中国住院癌症患者自杀意念发生率Meta分析

目的 了解中国住院癌症患者自杀意念发生率的总体情况,为住院癌症患者自杀行为预防及干预提供参考.方法 系统检索Web of Science、Cochrane Library、PubMed、EMbase、中国知网、中国生物医学文献服务系统、万方数据库、维普数据库自建库至2020年10月的相关文献,采用R4.0.2软件对数据进行Meta分析.结果 共纳入文献15篇,总样本量6328例.文献分析结果显示,我国住院癌症患者自杀意念发生率为21.6％[95％CI (15.9％,27.3％)].亚组分析结果显示,女性、使用多条目自杀测评工具、南方地区癌症患者自杀意念发生率较高.结论 我国住院癌症患者自杀意念发生率较高,综合医院应早期识别住院癌症患者的自杀意念,并及时对自杀意念及自杀行为采取预防及干预措施.     

苏州市儿童BMI-Z变化轨迹与青春晚期血压偏高的关联研究

目的 探讨年龄和性别标准化BMI-Z值（BMI-Z）轨迹与青春晚期（16~18岁）血压偏高的关系。方法 基于苏州市儿童和青少年健康监测项目（HPPCA）2012-2019年的数据,以2019年的监测数据为结局,将末次监测年龄为16~18岁且总监测次数≥4的11 812名儿童青少年纳入研究。运用潜变量生长混合模型分析不同性别儿童成长过程中的BMI动态变化（BMI-Z变化轨迹）,采用多因素logistic回归分析BMI动态变化与青春晚期血压偏高的关系。结果 在男、女生中各确定了6条BMI-Z变化轨迹,分别为较瘦组、略瘦组、标准组、下降组、超重组和肥胖组。与标准组相比,男生肥胖组在青春晚期发生血压偏高的风险增加94.0%（OR=1.94,95%CI：1.43~2.63）,而女生肥胖组则增加107.0%（OR=2.07,95%CI：1.33~3.22）。男女生中下降组与青春晚期血压偏高发病均没有显著关联。结论 儿童持续性肥胖会增加青春晚期罹患血压偏高的风险;若对肥胖儿童及时采取干预措施,使其在青春晚期恢复正常体重,或许能降低血压偏高的风险。     

Immune responses to the expressed products of the CSP antige n gene of Plasmodium falciparum southern China isolate FCC1/HN in Hela cell

Objective To construct a eukaryotic expression system with pcDNA3-PfCSP/Hela for the Circ umsporozoite protein (CSP) gene of Plasmodium falciparum (P.falciparum), t o observe the immune responses in BALB/c mice induced by the expressed proteins .Methods The recombinant plasmid pcDNA3-PfCSP was transformed into the Hela cell line. The expressed protein was isolated and analyzed by using SDS-PAGE and used for immunization of BALB/c mice by subcutaneous, intravenous, and intraperitone al adminstration.Enzyme-linked immunosorbent assay(ELISA), Dot-ELISA, Wester n blot, T lymphocyte proliferation test, natural killer cell(NKC) activity assay , and CD4(+) and CD8(+) T cell detection were used for observation of humoral an d cellular immune responses.Results Immune sera strongly reacted with the expressed protein, antibody titer was up to 1∶6400 as detected by ELISA.Western blot analysis revealed a specific b and at 38.3 Kda.When the spleen cells of normal and immunized BALB/c mice we re specifically stimulated with expressed protein, the optical densities were 0 .12±0.03 and 0.34±0.04, respectively.The latter were significantly highe r than the former (P<0.01).We used the MTT colorimetric assay to measure NKC activity of mice spleen.The results showed that the NKC activity of immuni zed BALB/c mice was remarkably higher than that of the controls (P<0.05). CD4(+) and CD8(+) T cells were detected by using monoclonal antibody immunofluor escence methods.The results showed that the percentage of CD4(+) and CD8(+) T cells of immunized group were significantly higher than that of control group ( P<0.05).Conclusions The humoral and cell-mediated immune responses and elevated NKC activity to pr oducts made with a eukaryotic expression system could be specifically detected i n BALB/c mice.These findings indicate that the expressed protein could enhance the immune function in mice.     

