Environmental arsenic exposure is a worldwide public health problem. Long-term exposure to inorganic arsenic is closely related to diseases such as cardiovascular disease, diabetes and malignant tumors. Different dietary structure and intake of certain specific nutrients may have important effects on the pathogenic effect of arsenic. This article summarizes the effects of dietary nutrients on arsenic toxicity, providing reference for the follow-up arsenic toxicity research and reducing the risk of arsenic-related diseases through nutritional intervention.

[Abstrct] Objective To compare the short -term tumor response and adverse events of two chemoradio-therapy regimens for locally advanced non -squamous non-small cell lung cancer .Methods From March 2009 to January 2013 ,we recruited 42 patients with stage ⅢNSCLC who had received three -dimensional intensity -modulated radiotherapy combined with chemotherapy .group A treated with radiotherapy combined pemetrexed plus cisplatin and group B treated with radiotherapy combined docetaxel plus cisplatin .We compared the short -term tumor response and adverse events between the two regimens .Results There were 28 cases in group A and 14 cases in group B .There were no significant differences between the two groups in hematologic toxicities ,such as leukopenia,neutropenia,anemia and thrombocytopenia.In non-hematologic toxicities,radiation pneumonitis and cough were no significances respectively (P<0.05).There were no significant differences in other non -he-matologic toxicities,such as liver dysfunction,renal dysfunction,fever,dyspnea,radiation esophagitis,hypody-namia,weight loss,gastrointestinal reactions and skin reactions .The response rate displayed no differences be-tween two groups .Conclusion This study reveals Pemetrexed plus cisplatin group had less non -hematologic toxicities than Docetaxel plus cisplatin group in locally advanced non -squamous non -small cell lung cancer . But there are no differences in the short -term tumor response between the two regimens .

Objective To evaluate the value of multi-slice spiral CT Low-dose scanning technology in thyroid enhanced scan. Methods Eighty patients were randomly divided into four groups including Group A:120 kV,180 mA;Group B:120 kV,100 mA;Group C:100 kV,180 mA and Group D:100 kV,100 mA.The subjective image quality was evaluated and scored.Thyroid CT val-ue,image background noise (N),image signal to noise ratio (SNR),CT dose index (CTDIvol),dose length product (DLP),and the effective radiation dose (ED)were measured and compared.Results The subjective image scores and SNR of these four groups were 3.90±0.31 and 26.34±3.13,3.75±0.44 and 25.08 ±1.87,3.70 ±0.47 and 25.86 ±2.38,3.60 ±0.60 and 24.87 ±2.20 respectively.There were no significantly statistical differences among the subjective image scores and SNR (P > 0.05 )of the 4 Groups.Thyroid CT values,N,CTDIvol,DLP and ED were (1 68.55 ± 13.39)HU,(6.48 ±0.84)HU,(10.95 ±0.00)mGy, (145.67±8.79)mGy·cm,(0.73±0.04)mSv in Group A,(170.70±11.34)HU,(6.83±0.45)HU,(6.08±0.00)mGy,(84.58± 4 .9 4)mGy· cm,(0 .4 2 ±0 .0 3 )mSv in Group B,(1 8 5 .2 0 ±2 2 .3 5 )HU,(7 .1 9 ±0 .8 6 )HU,(6 .5 9 ±0 .0 0 )mGy,(8 9 .8 6 ± 3 .2 6 )mGy· cm,(0 .4 5 ±0 .0 3 )mSv in Group C,(1 9 0 .5 5 ±2 1 .3 8 )HU,(7 .6 6 ± 1 .0 1 )HU,(3 .6 6 ±0 .0 0 )mGy,(5 0 .2 0 ± 1 .8 9 )mGy·cm,(0.25±0.01)mSv in Group D respectively.There were significantly statistical differences among different thyroid CT values,N,CTDIvol,DLP and ED (P <0.05).Conclusion Multi-slice spiral CT low-dose scanning technology in thyroid en-hanced scan can guarantee the image quality and effectively reduce thyroid radiation dose.

