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 efficacy and safety of reboxetine and citalopram in treating retardant depression.Methods A total of 59 patients with retardant depression were randomly divided into reboxetine group(n=29)and citalopram group(n=30)for the treatment of 6 weeks.The patients were assessed with the Hamilton depression scale(HAMD)and treatment emergent symptom scale(TESS).Results At the end of 6 weeks,the total scores of HAMD in reboxetine(18.48±6.38)group and citalopram(11.60±4.46)group both significantly decreased(P＜0.001).Between two groups,the efficacy(82.8% and 56.7%)had significant differences(P＜0.05)but side effects had no statistical significance.Conclusion Reboxetine has significant curative efficacy,milder adverse effects and higher safety for treating patients with retardant depression.

Based on the realistic circumstances at home and successful experiences from abroad,this paper holds the idea to introduce medical liability insurance into medical market to relieve the currently tense physician-patient conflict and analyzes the role and function of medical liability insurance.Meanwhile,some problems and countermeasures are also explained in the functioning process of medical liability insurance.

Objective The clinical and endoscopic characteristics of ischemic colitis (IC) were retrospectively reviewed. Methods 23 aged patients with IC were included; their symptoms,signs,laboratory findings and endoscopic appearances analysed. Results IC occurred most frequently in mid-aged and elders with predominant presentations as acute onset of lower abdominal pains and bloody stools.Endoscopic lesions located mainly in left colon with segmental distribution.Mucosal edema,erosion and submucosal bleeding were common pathological features.Most lesions (91％ ) looked to be nongangrenous, transient and reversible.Only 9 percent of cases turned into chronic stage. Conclusion IC should be suspected in all eldly patients with acute onset of lower abdominal pain and bloody stools.Early colonoscopy is of diagnostic significance.

Objective To evaluate the clinical application of transendoscopic Doppler ultrasonogra-phy in various gastrointestinal diseases. Methods Transendoscopic Doppler ultrasonography was performed in 59 patients with various gastrointestinal diseases. Results The Doppler signals were detected beneath the peptic ulcer base in 29 of 39 patients (74. 4% ) . For acute ulcer bleeding and non - bleeding, the Doppler - positive rates were 87. 5% and 65. 2% , respectively, and the measured depth of vessels were 0. 49 mm and 0. 65mm (P

The Infectious hypodermal and hematopoietic necrosis virus (IHHNV) and Taura syndrome virus (TSV) are two important shrimp viruses in cultured shrimp in America. These two viruses were transmitted to China at the beginning of the 21st century. In this study, 214 shrimp samples of Penaeus vannamei were collected from seven different areas of China and tested by PCR for IHHNV and TSV infection. The results showed that there were a high prevalence of IHHNV (65.42%) and low prevalence of TSV (3.27%) in the tested samples. Several samples were found to be co-infected with these two viruses. A 3 kb fragment of 7 positive IHHNV samples and a structure protein region (ORF2) of three TSV positive samples were amplified and sequenced. The sequence comparison indicated that both IHHNV and TSV sequenced in China have a low genetic variations compared with the prototype IHHNV and TSV from Hawaii. Phylogenetic analysis showed that TSV isolates were clustered into two groups, Asia and America group, which was genetically correlated to geographic distribution.

Objective To assess the effects of music intervention on physiological and psychological responses of patients with cancer. Methods A computerized search in China Biology Medicine, China National Knowledge Infrastructure,Wanfang data ,VIP, Cochrane library, Web of Science and PubMed was performed for relevant randomized control trials comparing the effects of music intervention on physiological and psychological responses of patients with cancer. The quality of studies was critically appraised and data were extracted by two reviewers independently. The Cochrane-Handbook5.0 was used to evaluate the quality of studies. Data was analyzed by RevMan5.0 software. Results A total of 29 randomized control trials were involved. Eleven studies about the effects of music intervention on anxiety level of patients with cancer were assessed with Self-rating Anxiety Scale,Meta analysis confirmed that music intervention could effectively reduce the anxiety level of patients with cancer (WMD=-11.74, 95%CI-11.94--8.53, P<0.01). Four studies about the effects of music intervention on anxiety level of patients with cancer were assessed with state-trait anxiety inventory,Meta analysis confirmed that music intervention could effectively reduce the anxiety level of patients with cancer (WMD=-8.24, 95%CI-9.44--7.04, P<0.01). Meta-analysis showed that music intervention was able to relieve anxiety, depression, pain of patients with cancer. Two studies about the effects of music intervention on anxiety level of patients with cancer were assessed with Hamilton Anxiety Scale,Meta analysis confirmed that music intervention could effectively reduce the anxiety level of patients with cancer (WMD=-3.37, 95%CI-4.93--1.82, P<0.01). Fourteen studies about the effects of music intervention on depression level of patients with cancer were assessed with Self-rating Depression Scale,Meta analysis confirmed that music intervention could effectively reduce the depression level of patients with cancer (WMD=-8.12, 95%CI-10.75--5.49, P<0.01). Three studies about the effects of music intervention on depression level of patients with cancer were assessed with Hamilton Depression Scale,Meta analysis confirmed that music intervention could effectively reduce the depression level of patients with cancer (WMD=-3.27, 95%CI-6.34--0.21, P=0.04). A total of 9 studies were conducted to evaluate the effects of music intervention on patients with the pain Visual Analogue Scale,Meta analysis confirmed that music intervention could effectively reduce the pain level of patients with cancer (WMD=-0.83, 95%CI-1.23--0.44, P<0.01).A total of 6 studies were conducted to evaluate the effects of music intervention on heart rate in cancer patients,Meta analysis confirmed that music intervention could stabilize the heart rate of patients (WMD=-3.38, 95%CI-5.13--1.62, P=0.002).A total of 6 studies were conducted to evaluate the effects of music intervention on systolic blood pressure in patients with cancer,the results of Meta analysis showed that music intervention could stabilize the systolic pressure in patients (WMD=-5.34, 95%CI-7.95--2.73, P<0.01). Conclusions Music intervention has effects on reducing potentially harmful psychological responses of patients with cancer,which deserve to be explored and spread in clinical practice.

