OBJECTIVETo study the effect of chemotherapy with drugs selected according to drug sensitivity test and drug- resistance gene assessment in mice bearing tumors derived from high-passage gastric cancer cells.

METHODSChemosensitivity of the mouse gastric cancer cells to 6 chemotherapeutic drugs was investigated using MTT assay before the 6 drugs were applied in mice with implanted tumors. The implanted tumor volume and tumor inhibition rate were observed, and the expression of the multidrug resistance-1 (MDR1) gene was detected.

RESULTS5-FU, the most sensitive among the 6 drugs, resulted in significantly higher tumor inhibition rates in comparison with the control group, but did not significant affect MDR1 expression. Adriamycin (ADM) had the lowest sensitivity with low tumor inhibition rates and no significant effect on MDR1 expression. Cisplatin (DDP) was identified as the most sensitive drug for mouse gastric cancer with previous 5-FU exposure, and Mitomycin (MMC) was the most insensitive drug for mouse gastric cancer with previous ADM treatment. In mice bearing tumors of the second-passage cells, DDP showed high tumor inhibition rate but scarcely affected MDR1 expression; MMC resulted in low tumor inhibition rate and high MDR1 expression. Application of 5-FU and ADM in these tumor-bearing mice of the second-passage cancer cells resulted in rather low tumor inhibition rates without significant alterations in MDR1 expression as compared with the control group.

CONCLUSIONAppropriate individualized chemotherapy should be implemented in full consideration of the results of drug sensitivity test and drug-resistance gene assessment.

ATP-Binding Cassette, Sub-Family B, Member 1 ; biosynthesis ; Animals ; Antineoplastic Agents ; pharmacology ; Carboplatin ; pharmacology ; Cell Line, Tumor ; Cisplatin ; pharmacology ; Doxorubicin ; pharmacology ; Drug Screening Assays, Antitumor ; Fluorouracil ; pharmacology ; Immunohistochemistry ; Mice ; Mitomycin ; pharmacology ; Neoplasm Transplantation ; Stomach Neoplasms ; drug therapy ; metabolism ; pathology ; Treatment Outcome ; Tumor Burden ; drug effects

OBJECTIVETo prevent chronic severe hepatitis, even more fulminant hepatic failure (FHF) occurrence in patients with chronic hepatitis B of severe degree using steroid.

METHODS120 patients were randomized into conventional supporting treatment and steroid treatment groups. The latter, 62 patients were given intravenously hydrocortisone sodium succinate at the dose of 150 mg to approximately 200 mg everyday plus support care.

RESULTSThe rate of deteriorating to chronic severe hepatitis in steroid treatment group was significantly lower than that of conventional group (22% vs 48%, x(2) =7.60, P<0.01). 53.6% (15/28) patients with chronic severe hepatitis in conventional group died, while only 28.6% (4/14) in steroid treatment group succumbed to terminal liver disease (x(2)=0.02, P>0.05). There was no difference between the two groups regarding to complications incidence: gastrointestinal bleeding and infections except for some controllable serious reverse events, such as candidiasis, diabetes, herpes zoster and pulmonary tuberculosis found in some patients in steroid-treated group.

CONCLUSIONThese results suggest that steroid administration with improved support care not only is likely to prevent chronic severe hepatitis occurrence in patients with chronic viral hepatitis of severe degree, but also shows some efficacy for FHF, which warrant further investigation.

Adult ; Female ; Glucocorticoids ; therapeutic use ; Hepatitis B, Chronic ; complications ; drug therapy ; Humans ; Liver Failure ; prevention & control ; Male

A field trial was carried out to study the influence of different kinds of spring topdressing on growth, yield and quality of Ligusticum chuanxiong. The results showed that the spring topdressing had effects of improving root length, tiller numbers and plant height to some extent. At the same time the chlorophyll content and dry weight accumulation especially the dry weight of root increased significantly. It also showed that the yield increased and quality was improved significantly. The effect of different treatment with urea58.7 kg x hm(-2)(N 27 kg x hm(-2)) was the best and the treatment with N,P,K the second.
Alkaloids ; metabolism ; Coumaric Acids ; metabolism ; Fertilizers ; Ligusticum ; growth & development ; metabolism ; Seasons

