Radiation-induced brain injury is a serious untoward effect of radiotherapy for malignant tumors. Patients received radiotherapy frequently occur cognitive dysfunction which seriously affects the quality of life. Although the exact mechanisms regarding radiation-induced cognitive dysfunction remain unclear, prevention strategies targeting cognitive dysfunction are increasingly applied to clinical intervention, including whole brain radiotherapy with hippocampus avoidance, stereotactic radiosurgery in patients with multiple brain metastases, and pretreatment with neuroprotective drugs such as memantine and donepezil. In addition, measures including appropriate radiotherapy management models, regular cognitive tests, and therapeutic measures at the appropriate time are critical to improve the quality of life for brain tumor patients.

Background and purpose: Diffusion-weighted whole-body imaging with background body signal suppression (DWIBS) can be used for magnetic resonance imaging systemic examination, especially in examing the metastatic lesions, lymph node and bone diseases, and the imaging result is similar with PET. This study aimed to evaluate the application value of magnetic resonance DWIBS and positron emission tomography with computed tomography (PET/CT) on malignant metastatic diseases. Methods: Thirty-six patients confirmed with malignant tumors accompanying metastasis by the pathology of operation or biopsy underwent both DWIBS imaging and PET/CT, chi-square test and Kappa test were used for comparing the detection results of metastasis by these 2 imaging methods. Results:Among the 36 malignant tumor patients with 238 metastatic lesions, 218 (91.6%, 218/238) lesions in DWIBS and 209 (87.8%, 209/238) lesions in PET/CT were detected, with 200 lesions detected by the two methods simultaneously, and the concordance rate was 88.7%(211/238);but there was no statistical signiifcance between this two methods (χ2=1.843, P=0.157). Kappa test showed a fair concordance rate between DWIBS and PET/CT (P=0.000).There were different significance between DWIBS and PET/CT in detecting metastatic lesions of brain and bone (P=0.005 and 0.031);But there was no signiifcant differences (P=0.309 and 1.000) in detecting metastatic lesions of lymph nodes and liver. Conclusion:DWIBS could detect metastatic lesions effectively, and there is ifne consistency with PET/CT. DWIBS is more sensitive than PET/CT in detecting metastatic lesions of brain and bone, so DWIBS could be chosed for screening metastatic lesions according to the characteristics of different primary tumors.

Objective To investigate the role and the mechanism of ppk1 gene (coding for polyphosphate kinase 1) in oxidative stress resistance in uropathogenic Escherichia coli (UPEC).MethodsMutant strains with ppk1-deletion (△pk1) and complemented strains (△pk1-C) were constructed based on the UPEC strain CFT073.A comparative analysis was conducted to analyze survival rates of CFT073, △pk1 and △pk1-C strains at different time points while they were under oxidative stress.Differences in protein expression between CFT073 and △pk1 strains were analyzed using mass spectrometric analysis.Differences between CFT073 and △pk1 strains in expression of katG and katE genes were analyzed using real-time quantitative RT-PCR.Results The survival rate of △pk1 strains was lower than that of CFT073 strains at every time point, while the survival rate of △pk1-C strains was basically the same as that of CFT073 strains.Gel image analysis and mass spectrometric analysis revealed that six proteins were down-regulated and one was up-regulated in △pk1 strains as compared with those in CFT073 strains.Expression of the catalase-coding genes katG and katE in △pk1 strains were respectively (20.5±8.2)% and (20.9±6.9)% of those in CFT073 strains (P<0.05).Conclusion The ppk1 gene plays an important role in oxidative stress resistance in UPEC by modulating the expression of catalase-coding genes katG and katE.

Objective: To provide basis for the preparation process study by establishing an HPLC determination method for nicotinate-curcumin ester.Methods: A C18 column(250 mm×4.6 mm,5 μm) was used at 30℃ with the mobile phase of acetonitrile-0.5% acetic acid glacial(65∶35) at a flow rate of 1.0 ml·min-1.The UV detection wavelength was 280 nm.Results: The good linear relationship of nicotinate-curcumin ester was shown within the range of 5.200-104.000 μg · ml-1(r=0.9999 4), The average recovery of nicotinate-curcumin ester and its nanoparticles was 100.1% and 100.9%with RSD of 1.260% and 0.995 0%(n=6), respectively.Conclusion: The method is convenient, accurate and reproducible, and suitable for the determination of nicotinate-curcumin ester nanoparticles and the studies on the preparation technology.

Objective To analyze the clinical features and common etiology of lung nodules in children. Methods The etiology, diagnosis, radiological features from 98 hospitalized children of lung nodules were analyzed. Results Of them, 58 were male and 40 were female aged from 0.2 years old to 14.8 years old. Pulmonary infection were found in 41 cases (41.8%) including tuberculosis in 15 cases (15.3%), pulmonary fungal infection in 13 cases (13.3%), pneumonia in 11 cases (11.2%), lung trematode in 2 cases (2.0%). Pulmonary metastases were found in 28 cases (28.6%), multiple pulmonary arteriovenous fistula in 1 case (1.0%), and pulmonary contusion in 1 case (1.0%) and unknown etiology in 27 cases (27.6%). Conclusions The etiology of lung nodules is complicated, in which infectious diseases are the most commonly seen, followed by pulmonary metastases. Biopsy is the golden standard of diagnosis.

