ObjectiveTo investigate the effects of somatostatin8 (SS8) on the apoptosis and the expression of cmyc protein of hepatocellular carcinoma cell SMMC7721. MethodsCultured in vitro, hepatocellular carcinoma cells SMMC7721 were incubated with SS8 (10 μg/ml). The apoptosis rate and expression of cmyc protein were detected by flow cytometry (FCM). ResultsSS8 can cause the spanonumber in S and G2/M phase and the auxonumber in G0/G1 phase of SMMC7721 cells . The apoptosis rate was 14.2% in the study group and 6.1% in the control group, and there was significant difference (P＜0.05); The level of expressions of cmyc protein was 0.833±0.035 after action by SS8 for 24 h. Compared with control group, there was no significant difference in the study group（P＞0.10）.But after the cells were incubated with SS8 for 48，72，96，120，144 h, the level of expressions of cmyc protein was 0.818±0.04，0.721±0.029，0.669±0.026，0.648±0.045，0.642±0.028 respectively in the study group, and there was significant difference as compared with the control group (P＜0.05). Conclusion The SS8 can induce the apoptosis and lower expression of cmyc protein of hepatocellular carcinoma cell SMMC7721.
Objective To review the efficacy and safety of interventions for preventing infections in nephrotic syndrome using evidence-based principles for clinicians to practice easily. Methods We searched Cochrane controlled trials register database, MEDLINE, EMBASE and Chinese Biologic Medical database. Results Total 11 articles were obtained including RCTs, non-controlled clinical studies and traditional narrative reviews. No systematic review or meta-analysis was identified. Prophylactic interventions for reducing risks of infection in nephrotic syndrome included intravenous immunoglobulin, thymosin, traditional Chinese herb, lamivudine, pneumococcal vaccination and chemoprophylaxis. Conclusion At present, the studies about interventions for preventing infection in nephrotic syndrome were limited in quantity and poor in the quality of methodology, therefore, the promising conclusions were unavailable. Rigid randomized placebo-controlled clinical trials with blinding or systematic review or meta-analysis would be very necessary for further assessing the efficacy and safety of the prophylactic interventions for preventing infections in nephrotic syndrome
【摘要】 目的 探討生理鈣透析液對持續性不臥床腹膜透析（CAPD）患者鈣磷代謝的影響。 方法 回顧性分析2008年1月-2009年12月腹膜透析患者的鈣磷指標，資料齊全的患者中使用鈣濃度為1.25 mmol/L的腹膜透析液（生理鈣組）的患者有30例，使用鈣濃度為1.75 mmol/L的透析液（標準鈣組）患者30例。對兩組患者鈣磷代謝指標進行比較。 結果 治療前后兩組的血磷、鈣磷乘積和全段甲狀旁腺素差異均無統計學意義（Pgt;0.05）；治療后標準鈣組血鈣較前升高，差異有統計學意義（Plt;0.05），而生理鈣組治療前后血鈣差異無統計學意義（Pgt;0.05）。 結論 不同含鈣濃度腹膜透析液對機體鈣磷代謝的影響是不同的，在高鈣、高磷、低轉運骨病的腹膜透析患者中使用鈣濃度為1.25 mmol/L的生理鈣透析液減輕了鈣負荷，為臨床醫生使用含鈣磷結合劑提供了治療空間。【Abstract】 Objective To investigate the effects of physiological calcium dialysate on the calcium and phosphorus metabolism in patients undergoing continuous ambulatory peritoneal dialysis (CAPD). Methods We retrospectively analyzed the clinical data of 60 patients having undergone CAPD in West China Hospital of Sichuan University between January 2008 and December 2009. The patients were divided into two groups with 30 in each by calcium concentration of the dialysate: the physiological calcium dialysate group (1.25 mmol/L) and the standard calcium dialysate group (1.75 mmol/L). The metabolism indexes of calcium and phosphorus for the two group of patients were compared. Results Levels of Serum phosphate, calcium-phosphate product and immoreactive parathyroid hormone (iPTH) of all the patients in both groups before and after treatment showed no significant differences (Pgt;0.05). Serum calcium increased significantly in patients treated with standard calcium dialysate (Plt;0.05), while it did not change significantly in patients treated with physiological calcium dialysate (Pgt;0.05). Conclusions Dialysate with different concentrations of calcium provides different influence on the metabolism of calcium and phosphorus. Changing calcium concentration to 1.25 mmol/L in the dialysate can lower the calcium load for patients with hypercalcium and/or hyperphosphate with low bone turnover, providing treatment space for clinical doctors to use binders containing both calcium and phosphorus.
