Unlike conventional radiation therapy, stereotactic radiation therapy (SRT) is an emerging tumor-ablative radiation technology with a high-dose delivery to targets while dramatically sparing adjacent normal tissues. The strengths of SRT involve noninvasive and short-course treatment, high rates of tumor local control with a low risk of side effects. Although the scientific concepts of radiobiology fail to be totally understood currently, SRT has shown its potential and advantages against various tumors, especially for those adjacent to less tolerable normal organs (spinal cord, optic nerve, bowels, etc.). Nowadays, the clinical efficacy of SRT has been widely confirmed in certain patients, especially for those medically inoperable, unwilling to undergo surgery, medicine ineffective with tumor progression. Moreover, SRT could be properly used as palliative treatment aiming at relieving local symptoms and pain, and eventually achieving a potential survival benefit of several months. However, the weaknesses of SRT relate to inevitable radiation-induced toxicities as well as the inaccessibility of prophylactic irradiation. In general, one flaw cannot obscure the splendor of the jade. The emergence and development of SRT has opened the new era of precision radiation therapy, and SRT will probably step gloriously onto the remarkable stage for precision medicine.
Humans ; Neoplasms ; radiotherapy ; Precision Medicine ; Radiosurgery

Objective To study the sub chronic toxicity of silver nanoparticles on medaka.Methods Adult fish were divided into silve nenopartides and control group.Animals were collected on 14 days after exposure, and some toxicological endpoints such as death rate, tissue distributed of silver irons, oxidative stress and histopathological damage were measured.Results There were significant difference in death rate of medaka treated with silver nanoparticles and control group.Compared with the control group, the content of silver in gill, intestine and liver of medaka treated with silver nanoparticles were increased significantly.Compared with control group, the activity of LDH in liver and SOD in liver and gill were significantly decreased(P<0.01).The content of MDA in liver of medaka treated with silver nanoparticles was significantly increased(P<0.01).The liver and gill of mekada treated with silver nanoparticles were damaged, compared with control group.Conclusion Nano silver has a certain subchronic toxicity to aquatic life.

Objective To evaluate effect of humanized nursing on psychological state of patients with chronic urticaria receiving autohemotherapy. Methods 58 cases with chronic urticaria in our hos-pital were randomly divided into the observation group and the control group with 29 cases in each group, the control group was treated with conventional care, the observation group received conventional care combined with humanized nursing. The anxiety, depression and satisfaction degree were compared for these two groups and the data went through χ2 test and t test. Results The score of self- rating anxiety scale (SAS) and serf-rating depression scale (SDS) of the observation group was significantly lower than that of the control group, the satisfaction rate of the observation group was significantly higher than that of the con-trol group. Conclusions Application of humanized nursing in patients with chronic urticaria receiving autohemotherapy can reduce their anxiety and depression and has pivotal significance on treatment of pa-tients with chronic urticaria.

Objective To evaluate the capability of virtual non-contrast (VNC)of the second-generation dual-source CT (DSCT), and to display the adipose tissue of gastric serosa.Methods 48 patients with gastric cancer undergoing preoperative DSCT and sur-gery were enrolled.The true non-contrast (TNC)values and VNC values of perigastric adipose tissue were measured and compared with conventional non-contrast scanning and VNC of arterial phase and venous phase.The VNC values of perigastric adipose tissue were compared between serosal involvement group and non-serosal involvement group.Results There was statistical difference be-tween TNC values and VNC values of perigastric adipose tissue (P <0.05),the absolute differences were under 13 HU.The differ-ence of VNC values between serosal involvement group and non-serosal involvement group was significant (P <0.05).Conclusion VNC of the second-generation DSCT can clearly display the adipose tissue of gastric serosa.It has certain capability in judging sero-sal involvement.VNC has the proficiency to replace conventional non-contrast scanning.

Objective To evaluate the clinical efficacy in the treatment of unilateral micrognath ia by using EAM medical resin and hydroxyapatite (EH) composite material combined with the CAD/ CAM technique.Methods From July 2011 to October 2015,12 cases of unilateral micrognathia caused by different reasons were treated,based on the representative traits and requirements,refering to the unsymmetric counter part by right of CAD/CAM technique.By the 3-dimensional design and reconstruction,we reformed the EH composite material into purposed shape,and insert it in the operative area.Results All the materials were closely suitable to the mandible surfaces.1 case failed because the wound was torn apart;the other 11 patients recovered more than 6 months and were satisfied with the external appearance.Conclusions The EH composite materials combined with CAD/ CAM techniques could be a potential characterized remedy for the unilateral micrognathia.

OBJECTIVETo study whether the analgesis of oxymatrine (OMT) affects N-type voltage-gated calcium channels (VGCCs).

METHODSTotally 45 mice were randomly divided into the sham-operation group, the model group [established by partial sciatic nerve ligation (PSNL)] , and the OMT treatment group according to random digit table, 15 in each group. The dorsal root ganglions (DRG) were separated in PSNL pain model mice. Intracellular calcium concentration ([Ca2+]i) was determined with Fluo-3 AM immunofluorescent probe in cultured DRG neurons. Different protein expression levels of N-type (Cav2. 2) and L-type ( Cav1. 3) among VGCCs from brain and DRG tissues were detected with Western blot.

