Objective: To develop Attributional Style Questionnaire for Adolescents (ASQA) and explore the correlation between attributional style and mental health in adolescents. Method: ASQA was drawn up through referring to Peterson's method. 534 students were measured by ASQA, SSDA, SAS and MMOCI. Results: The goodness of fit indices of three-factor model in ASQA as follows: x2/df = 511.69/188, GFI = 0.91, AGFI = 0.89, NNFI = 0.91, CFI = 0.92, IFI = 0.92. Cronbach's α coefficient was 0.82. Spearman - Brown split - half reliability was 0.84. Stable and global variables entered the equations of depression, anxiety, obaession and compulsion in multiple linear regression analysis. Conclusion:ASQA had good reliability and construct validity. Adolescents were in low level of mental health when they attributed negative events to stable and global causes.

Objective:To examine whether dysfunctional attitudes and cognitive bias change with fluctuations in depressive symptoms. Methods:122 patients with MDD (major depressive disorder) were assessed with DAS (dysfunctional attitude scale),CBQ (cognitive bias questionnaire) ,and HRSD (Hamilton rating scale for depression) before and after the 8-week treatment. 51 normal subjects were assessed with the DAS, CBQ and SDS as controls.Results:(1) Compared with normal controls, at the baseline MDD patients had significantly higher total DAS scores (158.2?34.6 vs. 119.3?23.4,t=8.559, P=0.000) and the score of CBQ (5.19?3.77 vs. 1.69?1.83, t=8.208, P=0.000). (2) After 8 weeks, the HRSD scores of patients reduced to Median 7.0, and the DAS and CBQ scores significantly lower than those in baseline (DAS total score from 158.2?34.6 to 143.3?29.3, t=3.611, P=0.000; the median of CBQ decreased from 5.0 to 3.0;z=4.670, P=0.000). (3) The DAS score (131.1?25.7) and CBQ score (median 3.0) of full recovery patients with full recovery remained higher than those of controls (t=2.397, P=0.018 ;z=3.990, P=0.000).Conclusion:Dysfunctional attitudes and cognitive bias were influenced by fluctuations in stata or demonstrateing stability over time. They were all state-trait features.

Objective To reproduce an experimental model of blast injury to dog brain simulating the mechanism of primary effect of the blast wave of explosive weapons.Methods A spherical explosive with explosive energy of 1gTNT was used to detonate at different distances(9mm,13mm)from the right temple to produce blast injury to the dog brain.The changes in physiological index before or after detonating and the surviving time after injury were recorded.The changes in the behavior of the wounded animals and characteristics of pathological changes in the brain were observed.Results Respiratory arrest,hypotension,and decreased heart rate were observed after wounding.All animals survived longer than 6 hours after the explosion injury.Obvious subdural hematoma and sub-arachnoid hemorrhage occurred frequently.Traumatic conditions of the brain were different in the two groups.Conclusions The animal model reproduced in this experiment simulates that produced by blast wave of explosive weapons.It is reproducible,easy to handle,and can be used in experimental study of blast injury to the brain.

Genetic bistable systems are a large class of important biological systems. Bistability, the capacity to achieve two distinct stable steady states in response to a set of external stimuli, arises within biological systems ranging from the ? phage switch in bacteria to cellular signal transduction pathways in mammalian cells. On the other hand, the increasing experimental evidence in the form of bimodal population distribution has indicated that noise plays a very key role in the switching of bistable systems. However, the physiological mechanism underling noise-induced switching behaviors has not been well explored yet. In the previous work, it has been showed that noise can induce coherent switch for a single genetic Toggle switch system. Here the influence of several kinds of noises (including intracellular and extracellular noises) on synchronized switch was investigated for a multicell gene toggle switch network system. It has been found that multiplicative noises resulting from fluctuations of either synthesis or degradation rates and the additive noise within each cell (they altogether are called as intracellular noises) all can induce the synchronized switch, and that there exists an optimal noise intensity such that the synchronized switch is optimally achieved and the amplification factor has the maximal value. On the other hand, the extracellular noises arising from the stochastic fluctuation of the cellular environment, not only brings about the synchronized switch, but also enhances it by suppressing intracellular fluctuations when the intracellular noises are not enough to induce the synchronized switch. Finally, the influence of the diffusive rate of signal molecules affected by noise on the dynamics of the multicellular system was also investigated, showing that the larger the diffusive rate, the better the synchronized switch and the larger the amplification factor.