氢化可的松对豚鼠离体气管平滑肌收缩活动的影响

目的：研究氢化可的松对豚鼠离体气管平滑肌收缩活动的影响。方法：用组胺和乙酰胆碱引起气管条明显收缩和张力增加。用氢化可的松20-30秒后,观察组胺和乙酰胆碱所引起的气管条收缩活动的改变。结果：用氢化可的松20～30s后,组胺和乙酰胆碱所引起的气管条收缩活动减弱、张力明显降低。结论：氢化可的松可以快速舒张豚鼠气管平滑肌。     

消痔灵和强的松龙混合液治疗鼻息肉

0　引言　我科 1996 / 1998分别应用消痔灵与强的松龙混合液、消痔灵液、强的松龙液行鼻息肉内 ,鼻息肉蒂部注射治疗鼻息肉各 5 0例 ,并设对照组为鼻腔滴入及口服类固醇激素 5 0例 ,合计 2 0 0例 ,观察并对比其疗效 .1　对象和方法1.1　对象　男 12 8例 ,女 72例 ,年龄 8～ 78(平均 38)岁 ,病程 32 a～ 45 (平均 4.5 ) a.其中在本次治疗前做过一次鼻息肉摘除术后复发的 2 7例 ,做过 2次或 2次以上手术的 12例 .主要症状为鼻塞、流脓涕、头痛及嗅觉减退 .全部病例治疗前均行鼻窦 X线拍片 ,其中上颌窦炎 12 5例、筛窦炎 5 8例、蝶窦炎 2例、…     

磷脂对HDL3介导大鼠皮肤成纤维细胞内胆固醇流出能力的影响

目的　研讨磷脂对HDL3 介导大鼠皮肤成纤维细胞内胆固醇流出能力的影响。方法　在卵磷脂 (PC)或鞘磷脂 (SPM )存在条件下 ,观察HDL3 介导细胞胆固醇流出量的变化、细胞内磷脂含量变化及游离胆固醇 /胆固醇酯平衡的变化。结果　①BSA组 (对照组 )、HDL3 组、PC组、SPM组、PC HDL3 组和SPM HDL3 组分别介导 4.70 %、31.5 5 %、7.35 %、8.0 6 %、42 .95 %和 46 .98%细胞胆固醇流出 ;②BSA、HDL3 、HDL3 SPM和HDL3 PC组细胞培育后胞内卵磷脂磷含量 (PC p)和鞘磷脂磷含量 (SPM p)分别为 2 0 .0 2、5 .5 6 ,17.5 6、5 .2 8,18.6 2、7.0 0和 2 2 .5 0、5 .5 2 μg/皿 ;③PC和SPM与细胞培育后 ,胞内游离胆固醇 /总胆固醇比值分别为 49.6 5和 5 9.5 7。培育前此比值为 48.6 4。结论　①PC和SPM本身无介导细胞胆固醇流出能力 ,但它们能显著提高HDL3 介导的细胞胆固醇流出能力 ,且后者强于前者 ;②随着细胞胆固醇流出 ,部分胞内PC也流出胞外 ,而胞内SPM无明显变化 ;③SPM促进细胞内胆固醇酯向游离胆固醇转化。     

论高校科技产业的创新与发展

２１世纪是以信息技术和生物工程技术为代表的高瓣技术及其产业迅猛发展的知识经济世纪,本文主要讨论了在新世纪里高校职能的变化及其在知识创新、技术创新和国家经济建设中的地位、作用等问题。作者认为,坚持创新是高校生存和发展的根本需要;高校科技产业则是具有中国特色的知识经济的产物。对完善我国教育体制、提高办学实力、调整我国的知识结构和产业结构都具有十分重要的意义。     

