失血性休克小鼠液体复苏后髓源性抑制细胞的分布和分化（英文）

目的:在失血性休克小鼠模型中使用不同的液体复苏,包括等渗盐水(NS)、高渗盐水(HTS)和羟乙基淀粉(HES),比较在不同时间点髓源性抑制细胞(MDSCs)在外周血、脾脏和骨髓组织中分布和分化的情况。创新点:(1)创建失血性休克小鼠模型;(2)将MDSCs引入失血性休克液体复苏后免疫变化的研究中;(3)对骨髓、脾脏和外周血细胞中的MDSCs分布进行研究,并探讨了在失血性休克不同液体复苏后MDSCs的分化趋势,为临床上形成规范的救治方案提供了科学的实践资料。方法:将BALB/c雄性小鼠随机分成四组,除对照组外,其余三组在建立失血性休克小鼠模型后采用不同的液体复苏:NS组、HTS组和HES组。在模型建立后的2、24和72 h分批次处死小鼠,取外周血、脾脏和骨髓细胞组织,通过三色荧光标记流式细胞术进一步分析MDSC细胞含量,以及其两亚组单核髓源性抑制细胞(M-MDSC)和中性粒髓源性抑制细胞(G-MDSC)的比值。结论:HTS可诱导MDSCs在外周血和脾脏中的早期积累,并影响MDSCs分化和分布;而HES对MDSCs的分布影响较小,但对MDSCs在骨髓中的分化影响较大。     

肺癌小鼠MDSC和T细胞变化

目的：探讨肺癌小鼠CD4＋T细胞、CD8＋T细胞和骨髓源性抑制细胞（ MDSC）的比例和数量变化。方法：采用LLC细胞皮下接种制备小鼠肺癌肿瘤模型,流式细胞仪检测肿瘤小鼠骨髓、脾脏、淋巴结内CD4＋T细胞、CD8＋T细胞和MDSC的数量变化。结果：与正常对照小鼠相比,肿瘤小鼠脾脏、淋巴结内CD4＋T细胞、CD8＋T细胞的比例和数量显著降低,骨髓CD4＋T细胞变化不明显,但CD8＋T细胞显著减少。 MDSC 在肿瘤小鼠骨髓、脾脏和淋巴结内的比例和数量则显著增加。结论：肺癌小鼠T细胞数量降低而MDSC细胞数量增加,诱导对肿瘤细胞的免疫耐受。     

微囊化大鼠胰岛与睾丸Sertoli细胞联合移植实验研究

目的：应用细胞微囊化方法、病理技术研究微囊化大鼠胰岛细胞与睾丸Sertoli细胞联合移植对糖尿病小鼠血糖的影响及Sertoli细胞对共移植的胰岛细胞的免疫豁免作用。方法：将30只小鼠随机分为2组,每组15只。第一组为胰岛细胞微囊化移植组,第二组为胰岛细胞与睾丸Sertoli细胞联合微囊化移植组,建立糖尿病模型后,两组均采用腹腔注射的方法将微囊植入糖尿病小鼠体内,术后两组均不使用免疫抑制剂,定期检测小鼠的血糖情况,比较两组之间胰岛细胞有功能存活时间的不同以及微囊的病理学改变。结果：胰岛细胞与睾丸Sertoli细胞联合微囊化移植组与胰岛细胞微囊化移植组相比,联合移植组胰岛细胞存活时间长于单纯移植组（P〈0．05）,囊周淋巴细胞侵润程度轻于单纯胰岛细胞移植组。结论：睾丸Sertoli细胞对共移植的胰岛细胞具有免疫豁免作用,可以延长胰岛细胞有功能存活时间,减轻排斥反应,降低囊周淋巴细胞侵润程度。     

丙酸睾丸酮治疗钒致雄性小鼠生殖机能障碍的实验研究

雄性小鼠分别经腹腔注射3．00mg·Kg－1的偏钒酸钠。染毒六周后每组随机取5只小鼠进行造模检查,此后,治疗组每日经皮下注射丙酸睾丸酮1．6mg·Kg－1。连续给药五周后取材、分别进行附睾精液分析,睾丸组织学检查,睾丸钒含量测定及血浆TSH与睾酮测定。结果表明,治疗组精子数量、精子存活率、各级生精细胞、曲细精管直径、睾酮含量都高于模型组。但睾丸机含量明显低于模型组。提示,丙酸睾丸酮对钒引起的雄性小鼠生范机能障碍有显著的治疗效果。     

纳洛酮对急性酒精中毒小鼠T-AOC的影响

为探讨纳洛酮对急性酒精中毒小鼠总抗氧化能力T—AOC的影响。将小鼠分为空白组、急性酒精中毒小鼠模型组和解救组,解救组对急性酒精中毒小鼠注射酸纳络酮注射液。处理结束后,摘眼球取血,分离血浆,测血清中T—AOC活力。结果酒精中毒小鼠血清T—AOC活力降低,纳洛酮解救后T—AOC的活力升高显著（α=0．05）,但仍未能回复到中毒之前的水平。结果表明,纳洛酮在恢复酒精中毒小鼠机体抗氧化能力方面有一定的效果,但未能大幅度扭转机体抗氧化能力降低的趋势。     