Objective To observe the effect of different stimulative ways of scalp penetration acupuncture on acute stroke. Methods 90 inpatients with acute stroke from July, 2011 to July, 2014 were randomly divided into manual acupuncture group (n=30), electroacupuncture group (n=30) and simple acupuncture group (n=30). All the groups accepted scalp penetration acupuncture from Baihui (GV20) to Taiyang (EX-HN5) and stimulated manually, electrically and simply maintained, respectively. They were assessed with Neurological Deficit Score (NDS), measured with neuron-specific enolase (NSE) before and 14 days after treatment. The incidence of improvement was observed. Re-sults The NDS was the least in the manual acupuncture group (P<0.05), as well as the serumal level of NSE (P<0.05). The incidence of im-provement was the most in the manual acupuncture group (P<0.05). Conclusion The manual stimulation of scalp penetration acupuncture is more effective on the acute stroke.

Objective:Through histological analysis, immunofluorescence staining, electrophysiological detection and Sensory and motor function evaluation to investigate the effects of 3D printed hydrogel scaffold combined with bone marrow mesenchymal stem cells (BMSCs) in promoting functional recovery of spinal cord injury.Methods:10% GelMA hydrogel and 10 6 U stem cell suspension were prepared into bioink of appropriate concentration to construct the biomimetic spinal cord scaffold through 3D printing platform. The scaffold was placed in the medium and cultured in an environment of 37 ℃ CO 2 incubator. The microstructure of the scaffolds and the distribution of BMSC in the scaffolds was observed by scanning electron microscope. CAM/PI staining and confocal microscopy were used to observe the survival of stem cells in the scaffolds and determine the biocompatibility of the scaffolds. The scaffolds were implanted into the subcutaneous tissues of the back of rats, and the subcutaneous tissues were determined by HE staining to detect the immunogenicity of the scaffolds. After the rat model of hemicytoma defect was made, stents were transplanted for treatment, and confocal microscopy was used to evaluate the regeneration of neurons and axons in local area of spinal cord injury. At the same time, BBB score was used to evaluate motor function, mechanical pain score was used to evaluate sensory function, and surface electrode detection method was used to evaluate electrophysiological recovery weekly. Results:The long spindle shaped BSMC were uniformly distributed in the scaffold with a loose reticular structure. The scaffolds had good biocompatibility, and the cell survival rate of the prepared scaffolds reached 96% after 24 hours of printing. After 28 days of subcutaneous transplantation, the immune rejection was mild and immunogenicity was low. It was shown that the regenerated spinal cord tissue in the treatment group was significantly increased compared with the control group, which was widely distributed with cells after 28 days by HE staining. It was confirmed that part of the regenerated spinal cord tissue was neurons by immunohistochemical staining.Compared with the injured group, the regeneration of neurons and axons in the treatment group were significantly increased by immunofluorescence staining and confocal microscopy. In the treatment group, the BBB score recovered to 10 points, while the control group only recovered to about 1 point in the first week, which was statistically significant. And it recovered to 17 in the fourth week, while the control group only recovered to about 4 point in the four week, which was statistically significant. The Angle of inclined plate support of the treatment group was restored to 40 degrees, while it was only restored to 22 degrees in the control group. The pain threshold of the treatment group decreased to 18.5 points, which was not statistically different from that of the control group. The latent recovery effect of electrophysiology in the treatment group was the same as that in the sham operation group and better than that in the control group.Conclusion:3D printing hydrogel scaffold with loose network structure is suitable for cell proliferation. It has well biological survival, low cytotoxicity and low immunogenicity, which promoted neurons and axons to recovery and extend so as to effectively promote the recovery of motor function, sensory function and neural signal transmission rate after spinal cord injury.