ObjectiveTo explore the change of renal cortical perfusion in rabbits by microbubbles-enhanced ultrasound cavitation.MethodsTotally 20 New Zealand rabbits were randomly divided into four groups, 5 rabbits in each group. SonoVue was injected via the ear vein at a dose of 0.1 ml/kg. The renal perfusion imaging 30 s modeling was made. Under the mode of contrast enhancement, the rabbit kidneys irradiated with different mechanical indexs (MI) were 0.6 (MI 0.6 group) , 0.75 (MI 0.75 group) , 1.1 (MI 1.1 group) and 1.3 (MI 1.3 group) for 60 s, 15 min respectively. After the irradiation and conventional ultrasound contrast was made again, the renal perfusion imaging was mad. The time-intensity curves (TIC) were analyzed obtained from the following parameters: the slope rate of ascending curve (A) , the slope rate of descending curve (α) , area under the curve (AUC) , time to peak (TTP) , and derived peak intensity (DPI) . One-way ANOVA and LSD-t were used to analyze all experimental data.ResultsCompared with the MI 0.6 group, the MI 1.1 group and the MI1.3 group, the A, α were less than MI 0.6 group, the AUC, DPI, TTP were greater than MI 0.6 group, and the differences were statistically signiifcant (MI 1.1 groupvs MI 0.6 group:t=3.13, 5.31, 4.25, 4.53, 5.72, allP<0.05; MI 1.3 groupvs MI 0.6 group:t=3.67, 6.23, 4.47, 5.48, 6.86, allP<0.05). Compared with the MI 0.75 group, the MI 1.1 group and the MI 1.3 group, the α were less than MI 0.75 group, the AUC, DPI, TTP were greater than MI 0.75 group, and the differences were statistically signiifcant (MI 1.1 groupvs MI 0.75 group:t=6.02, 4.36, 4.85, 5.83, allP<0.05; MI 1.3 groupvs MI 0.75 group:t=6.19, 4.51, 5.73, 6.97, allP<0.05); the MI 1.1 group and the MI 1.3 group, the A were less than MI 0.75 group, and the difference were not statistically signiifcant. The MI 1.1 group and the MI 1.3 group, the MI 0.6 and the MI 0.75 group, and the difference were not statistically signiifcant.ConclusionsTo the change of hemodynamic of the rabbits renal cortical perfusion in the microbubbles-enhanced ultrasound cavitation contrast agent can be observed. Along with the mechanical index increased renal cortical perfusion flow stasis and the perfusion on of slowed in rabbit, may cause renal damage, the TIC curve displayed further changes.

Objective: To determine the changes of serum Tau protein, glial fibrillary acidic protein (GFAP), tumor necrosis factor alpha (TNF-α), and malonaldehyde (MDA) in rats after blast-related traumatic brain injury (BTBI) and to provide relative information for further studies on BTBI mechanism and seek specific biomarkers for BTBI.
Methods: Ninety male Sprague-Dawley rats were randomly assigned into three groups: control group, moderate blast injury group, and severe blast injury group (n=30 for each). Rats in the moderate and severe blast injury groups were respectively exposed to corresponding levels of BTBI. After explosion, serum levels of Tau, GFAP, TNF-α, and MDA in each group were determined by Elisa assay at different time points after injury (8 h, 24 h, 3 d, and 6 d). The extent of brain damage was detected by Nissl staining and TUNEL assay.
Results: Serum levels of Tau and GFAP rapidly increased and reached the peak at 24 h after either moderate or severe blast injury. All the values were significantly higher than control group at all time points (P<0.05). Serum TNF-α level of both injury groups peaked at 8 h after BTBI and stayed significantly higher than control group at all time points (P<0.05). Serum MDA of two injury groups began to significantly increase at 3 d and the level stayed significantly higher than control group until 6 d (P<0.05). Moreover, unlike the other biomarkers, serum MDA of severe blast injury group was significantly higher than moderate blast injury group at 6 d (P<0.05).
Conclusion: The changes of serum Tau, GFAP, and TNF-αshowed a good sensitivity at the acute phase after BTBI (within 24 h). However, their specificity and correlation with the extent of injury were limited in this experiment. Moreover, although the change of serum MDA showed a poor sensitivity and specificity to the diagnosis of BTBI during the first few days, it can reflect the injury degree at 6 d after injury. Therefore, further studies are needed to improve the methods of detecting more serum markers and investigate the significance of multiple markers in diagnosing BTBI.