Objective To explore the distribution of water with high level arsenic and prevalence of arsenism along Huai'he River and the surrounding area of Hong'ze lake in Huai'an of Jiangsu. Methods Wate rsamples were collected and tested in 2008 from 18 villages of 6 towns according to history data in 3 counties like Xuyi,Jinhu and Hongze. Samples having arsenic level higher than 0.05 mg/L were investigated by epidemiological method and the patients were diagnosed by Standard of Diagnosis for Endemic Arsenism. Results All 5199 water samples were determined,and 260 water samples were exceeding the national drinking water quality level (0.05 mg/L) in 3 counties,the rates of exceeding diagnosis were 5.6%(247/4454),0.7%(4/597),6.0%(9/148) respectively. Total detected rate of endemic arsenic disease was 5.94%(128/2155). The detected rates of age group of 0 ～ ,20 ～,30 ～ ,40 ～ ,50 ～ ,60 ～ ,70 ～ ,80 ～ were 2.86%(1/35),2.11%(2/95),1.26%(3/239),3.10%(16/516),5.53% (32/579),10.07%(41/407),11.84%(27/228),10.71%(6/56) respectively. The detected rate of male (9.10%,78/857) was higher than that of female(3.85%,50/1298,χ~2 = 25.46,P < 0.01). Conclusions Huai'he River and the surrounding areas of Hong'ze lake like Xuyi,Jinhu and Hongze are identified existing endemic arsenic disease area. The prevention of arsenism should be strengthened in these areas.

OBJECTIVETo review the literature on the clinical progress in cauda equina syndrome (CES), including the epidemic history, pathogenesis, diagnosis, treatment policy and prognosis. Data sources All reports on CES in the literature were searched in PubMed, Ovid, Springer, Elsevier, and the Chinese Biomedical Literature Disk using the key terms "cauda equina syndrome", "diagnosis", "treatment", "prognosis" and "evidence-based medicine". Study selection Original milestone articles and critical reviews written by major pioneer investigators about the cauda equina syndrome were selected.

RESULTSCES is rare, both atraumatically and traumatically. Males and females are equally affected. The incidence of CES is variable, depending on the etiology of the syndrome. The most common cause of CES is herniation of a lumbar intervertebral disc. CES symptoms may have sudden onset and evolve rapidly or sometimes chronic ally. Each type of CES has different typical signs and symptoms. Low back pain may be the most significant symptoms, accompanied by sciatica, lower extremities weakness, saddle or perianal hypoesthesia, sexual impotence, and sphincter dysfunction. MRI is usually the preferred investigation approach. Patients who have had CES are difficult to return to a normal status.

CONCLUSIONSThe diagnosis of CES is primarily based on a careful history inquiry and clinical examination, assisted by elective radiologic investigations. Early diagnosis and early surgical decompression are crucial for a favorable outcome in most CES cases.

Evidence-Based Medicine ; methods ; Female ; Humans ; Magnetic Resonance Imaging ; Male ; Polyradiculopathy ; diagnosis ; etiology ; pathology

To effectively guarantee quality of randomized controlld trial (RCT) of acupuncture and develop reasonable content and checklist of on-site quality control, influencing factors on quality of acupuncture RCT are analyzed and scientificity of quality control content and feasibility of on-site manipulation are put into overall consideration. Based on content and checklist of on-site quality control in National 11th Five-Year Plan Project Optimization of Comprehensive Treatment Plan for TCM in Prevention and Treatment of Serious Disease and Clinical Assessment on Generic Technology and Quality Control Research, it is proposed that on-site quality control of acupuncture RCT should be conducted with PICOST (patient, intervention, comparison, out come, site and time) as core, especially on quality control of interveners' skills and outcome assessment of blinding, and checklist of on-site quality control is developed to provide references for undertaking groups of the project.
Acupuncture Therapy ; standards ; China ; Humans ; Quality Control ; Randomized Controlled Trials as Topic ; standards ; Research Design ; standards

[Objective] To investigate the knowledge and discrimination of AIDS among freshmen in a university of Hefei City, so as to provide evidence for AIDS education and improve discrimination status.[Methods] A total of 317 students from a university of Hefei City were randomly selected using cluster sampling method and a questionnaire survey was conducted on them about AIDS knowledge and discrimination. [Results]The awareness rate of AIDS/HIV knowledge was 67.2％ in students. The total scores of AIDS discrimination knowledge attitude, emotional attitude and AIDS discrimination attitude were higher in the students without knowledge of AIDS than those with knowledge of AIDS, and the differences were statistically significant (P<0.05). In the discrimination behavior tendency, the score of the students in the knowledge group was higher than that in the no knowledge group, and the difference was statistically significant (P < 0.05). [Conclusion] The awareness of AIDS/HIV knowledge among freshmen in a university of Hefei City is good, but discrimination is widespread, and the degree of AIDS related knowledge directly affects the discrimination degree of AIDS discrimination. In future, we should strengthen the AIDS knowledge system education and pay more attention to the anti-discrimination propaganda intervention, especially the comprehensive intervention against behavior tendency.