国产四类新药盐酸格拉司琼注射液与恩丹西酮预防化疗引起的恶心和呕吐的疗效比较

目的 验证国产盐酸格拉司琼注射预防恶性肿瘤患者化疗所致恶心与呕吐的有效性和安全性。方法 对６９例接受以顺铂为主化疗和４０例接受以蒽环类抗肿瘤药为主化疗的恶性肿瘤患者,采用前瞻性多中心随机对照试验,比较国产格拉司琼和国产上市恩丹西酮预防化疗所致恶心与呕吐的疗效和不良反应。结果 格拉司琼和恩丹西酮对预防强致吐和中度致叶化疗药物所致的急性和迟发性恶心与呕吐的疗效基本相同;不良反应变基本相似,以便秘、疲倦     

p53反义RNA对肠癌细胞恶性表型的抑制作用

研究ｐ５３反义ＲＮＡ对大肠癌细胞中突变型ｐ５３致癌性的抑制效应,为肿瘤基因治疗提供新思路。方法２．１ｋｂ的人ｐ５３全长ｃＤＮＡ反向插入哺乳动物表达载体ｐＲＥＰ９,得到ｐ５３反义ＲＮＡ表达载体ｐＲＥＰ９－ｐ５３（ＡＳ）,并将其导入人肠癌细胞株ＳＷ１１１６（内源性突变型ｐ５３）,采用ＭＴＴ和ＦＣＭ方法测定ｐＲＥＰ９－ｐ５３（ＡＳ）表达的ｐ５３反义ＲＮＡ对ＳＷ１１１６细胞生长的影响。结果带有ｐＲＥＰ９－ｐ５３（ＡＳ）的ＳＷ１１１６细胞,与对照组ＳＷ１１１６细胞和带ｐＲＥＰ９空载体的ＳＷ１１１６细胞相比,由于ｐ５３反义ＲＮＡ的表达,其增殖速度显著下降,ＦＣＭ的结果也证明带ｐＲＥＰ９－ｐ５３（ＡＳ）的细胞部分受阻于Ｇ０／１期,而带ｐＲＥＰ９空载体的细胞则无明显变化。结论ｐ５３反义ＲＮＡ可以有效地抑制大肠癌细胞中突变型ｐ５３的致癌性,可用于实验性肿瘤基因治疗研究     

Activation by high potassium of a novel voltage-operated Ca2+ channel in rat spleen

1. High potassium produced a concentration-dependent contraction in rat isolated spleen.
2. The high potassium-induced contraction of rat spleen was abolished in Ca²⁺-free Krebs solution containing 1 mM EGTA, and the subsequent addition of 3 mM Ca²⁺ restored the high potassium-induced contraction to the control level.
3. Nifedipine, verapamil, diltiazem, Cd²⁺, Ni²⁺, Co²⁺, R-(+)-Bay K 8644 and pimozide inhibited and relaxed high potassium-induced contraction of rat spleen with IC₅₀ and EC₅₀ values much higher than those values in rat aorta.
4. In addition, high potassium-stimulated contraction of rat spleen was insensitive to ω-conotoxin GVIA, ω-conotoxin MVIIC and ω-agatoxin IVA.
5. The high potassium-induced contraction of rat spleen was also unaffected by tetrodotoxin (TTX), prazosin, chloroethylclonidine (CEC), yohimbine, propranolol, atropine, diphenhydramine, cimetidine, ketanserin, 3-tropanyl-indole-3-carboxylate, saralasin, indomethacin, nordihydroguaiaretic acid, GR32191B, domperidone, naloxone, chlorpromazine, suramin, (±)-2-amino-5-phosphonopentanoic acid, 6,7-dinitroquinoxaline-2,3-dione (DNQX), L-659,877, L-703,606, lorglumide, PD 135,158 N-methyl-D-glucamine, benextramine, amiloride, dantrolene, TMB-8, econazole, staurosporine and neomycin.
6. Forskolin and sodium nitroprusside relaxed high potassium-induced contraction of rat spleen with EC₅₀ values of 0.55±0.04 and 20.0±2.7 μM, respectively.
7. It is concluded that high potassium may activate a novel, pharmacologically uncharacterized voltage-operated Ca²⁺ channel in rat spleen.