OBJECTIVETo develop an HPLC method for quantitative determination of three quassinoids in Brucea javanic.

METHODThe determination was carried out on a phenomenex C18 column (4.6 mm x 250 mm, 5 microm) with gradient elution program of methol-water at a flow rate of 1.0 mL x min(-1), and the detection wavelength was 270 nm.

RESULTLinearites of bruceine D, brusatol and bruceine H were good (r = 0.9996, 0.9996, and 0.9998) in ranges of 2.52-12.60, 2.19-10.95, and 2.91-14.55 microg, respectively. The average recoveries of bruceine D, brusatol and bruceine H were 100.01%, 100.95% and 100.43% respectively, and RSD of the above three compounds were 0.31% (n = 6), 1.7% ( n = 6) and 1.7% (n = 6), respectively.

CONCLUSIONThe determination results of three batch samples showed that the method was simple, accurate and could be used in the quantitative determination of three components in the B. javanica.

Brucea ; chemistry ; Chromatography, High Pressure Liquid ; methods ; Drugs, Chinese Herbal ; analysis ; isolation & purification ; standards ; Linear Models ; Organic Chemicals ; analysis ; isolation & purification ; standards ; Quality Control

OBJECTIVE: To investigate the effect of exosomal FZD10 derived from non-small cell lung cancer (NSCLC) cells on angiogenesis of human umbilical venous endothelial cells (HUVECs) and explore the possible mechanism. METHODS: We analyzed the expression of FZD10 in two NSCLC cell lines (95D and H1299 cells), normal human bronchial epithelial cells (BEAS-2B cells) and their exosomes isolated by ultracentrifugation. Cultured HUVECs were treated with the exosomes derived from NSCLC cells or NSCLC cells transfected with FZD10-siRNA, and the changes in tube formation ability of the cells were analyzed using an in vitro angiogenesis assay. ELISA was performed to determine the concentration of VEGFA and Ang-1 in the conditioned media of HUVECs, and RT-qPCR was used to analyze the mRNA levels of VEGFA and Ang-1 in the HUVECs. The effects of exosomal FZD10 on the activation of PI3K, Erk1/2 and YAP/TAZ signaling pathways were evaluated using Western blotting. RESULTS: Compared with BEAS-2B cells and their exosomes, 95D and H1299 cells and their exosomes all expressed high levels of FZD10 (P < 0.01). The exosomes derived from 95D and H1299 cells significantly enhanced tube formation ability and increased the expressions of VEGFA and Ang-1 protein and mRNA in HUVECs (P < 0.01), but FZD10 knockdown in 95D and H1299 cells obviously inhibited these effects of the exosomes. Exosomal FZD10 knockdown suppressed the activation of PI3K and Erk1/2 signaling pathways, but had no obvious effect on the activation of YAP/TAZ signaling pathway. CONCLUSION Exosomal FZD10 derived from NSCLC cells promotes HUVEC angiogenesis in vitro, the mechanism of which may involve the activation of PI3K and Erk1/2 signaling pathways.
Carcinoma, Non-Small-Cell Lung/metabolism* ; Cell Proliferation ; Culture Media, Conditioned ; Exosomes ; Frizzled Receptors/metabolism* ; Human Umbilical Vein Endothelial Cells/metabolism* ; Humans ; Lung Neoplasms/metabolism* ; MicroRNAs/genetics* ; Neovascularization, Pathologic/metabolism* ; Phosphatidylinositol 3-Kinases/metabolism* ; RNA, Messenger/metabolism* ; RNA, Small Interfering/metabolism*