虫草多糖对变性血红蛋白诱发的急性肾衰的防治作用研究

目的探讨虫草多糖对大鼠静脉注射变性血蛋白诱发的急性肾衰的防治作用。方法将实验动物分为正常组,模型组,虫草多糖高、中、低三个剂量组和阳性组,观察治疗后大鼠的肾功能、血液生化指标、肾病理及肾脏指数的变化。结果虫草多糖组肾功能受损程度明显轻于模型组（P〈0．01）,肾脏病理损伤明显减轻,虫草多糖组与模型组比较肾脏指数有极显著差异（P〈0．01）。结论虫草多糖能够防治变性血蛋白诱发的急性肾功能衰竭,其机理可能与改善肾功能、纠正代谢紊乱、促进肾小管的修复与再生等作用有关。     

急性铅中毒对小鼠睾丸病理损伤研究

为了研究急性铅中毒对小鼠睾丸病理变化的影响,通过对小鼠饲喂含有醋酸铅的去离子水建立铅负荷小鼠模型.处理10 d后取材,分析体质量、睾丸指数和睾丸病理剖检变化.结果显示：与对照组相比,铅中毒组小鼠体质量无明显变化,睾丸指数降低,且差异显著（P＜0.05）;小鼠睾丸中支持细胞、生精细胞和间质细胞数量减少.铅对小鼠睾丸具有显著损害作用,从而影响小鼠的生殖健康.     

纳洛酮对急性酒精中毒小鼠T—AOC的影响

为探讨纳洛酮对急性酒精中毒小鼠总抗氧化能力T—AOC的影响。将小鼠分为空白组、急性酒精中毒小鼠模型组和解救组,解救组对急性酒精中毒小鼠注射酸纳络酮注射液。处理结束后,摘眼球取血,分离血浆,测血清中T—AOC活力。结果酒精中毒小鼠血清T—AOC活力降低,纳洛酮解救后T—AOC的活力升高显著（α=0．05）,但仍未能回复到中毒之前的水平。结果表明,纳洛酮在恢复酒精中毒小鼠机体抗氧化能力方面有一定的效果,但未能大幅度扭转机体抗氧化能力降低的趋势。     

乌索酸对D-氨基半乳糖致小鼠急性肝损伤的影响

目的：研究乌索酸抗急性肝损伤的作用．方法：利用D-氨基半乳糖（D-GalN）建立小鼠急性肝损伤病理模型，分别以乌索酸按15、30、60mg／kg小鼠口服给药，观察其对急性肝损伤小鼠血清丙氨酸氨基转移酶（ALT）、天门冬氨酸氨基转移酶（AST）、肝组织丙二醛（MDA）含量及肝脏形态学的影响．结果：急性肝损伤模型组与正常对照组比较，各项指标差异均有显著性（P〈0．01）；乌索酸组与模型组比较，血清ALT、AST、MDA明显降低（P〈0．05），光镜下肝细胞脂肪变性、水样变性明显减轻；结论：乌索酸对D—GalN所致的急性肝损伤小鼠具有保护作用．     

油橄榄叶提取物对铅中毒小鼠骨髓NO和NOS的影响

目的探讨油橄榄叶提取物(OLE)对铅中毒小鼠骨髓NO含量和NOS活性的影响。方法选健康小鼠,每日灌胃醋酸铅溶液的同时灌胃不同剂量的OLE进行治疗,连续用药30 d,检测血铅含量、骨髓一氧化氮(NO)含量及一氧化氮合酶(NOS)活性的变化。结果与模型对照组相比,小鼠灌胃OLE后血铅水平下降,骨髓NO含量及NOS活性明显降低。结论 OLE对铅中毒小鼠有一定的疗效,能改善骨髓生化指标,拮抗铅对骨髓的毒性。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

库克斯顿城堡

城堡, 是欧洲典型的建筑之一, 每个城堡都有一个美丽的传说或是一段历史。从本期开始, 我们将推出“城堡之旅”, 带各位读者去浏览、观赏欧洲各地的城堡, 开始一段文化与历史的旅途!     

The Reader Response Approach to Teaching of English Literature

During interview with English majors, it was found that a majority of students expressed disappointment with their experience of English literature classes. Students' dislike of learning English literature appears to be the major problem of teaching English literature in China. Reader response approach is a good way to solve this problem. In this paper, I explain the rationale behind the reader response approach, such as its origin, definition, features, assumptions, and strategies. Then I illustrate how reader response approach works as a teaching strategy by presenting several teaching models. At last I evaluate its usefuiness for teachers and present the advantages of reader response approach in Chinese context.