Background and purpose: Sorafenib hepatocellular carcinoma assessment randomized protocol (SHARP) and sorafenib in patients in Asia-Pacific region with hepatocellular carcinoma (ORIENTAL) had indicated that multi-kinase inhibitor sorafenib could prolong overall survival (OS) and time to progression (TTP) as well as improve progress free survival (PFS) in patients with advanced stage hepatocellular carcinoma. Drug-related adverse events in the course of treatment restricted its clinical application to a certain degree. This study was aimed to summerize the adverse events as well as the management of sorafenib in our clinic. Methods: Twenty-five cases clinically diagnosed as advanced hepatocellular carcinoma were enrolled from January 2008 to October 2009. All the patients who received sorafenib treatment met inclusion criteria as followed: (1) Progression of disease after trans-hepatic arterial chemoembolization therapy; (2) Extensive portal vein cancerous thrombus formation; (3) Portal zone or retroperitoneal lymph node metastasis or multiple remote metastasis, such as lung or bone; (4) Diffused poor blood supply to tumor; (5) Inform consent was obtained. All adverse events with different grade were observed during the beginning 12 weeks, and clinical treatment were carried out relatively. Results: Total of 25 cases were enrolled. Nine patients died of the disease, 3 of them died during the first 12 weeks, 3 patients abandoned sorafenib treatment, among them 2 died before the finish of 12 weeks treatment and 1 patient discontinued 5 months after the sorafenib treatment. Twenty cases finally assigned. Number of patients encountered drug-related adverse events were: HFSR (hand-foot-skin-reaction) 4(4/20), diarrhea 4(4/20), alopecia 5(5/20), rasb 4(4/20), fatigue 8(8/20), leukopenia and Thrombocytopenia 4(4/20), elevated blood pressure 1(1/20) and abdominal pain 1(1/20). After clinical management, 20 patients' sorafenib treatment were eventually not affected by adverse events. Conclusion: Sorafenib was well-tolerated and is a safe option of treatment for patients with advanced hepatocellular carcinoma.

Purpose To explore the feasibility of low radiation dose combined with lowdose contrast agent in thyroid CT enhanced scan and investigate the benefit of reducing radiation hazard and contrast agent damage to thyroid.Materials and Methods 120 patients assigned for thyroid enhanced CT scan were prospectively and randomly divided into four groups (each group was 30 patients).Group A:radiation dose 120 kV,180 mA,contrast agent dose 1.2 ml/kg;group B:radiation dose 120 kV,180 mA,contrast agent dose 1.0 ml/kg;group C:radiation dose 100 kV,100 mA,contrast agent dose 1.2 ml/kg;group D:radiation dose 100 kV,100 mA,contrast agent dose 1.0 ml/kg.CT values,background sign,background noise of thyroid were measured;signal to noise ratio (SNR) and contrast to noise ratio (CNR) were calculated;CT dose index of volume (CTDIvol),dose length product (DLP),and the effective dose (ED) were recorded and calculated.The image quality was evaluated and the data was statistically analyzed by two radiologists.Results CT values,background sign and background noise of thyroid,as well as CTDIvol,DLP,ED among four groups were statistical significant (P＜0.05);there was no significant difference in SNR,CNR and image quality scores among four groups (P＞0.05).Conclusion It is beneficial of reducing radiation hazard and side-effect of contrast agent from low radiation dose combined with low-dose contrast agent under the condition of ensuring diagnostic image quality.

AIM: To observe the effect of Tripterygium glycosides on NOXs-ROS-NLRP3 inflammatory signa-ling pathways in the colon tissue in dextran sulphate sodium (DSS)-induced ulcerative colitis (UC) mice, and to investi-gate the underlying mechanisms.METHODS: BALB/c mice were used and the mouse model of UC was established by DSS induction.The mice were randomly divided into 5 groups (model group, low-, medium-and high-dose Tripterygium glycosides groups, and normal group).The colon tissues were collected 21 d after Tripterygium glycosides gavage.The mRNA expression of NLRP3, ASC and caspase-1 in the colon tissues was detected by real-time PCR.The caspase-1 ex-pression in the colorectal mucosa was observed by immunohistochemical method.ELISA was used to detect the protein le-
vels of IL-1α, TNF-αand IL-13.The production of reactive oxygen species (ROS) was measured by chemiluminescence technique, and the consumption rate of NADPH, which was inhibited by DPI, was analyzed to determine the activity of NADPH oxidases (NOXs).The neutrophils were isolated, and the ROS production, NOXs activity, and the mRNA ex-pression of NLRP3, ASC and caspase-1 were also detected.RESULTS: The colon tissues were abnormal with different de-grees in Tripterygium glycosides groups, and histopathological scores were lower than that in model group.In Tripterygium glycosides groups, in addition to the mRNA expression levels of caspase-1 in the colon tissues between normal group and high-dose group, ROS production, NOXs activity and the mRNA expression levels of NLRP3, ASC and caspase-1 in the colon tissues and colon-isolated neutrophils were lower than those in model group (P <0.05), and higher than those in normal group (P <0.05).The results of pairwise comparison for the efficacy of Tripterygium glycosides administration showed that the above indexes were statistically significant except the mRNA expression levels of caspase-1 between middle-dose group and high-dose group.Tripterygium glycosides administration significantly decreased the expression levels of proinflammatory cytokines IL-1αand TNF-αin the homogenates of colon tissues in the model mice (P <0.05).No differ-ence of IL-13 expression among the groups was observed.CONCLUSION: Tripterygium glycosides inhibits NOXs-ROS-NLRP3 inflammatory signaling pathways to reduce the expression of IL-1α, TNF-αand other proinflammatory cytokines, and attenuates DSS-induced ulcerative colitis in mice, by which the neutrophils might be involved in the process.