Objective: To investigate the effect of three-dimensional conformal radiotherapy (3D-CRT) combined with PC chemotherapy (paclitaxel + carboplatin) on non-small cell lung cancer (NSCLC) patients and the serum levels of CA125, tissue inhibitor of metalloproteinase-1 (TIMP-1), serum amyloid A (SAA) and T-lymphocyte subsets. Methods: A total of 100 patients with NSCLC treated in Affiliated Hospital of Guangdong Medical University from May 2015 to December 2017 were selected as the study subjects. They were divided into control group and observation group according to random number table method, with 50 cases in each group. The observation group was treated with 3D-CRT combined with PC chemotherapy, while the control group was treated with PC chemotherapy. The two groups were treated for 4 cycles. The therapeutic effect, serum CA125, TIMP-1, SAA, T-lymphocyte subsets and adverse reactions were compared between the two groups. Results: Four cases were lost to follow-up both in the two groups. The overall response rate in the observation group (43.48%, 20/46) was higher than that in the control group (23.91%, 11/46; χ²=3.941, P=0.047). The serum levels of CA125, TIMP-1 and SAA of the two groups had no significant difference before treatment, and the levels of these indexes decreased after treatment. The serum levels of CA125, TIMP-1 and SAA in the observation group after treatment were (12.31±1.13) U/ml, (275.31±13.69) pg/ml and (47.21±7.21) mg/L, which were lower than those in the control group [(30.36±1.98) U/ml, (320.36±17.23) pg/ml, (65.92±8.36) mg/L], with significant differences (t=53.699, P<0.001; t=13.884, P<0.001; t=11.495, P<0.001). The levels of CD3⁺ , CD4⁺ , CD8⁺ and CD4⁺ /CD8⁺ of the two groups had no significant difference before treatment, and the levels of these indexes decreased after treatment. The levels of CD3⁺ , CD4⁺ , CD8⁺ and CD4⁺ /CD8⁺ in the observation group were (35.27±10.31)%, (20.27±6.72)%, (15.89±3.37)% and 0.91±0.37, which were higher than those in the control group [(30.77±9.27)%, (15.27±5.73)%, (12.02±2.69)% and 0.75±0.39], with significant differences (t=2.201, P=0.030; t=3.840, P<0.001; t=6.087, P<0.001; t=2.019, P=0.047). There were no significant differences in the adverse reactions such as nausea and vomiting [63.04% (29/46) vs. 43.48% (20/46); χ²=3.537, P=0.060], phlebitis [6.52% (3/46) vs. 4.35% (2/46); χ²=0.000, P>0.999], abnormal liver function [6.52% (3/46) vs. 2.17% (1/46); χ²=0.261, P=0.609] and myelosuppression [8.70% (4/46) vs. 6.52% (3/46); χ²=0.000, P>0.999] between the observation group and the control group. Conclusion For patients with NSCLC, 3D-CRT combined with PC chemotherapy can improve the overall response rate, decrease the levels of serum CA125, TIMP-1 and SAA, and improve the immune function of patients. The therapeutic effect is remarkable and the safety is good. The therapeutic scheme is suitable for the treatment of NSCLC.

A remote interactive consultation system based on wireless sensor networks is proposed for family health care works and non-hospital special case patient monitoring. The sensor nodes are integrated into a local area network to collect a variety of human physiological information, which is uploaded to Internet through the Code-Division Multiple Access (CDMA) wireless network technology and sent to the database based on GIS spatial location query technology for achieving electronic diagnosis. Users or administrators can visit remote monitor region through Internet. The results show that the system, using a star passive topology of static gateway and mobile detection node, combines intelligent-distributed wireless sensing, computing and wireless communication technologies. Hence the proposed system has a great practical value.
Biosensing Techniques ; methods ; Computer Communication Networks ; Diagnosis, Computer-Assisted ; instrumentation ; Equipment Design ; Humans ; Monitoring, Ambulatory ; instrumentation ; methods ; Monitoring, Physiologic ; methods ; Signal Processing, Computer-Assisted ; instrumentation ; Telemedicine