malaria symptoms and signs,transmission mode,preventive measures and health-seeking behaviors were 99.3%, 98.9%,79.9%and 99.3%respectively in the local residents,and those were 39.2%,8.2%,47.0%and 49.9%respectively be-fore the intervention,and all the differences were statistically significant(P all<0.01). Conclusions KAP related to malaria among the targeting population has improved after the interventions and the house-to-house visit is an effective community-based health education approach.

OBJECTIVE: To analyze the characteristics of left ventricular rotation and twist in patients with essential hypertension (EH) of different left ventricular configurations by 3-dimensional speckle tracking echocardiography (3D-STE). METHODS: A total of 106 EH patients were divided into 4 groups: a left ventricular normal configuration (LVN) group (n=30), a concentric remodeling (CCR) group (n=31), a concentric hypertrophy (CCH) group (n=29), an eccentric hypertrophy (ECH) group (n=16), and a control group of 30 healthy subjects. The parameters of LVEF, peak basal rotation (Prot-B), peak apical rotation (Prot-A), left ventricular peak apical rotation (LV-rot), and left ventricular peak apical twist (LV-tw) were compared. RESULTS: The left ventricular mass index in the EH groups, which kept increasing, was higher than that in the normal control group (P<0.05). Compared with the normal control group, LVN and ECH group, the left ventricular posterior wall thickness, interventricular septum at end-diastole, and relative wall thickness significantly increased in the CCH and CCR group (P<0.05). LVEF showed no significant difference among the normal control, LVN, CCR and CCH group (P>0.05), but LVEF was lower in the ECH group than in other groups (P<0.05). Compared with the normal control group, Prot-B, Prot-A, LVrot and LVtw were significantly higher in the LVN, CCR and CCH group (P<0.05), but decreased in the ECH group (P<0.05). CONCLUSION 3D-STE can evaluate the left ventricular rotation and twist in EH patients with different configurations, and reflect changes in the left ventricular systolic function in EH of different configurations.
Adult ; Case-Control Studies ; Echocardiography, Three-Dimensional ; methods ; Female ; Heart Ventricles ; diagnostic imaging ; Humans ; Hypertension ; diagnostic imaging ; physiopathology ; Male ; Middle Aged ; Ventricular Dysfunction, Left ; diagnostic imaging ; physiopathology ; Ventricular Remodeling ; physiology