The nucleocapsid protein VP15 of white spot syndrome virus (WSSV) is a basic DNA-binding protein. Three canonical bipartite nuclear localization signals (NLSs), called NLS1 (aa 11-27), NLS2 (aa 33-49) and NLS3 (44-60), have been detected in this protein, using the ScanProsite computer program. To determine the nuclear localization sequence of VP15, the full-length open reading frame, or the sequence of one of the three NLSs, was fused to the green fluorescent protein (GFP) gene, and transiently expressed in insect Sf9 cells. Transfection with full-length VP15 resulted in GFP fluorescence being distributed exclusively in the nucleus. NLS 1 alone could also direct GFP to the nucleus, but less efficiently. Neither of the other two NLSs (NLS2 and 3) was functional when expressed alone, but exhibited similar activity to NLS1 when they were expressed as a fusion peptide. Furthermore, a mutated VP15, in which the two basic amino acids (11RR12) of NLSI were changed to two alanines (11AA12), caused GFP to be localized only in the cytoplasm of Sf9 cells. These results demonstrated that VP15, as a nuclear localization protein, needs cooperation between its three NLSs, and that the two residues (11RR12) of NLS1 play a key role in transporting the protein to the nucleus.

Objective To construct the eukaryotic expression vector of pprI gene from Deinococcus radiodurans R1 and investigate its radioresistant effects in eukaryotic cells.Methods A recombinant vector pEGFP-c1-pprI was constructed by DNA recombinant technique.The empty vector pEGFP-c1 and the pEGFP-c1-pprI were transferred into human lung epithelial cells Beas-2B by LipofectamineTM 2000,respectively.Then the infected cells were screened in order to develop a cell line with stable expression of pprI gene.Cell survival rate was tested by clone-forming assay.Cell cycle distribution and apoptosis were detected by a flow cytometry.The fluorescence intensity of reactive oxygen species (ROS) was observed by a fluorescent microscope.γ-H2AX foci in the irradiated cell was detected by immunofluorescence.Results The eukaryotic expression plasmid of pprI prokaryotic gene was constructed and PprI fusion protein was expressed in human lung epithelial cells successfully,and the cell line (2BG) with a stable pprI gene expression was established.After irradiation,the cell survival fraction of 2BG cells was significantly higher than Beas-2B cells so that the value of D0 、Dq and N of the survival curve were increased.Moreover,the fluorescence intensity of ROS and the number of γ-H2AX foci in 2BG cells were also lower than those of B eas-2B cells(F =16.73,19.47,6.94,P ＜ 0.05).Between these two cell lines,the apoptosis rate and cell cycle G2 arrest also had significant difference (F =139.73,237.92,P ＜ 0.05).Conclusions The pprI gene from Deinococcus radiodurans RI can be stably expressed in the eukaryotic cells and it allows the transferred cells to have a radioresistant function.

Objective To investigate the clinical characteristics and treatment of acute postrenal acute renal dysfunction associated with ceftriaxone.Methods Twenty-five cases of the ceftriaxione-associated acute postrenal renal insufficiency were reviewed.There were 16 males and 9 females,mean age 28years.The serum contents of BUN and Cr were ( 18.6 ± 7.0) mmol/L and (635.5 ± 248.7 ) μmol/L,respectively.All patients were divided into two groups depending on the therapy:11 patients accepted the drug therapy (alkalinization of the urine,antispasmodic,etc) and 14 patients accepted the intraureteral cannula.The clinical characteristics and the treatment effect were compared between the 2 groups.Results The patients of the intraureteral cannula group ( 1.4 ± O.7 d) went to hospital earlier than the drug therapy group (3.0 ± 1.4 d) ( P =0.045 ) after the symptom of oliguria or anuria appeared.There were no significant differences in serum creatinine,urea nitrogen,and the age between the 2 groups ( P ＞ 0.05 ).All the patients were cured after treatment.There were no significant differences in recovery time (2.9 ± 1.1 d and 3.2 ± 1.2 d,P =0.963) and hospitalization time (7.0 ±2.3 d and 5.9 +3.9 d,P =0.568) between the 2 groups.Conclusions The acute renal failure associated with ceftriaxone should have high attention.The prompt medical attention,including the intraureteral eannula and the drug therapy,can both achieve the satisfying curative effect.