目的 增加對治療相關性繼發白血病的認識。 方法 報道非霍奇金淋巴瘤治療后2年繼發急性髓細胞白血病M6型1例，結合文獻討論治療相關性白血病的發病機制、治療、預后。 結果 1例73歲非霍奇金淋巴瘤患者接受R（Rituxmab，利妥昔單抗）－CHOP環磷酰胺+多柔比星+長春新堿+潑尼松方案規律化學治療。治療結束24+個月后，經骨髓涂片及細胞免疫分型診斷為急性髓細胞白血病M6型，染色體檢查為：44～48，XY，del（5）（q12q33），-8，-10，der（12）t（4；12）（q11-q12；p13），其一般情況急劇惡化并死亡。 結論 治療相關性白血病的發生可能與烷化劑等化療藥物使用和免疫受損等有關，利妥昔單抗導致第二腫瘤的發生暫時不能除外。治療相關性白血病常伴有復雜染色體核型，其病情發展迅速，治療效果差，生存期明顯縮短。Objective To improve the understanding of secondary therapy-related leukemia. Methods The clinical data of one patient with non-Hodgkin lymphoma which transformed into acute myeloid leukemia M6 2 years after chemotherapy were studied. We discussed the pathogenesis, treatment and prognosis of therapy-related leukemia with literature review. Results A 73-year-old patient diagnosed to have non-Hodgkin’s lymphoma accepted R-CHOP chemotherapy.Two years after the treatment, the disease finally developed into acute myeloid leukemia M6 confirmed by cytogenetics, bone marrow morphology and flowcytometry analysis. The chromosome analysis demonstrated complex karyotypes as 44-48, XY, del (5) (q12q33), -8, -10, der (12) t (4; 12) (q11-q12; p13). His general status deteriorated rapidly and soon after the patient died. Conclusions Occurrence of therapy-related leukemia may be due to the administration of alkylating agents, topoisomerase inhibitors and damage of immune function. Therapy-related leukemia often occurs with complex karyotypes and progresses rapidly with poor treatment response.
Based on the site visit on the current application and practice of evidence-based medicine in USA, we find the difference between China and USA so as to further promote and plan the development of evidence-based medicine in China.
Diagnosis of Parkinson’s disease (PD) based on speech data has been proved to be an effective way in recent years. However, current researches just care about the feature extraction and classifier design, and do not consider the instance selection. Former research by authors showed that the instance selection can lead to improvement on classification accuracy. However, no attention is paid on the relationship between speech sample and feature until now. Therefore, a new diagnosis algorithm of PD is proposed in this paper by simultaneously selecting speech sample and feature based on relevant feature weighting algorithm and multiple kernel method, so as to find their synergy effects, thereby improving classification accuracy. Experimental results showed that this proposed algorithm obtained apparent improvement on classification accuracy. It can obtain mean classification accuracy of 82.5%, which was 30.5% higher than the relevant algorithm. Besides, the proposed algorithm detected the synergy effects of speech sample and feature, which is valuable for speech marker extraction.
Methods for achieving diagnosis of Parkinson’s disease (PD) based on speech data mining have been proven effective in recent years. However, due to factors such as the degree of disease of the data collection subjects and the collection equipment and environment, there are different categories of sample aliasing in the sample space of the acquired data set. Samples in the aliased area are difficult to be identified effectively, which seriously affects the classification accuracy of the algorithm. In order to solve this problem, a partition bagging ensemble learning is proposed in this article, which measures the aliasing degree of the sample by designing the the ratio of sample centroid distance metrics and divides the training set into multiple subsets. And then the method of transfer training of misclassified samples is used to adjust the results of subset partitioning. Finally, the optimized weights of each sub-classifier are used to integrate the test results. The experimental results show that the classification accuracy of the proposed method is significantly improved on two public datasets and the increasement of mean accuracy is up to 25.44%. This method not only effectively improves the classification accuracy of PD speech dataset, but also increases the sample utilization rate, providing a new idea for the diagnosis of PD.