Objective To study the MRI appearance and clinical features of dysembryoplastic neuroepithelial tumor (DNT) to improve accurate diagnosis of DNT. Methods The clinical data and MRI appearance of 12 patients with DNT confirmed by surgery and pathology were analyzed retrospectively. Routine MRI was performed in all of the 12 patients, and also dynamic contrast-enhanced MR imaging in 10 of them. Results Eight lesions resided in the temporal lobes, 2in the frontal lobe, and the other 2 in the parietal lobe. All of the 12 DNTs located in supratentorial hemisphere cortex, and 6 of them encroached the adjacent white matter. The lesions appeared as hypointense or iso-hypointense signal on T1WI of MRI, and hyperintense on T2WI and FLAIR of MRI.Cystic structure was shown in all the lesions or as its main part, and mesh-separated structure was also noted in some of the tumors. Five lesions appeared as a triangle in shape, 5 in gyrus-like shape and the remaining 2 in round shape. All the tumors had no significant mass effect with 1 having mild edema around the tumor. Enhanced MR imaging showed only 1 lesion having slight and heterogeneous enhancement. Conclusion DNT is accorded with general tumor's biological characteristics. MRI has great value on DNT's diagnosis. If a cystic lesion locates in the hemisphere cortex with a triangle in shape or gyrus-like shape, having no significant mass effect and peripheral edema, it has a great possibility of being DNT.

Objective To evaluate the MRI features of central neurocytoma (CNC). Methods Thirteen patients with CNC (7 males and 6 females, aged 18-28), admitted to our hospital fiom January 2007 to January 2010, were chosen; preoperative plain and contrast enhanced MRI scans were performed on these 13 patients and 1 also received CT scan. The clinical and imaging data and pathological features of these patients were retrospectively analyzed. Results The largest tumor enjoyed its maximum diameter of 3.2-8.5 cm; the CNC in 12 patients located at the lateral ventricle and that in 1 patient at the parenchyma of the left frontal and temporal lobes. Lobulated solid tumors were noted in these lesions,showing T1 isointense and T2 hyperintense in MRI; some multiple, scattered cystic lesions showed stronger T1 and T2 signal than the former ones; vascular "flow void" signal was shown in 6 patients in T2WI, and slightly weak T1 signal was shown in 8. All the tumors demonstrated inhomogeneous enhancement and the tumor vessels in 6 patients were noted under contrast MRI. Focal calcification was found. Conclusion CNC in the lateral ventricle enjoys typical location; considering the age of patients, non-contrast and contrast MRI findings, correct diagnosis of CNC can be made; however, CNC outside the lateral ventricle is hard to diagnose.

This study was purposed to evaluate the clinical and pathological features, prognosis of patients with subcutaneous panniculitis-time T cell lymphoma (SPTCL). The clinicopathologic features, immunophenotypes and treatment of 10 SPTCL patients which confirmed by pathology were analyzed retrospectively. The results showed that the main clinical manifestations of SPTCL were the single or multiple subcutaneous nodules. Of them 8 cases were found with recurrent high fever, weight loss, injury of liver function, bone marrow involvement and pancytopenia. This disease rapidly advanced. Pathologically, atypical large, medium-size and small-lymphocytes rounded the lipocytes look like rosettes. The reactive proliferation of histiocytes accompanied by phagothrocytic phenomena, polynuclear giant cells and granulomatous reaction. The tumor cells infiltrated into the lipolubuls. This lymphoma expressed the cytotoxic T-cell immunophenotype. CHOP regimen was the most common chemotherapy regimen used. 60% patients achieved a good initial response to chemotherapy. 3-year survival was 10%, with median survival time of 10 months. It is concluded that SPTCL is a specific type of lymphoma involving primarily in subcutaneous fatty tissues, most cases of SPTCL display an aggressive course, the disease may progress rapidly and accompanies with unfavorable prognosis. And the prognosis is poor in SPTCL patients with hemophagocytic syndrome. but the allo-HSCT can improve the outcome of this disease.
Adult ; Aged ; Aged, 80 and over ; Female ; Humans ; Lymphoma, T-Cell ; drug therapy ; pathology ; Male ; Middle Aged ; Panniculitis ; drug therapy ; pathology ; Retrospective Studies ; Young Adult