Objective To compare the consistency and correlation of multiple breath-hold (BH) with respiratory-triggered (RT) 1H-MRS for quantification of hepatic lipid content. Methods Sixty subjects were underwent RT 1H-MRS of the liver (Couinaud segment VII) and BH 1H-MRS at 1.5 Tesla Magnetic Resonace Imaging (MRI). The peak areas of water and methylene obtained on RT and BH 1H-MRS were recorded respectively and the liver fat fraction was calculated. Pearson correlation coefficient , Bland-Altman 95% limit of agreement, and concordance correlation coefficient were calculated. Results Mean liver fat fraction measured in RT and BH 1H-MRS were (8.6 ± 8.7)% and (9.4 ± 9.3)% respectively. There was a strong correlation between RT and BH 1H-MRS(r = 0.973, P < 0.000 1, concordance correlation coefficient = 0.95). With the Bland-Altman method, 91.7% data points were within the 95% limits of agreement. Conclusion RT and BH 1H-MRS are alternative tools for intrahepatic lipid quantification. These two methods have a strong correlation and perfect consistency.

Objective:To observe the clinical efficacy of Yin-Yang balancing acupuncture plus Tuina(Chinese therapeutic massage)for post-stroke depression(PSD). Methods:A total of 72 PSD patients were randomized into an acupuncture-Tuina group and a Western medicine group using the random number table method,with 36 cases in each group.The Western medicine group was treated with fluoxetine hydrochloride capsules.The acupuncture-Tuina group was treated with Yin-Yang balancing acupuncture plus Tuina therapy.Both groups were treated for 4 weeks.After treatment,the clinical efficacy was compared,and the changes in Hamilton depression scale(HAMD)score,National Institute of Health stroke scale(NIHSS)score,serum neurotransmitter levels,and electroencephalogram(EEG)were observed. Results:The total effective rate of the Western medicine group and the acupuncture-Tuina group was 83.3%and 94.4%,respectively.There was a significant difference in the total effective rate between the two groups(P<0.05).After treatment,the serum levels of 5-hydroxytryptamine(5-HT),norepinephrine(NE),and dopamine(DA)were higher than those in the same group before treatment,and the intra-group differences were all statistically significant(P<0.05).The serum levels of 5-HT,NE,and DA in the acupuncture-Tuina group were higher than those in the Western medicine group,and the differences between the groups were statistically significant(P<0.05).After treatment,the scores of HAMD and NIHSS in both groups decreased,and the intra-group differences were statistically significant(P<0.05).The scores in the acupuncture-Tuina group were lower than those in the Western medicine group,and the differences between the two groups were all statistically significant(P<0.05).After treatment,the EEG diffuse wave[(delta+theta)/(alpha+beta)]ratio(DTABR)and delta/beta ratio(DBR)in both groups decreased,and the intra-group differences were statistically significant(P<0.05).The ratios in the acupuncture-Tuina group were lower than those in the Western medicine group,and the differences between the two groups were statistically significant(P<0.05). Conclusion:Yin-Yang balancing acupuncture plus Tuina therapy has a better efficacy than oral fluoxetine hydrochloride capsules in the treatment of PSD,which can increase the levels of serum 5-HT,DA,and NE,and regulate brain waves.