RESULTSCompared with the sham-operation group, [Ca2+]i, increased in cultured DRG neurons (P <0. 05) , protein expression levels of Cav2. 2 in the brain tissue increased (P <0. 05), protein expression levels of Cav2. 2 in DRG tissues decreased in the model group (P <0. 01). Compared with the model group, [Ca2+]i, decreased in cultured DRG neurons (P < 0. 05), protein expression levels of Cav2. 2 in the brain tissue decreased (P <0. 01), protein expression levels of Cav2. 2 in DRG tissues increased in the OMT treatment group (P <0. 01). There was no statistical difference in Cav1. 3 expressions in cultured DRG neurons and the brain (P >0. 05).

CONCLUSIONAnalgesic effect of OMT might be related to Cav2. 2 channel mediated calcium ion flux.

Alkaloids ; pharmacology ; Analgesia ; methods ; Analgesics ; pharmacology ; Aniline Compounds ; Animals ; Calcium ; Calcium Channels, N-Type ; physiology ; Ganglia, Spinal ; Mice ; Neurons ; Pain ; Quinolizines ; pharmacology ; Xanthenes

Objective To evaluate the feasibility of transfection of Sonic hedgehog gene (SHH)into bone marrow mesenchymal stem cells(BMMSC).Methods After the SHH gene was transfected into BMMSC by electroporation apparatus,the transfection rate was evaluated by fluorescence inverted microscope.The growth curves of untransfected and transfected BMMSC were drawn,respectively,to observe the influence of transfection on cells.The expression of SHH gene in the BMMSC was detected by PCR,RT-PCR,Western-blot analyses.Results Through fluorescence inverted microscope,the observed transfection rate was appropriately 30％,PCR showed a obvious increase of SHH expression in transfected cells than that in untransfected cells,and it is quantified by qPCR for appropriately 7 times.Western-blot further demonstrated that the SHH protein expression in transfected cells had a distinct increase.However,it was observed that the exponential phase of BMMSCSHH growth curve delayed.The growth curves of both overlap 12 days after transfection.Conclusions This electroporation method can transfect exogenous SHH gene into BMMSC sufficiently with the effective protein expression in BMMSCSHH.It is the foundation of further research of genetic therapy for ischemic heart disease.

BACKGROUND:Human embryonic stem cels exhibit self-renewal and multi-differentiation potential, and can differentiate into endothelial cels under certaininduction conditions.
OBJECTIVE:To explore induced conditions of the human embryonic stem cels differentiating into endothelial cels and to investigate the effect of vascular endothelial growth factors on theendothelial differentiation of human embryonic stem cels.
METHODS:After resuscitation,passage40 human embryonic stem cel lines H9 weresubjected to suspension culture to prepare embryos, and after 5-day culture,these cels werecultured in attachment medium to differentiate into embryoid bodies,folowed by induction with50 μg/L vascular endothelial growth factors. Passage 2 and 15 embryonic stem cels after induced differentiation weretaken for Dil-Ac-LDL uptake test and immunohistochemical staining, respectively.
RESULTS AND CONCLUSION:After 1-day culture, cord-like or polygonal monolayer cels around embryoid bodies showed bud-like andradialgrowth witharelative rapid speed merging into surrounding colonies; at 2-3 days, the number of suspension cels increased further, but the smal-round cels in the center began to die; at 5 days, embryoid bodies started to passage, and aggregated cels exhibited typical paving stone-like appearance. Moreover, some human embryonic cels after induced differentiation could actively takeupfluorescent labeled LDL,andred fluorescent particlesappeared.Additionaly, passage 15 embryonic stem cels after induced differentiation could express CD31 and FLK-1.These findings suggest that human embryonic stem cels induced by vascular endothelial growth factors can differentiate into endothelial cels.

This paper is to report the polymorphism of raw materials of clopidogrel bisulfate at home and abroad. By the analysis of Fourier transform infrared spectroscopy (FTIR) and powder X-ray diffraction (p-XRD), samples are roughly classified into two groups, except one patent material. And the differential scanning calorimeter (DSC) examination showed more detailed information for these materials. The results of the study could provide comprehensive basis for the quality evaluation of clopidogrel bisulfate.

Objective Surgical treatment of lung cancer needs to follow strict quality control standard for the aims of accuracy of pathological staging and potentially improved prognosis.However,there are short of studies related to surgical quality analysis.Methods One hundred and twelve patients were enlisted with the diagnosis of lung cancer and received surgical intervention in 2007.Surgical quality of these cases were retrospectively analyzed in compliance with three international standards,National Comprehensive Cancer Network (NCCN),American College of Surgeons’ Oncology Group (ACOSOG),and International Association for the Study of Lung Cancer (IASLC).Results No surgical death was reported in this group.According to NCCN,ACOSOG and IASLC standards,qualified operations were 82 cases (80.4％),73 cases (71.6％),45 cases (44.1％) in 102 cases with R0 resection,respectively.The median total lymph nodes,median mediastinal nodes,and N1 nodes were 27 (range 0-63),16.5 (range 0-43),and 10.5 (range 0-26),respectively.The median mediastinal node stations resected were 4 (range 0-6).In the mediastinum,stations of 4R,5,6 and 7 presented the highest frequency of receiving lymph node dissection.For N1 stations,10 and 12 were among the top list.For the whole group,1-year survival,3-year survival and 4-year survival were 92％ (95％ CI,89-95),67％ (95％ CI,62-72),57％ (95％ CI,52-62),respectively.Conclusion Quality control is the essential part of surgical treatment of lung cancer,which will facilitate the baseline standardization of clinical research.Since IASLC provides the strictest standard for lung cancer surgery,we suggest that all thoracic surgeons need to follow this standard to secure the accuracy of pathological diagnosis and for a potential better prognosis.