Objective:To investigate the efficacy and safety of brain protein hydrolysate injection in the treatment of elderly patients with parkinson.Methods:120 patients with parkinson were selected and randomly divided into two groups.The control group (57 cases) was treated by routine treatment,while the observation group (63 cases) was given brain protein hydrolysate injection on the basis of routine treatment.The UPDRS scores,SF-36 scores and adverse reactions during treatment were observed and recorded.Results:Before treatment,the UPDRS and SF-36 scores of both groups had no significant difference (P＞0.05).After treatment,the UPDRS scores of both groups were significantly decreased,and the UPDRS score of observation group was lower than that of the control group(P＜0.05).The social function,emotional function,mental health score of observation group were higher than those of the control group(P＜0.05).During treatment,1 cases of dizziness,1 cases of nausea were found in the control group.The adverse reaction rate was 3.5％.2 cases of insomnia,1 cases of fatigue,1 cases of dizziness and 1 cases of nausea were found in the observation group.The adverse reaction rate was 7.9％.There was no statistical difference in the incidence of adverse reactions between two groups (P＞0.05).Conclusion:Brain protein hydrolysate injection had significant effect on the Parkinson.It could improve the patients' thinking ability,mental health and quality of life with high safety.

Background and purpose:Diffusion-weighted whole-body imaging with background body signal suppression (DWIBS) can be used for MR imaging systemic examination, especially the lymph node and bone diseases can be clear, and the imaging result is similar with PET. The aim of this study was to compare the value of clinical application in the diagnosis of malignant metastatic osteopathic between DWIBS and bone scintigraphy mapping. Methods:Thirty-six specimens conifrmed with malignant tumors by the pathology of operation or biopsy underwent both DWIBS imaging and bone scintigraphy mapping, chi-square test was used for comparing the detection results of bone metastasis by this two imaging methods. Results:Thirty (165 positions in all) of 36 malignant tumor patients were conifrmed as having bone metastasis, compared that 26 patients (143 positions) with DWIBS method and 23 patients (132 positions) with bone scintigraphy mapping were detected, but there was no statistical signiifcance between this two imaging methods (χ2=1.002, P=0.506). The sensitivity, positive predictive value (PPV) and accuracy of the detection rate of bone metastasis were similar in DWIBS and bone scintigraphy, with 86.7%, 96.3%, 86.1%and 76.7%, 88.5%, 72.2%, respectively;but the speciifcity and negative predictive value (NPV) in DWIBS (83.3%and 55.6%) was higher than that of in bone scintigraphy (50.0%and 30.0%). The detection rates of different bone metastasis with DWIBS and bone scintigraphy were 86.7%(143/165) and 80.0%(132/165), and it was no signiifcant difference (χ2=2.640, P=0.104);DWIBS method was better than bone scintigraphy in the detection of osseous metastasis on pelvis and limbs long bone, and there was different signiifcant (χ2=6.783 and 7.636, P=0.023 and 0.016). Conclusion:DWIBS could detect bone metastatic lesions effectively, and there is ifne consistency with bone scintigraphy. Therefore, DWIBS is to hope to be extended and applicated clinically.

Objective To investigate the association of single nucleotide polymorphisms (SNPs) in the SCGB3A2(secretoglobin family 3A member 2) gene promoter with susceptibility of Graves' disease.Methods One-hundred and seventy-nine SNPs within a 3.0 Mb region surrounding marker D5s2090 were scanned in a case-control study.The size of the region(s) associated with GD was then narrowed.Results Total 179 SNPs within a 3.0 Mb region surrounding marker D5s2090 were analyzed.The most significant association signal was found at SNP rs1368408 (P =3.69 × 10-5).Subsequent association analysis was then performed and the results suggested that the SNP76 (P =4.11 × 10-8) and SNP75 (P =1.37 × 10-8) in the promoter of SCGB3A2 gene may be the causal variants of GD.Logistic regression analysis suggested these 2 SNPs in this region may contribute to GD susceptibility.Conclusion A significant association seems to exist between GD with the SCGB3A2 gene.

Objective To investigate the etiology of acute recurrent pancreatitis (ACP) and de-termine how to further enhance its level of treatment.Methods The clinical data of 33 patients with ACP treated in Ruijin Hospital from 2003 to 2007 were retrospectively analyzed.Results Of the 33 patients with an average age of 55 (22-86), 18 (55%) were male and 15 (45%) female.ACP occurred once in 26 patients, twice in 4 and 3 times in 3.The disease appeared whithin 1 year in 29 patients, 1-2 years in 2, 2-3 years in 1 and 3 years in 1 after being dischared from hospital.For its etiology, it was of biliary origin in 29 patients, hyperlipidemia in 1, pancreatic tumor in 1 and unknow reasons in 2.Twenty-four patients were treated with operation or endoscopy.Two patients died and the mortali-ty was 9.1%.Conclusion ACP is mainly due to biliary origin in China.Operative intervention at an appropriate opportunity can effectively reduce the recurrence of biliary-origin pancreatitis.

The incidence rate of thyroid cancer and thyroid nodule in China are rising and surgical operation is the main treatment for thyroid nodule and thyroid carcinoma.It has been controversial whether thyroid surgery is suitable for day surgery.Perfect preoperative examination and anesthesia assessment,selection of an appropriate of patients and minimally invasive surgery,good postoperative analgesia and the prevention and treatment of postoperative nausea and vomiting,recognition and treatment of postoperative complications timely,postoperative follow-up,can ensure safety of patient with thyroid ambulatory surgery,and made the same medical quality as the surgery in hospital.Under certain criteria,thyroid ambulatory surgery is safety,high efficient,economy and time-efficient.It is a reasonable surgical management mode which can reduce days of hospitalization and hospitalization cost.But it still need further study on the inclusion and exclusion criteria of patients,anesthesia techniques and perioperative management.