7TD1细胞及其克隆对IL—6的反应性和依赖性

比较了本院基因医学研究所和北京医科大学提供的两株７ＴＤ１细胞。选择北京医科大学提供的细胞株进行克隆，筛选出对ＩＬ－６增殖反应性和依赖性较强的３株细胞（７ＴＤ１ＭＣ１、７ＴＤ１ＭＣ４、７ＴＤ１ＭＣ５）。其中７ＴＤ１ＭＣ５细胞的反应曲线呈典型的“倒Ｓ”形，对ＩＬ－６的反应性和依赖性很好。ＭＴＴ比色法显示了与Ｔ３Ｈ－ＴｄＲ掺入法一致的结果，采用了７ＴＤ１ＭＣ５细胞及ＭＴＴ比色法测定ＩＬ－６生物活性，可减     

重组人白细胞介素-6对照射小鼠早期造血功能恢复的影响

作者报道了国内重组人白介素－６（ｒｈＩＬ－６）对６．５Ｇｙ照射Ｃｓ７ＢＬ／６Ｊ小鼠后１０天造血功能（主要是造血干细胞、粒系和红系祖细胞）恢复的影响．结果表明；ｒｈＩＬ－６对照后早期造血的影响与白细胞介素－６（ＩＬ－６）剂量有关，且作用是双向的．当ＩＬ－６剂量在２００～１０００μｇ·ｋｇ－１·ｄ－１时，脾重和内源性肿结节（ＣＦＵ－Ｓ）数随ＩＬ－６剂量增大而逐渐增加，与对照组相比，ＣＦＵ－Ｓ数的增加统计学意义更明显．与此同时骨髓有核细胞数和ＣＦＵ－ＧＭ产率以及ＣＦＵ－ＧＭ／股骨也明显增加，但１０００μｇ·ｋｇ－１·ｄ－１组的效果反而下降，因此，ｒｈＩＬ－６促进照后早期造血恢复的最佳剂量可能在５００μｇ·ｋｇ－１·ｄ－１左右．当ＩＬ－６剂量为１０μｇ·ｋｇ－１·ｄ－１时，对照射小鼠造血恢复起抑制作用。这些发现对ｒｈＩＬ－６的应用是很有实际意义的．     

电离辐射对小鼠肝脏金属硫蛋白表达的影响

金属硫蛋白（ＭＴ）是一类广泛存在于体内、富含半胱氨酸的低分子量金属结合蛋白,具有重金属解毒、调节机体应激反应及必需微量元素代谢等重要功能。重金属、ＩＮＦ、白介素１（ＩＬ１）、白介素６（ＩＬ６）及化学毒物等多种物质均可诱导ＭＴ合成、并产生交叉抗...     

头低位(-6°)卧床对人细胞免疫功能的影响

目的探讨头低位（－６°）卧床对人淋巴细胞增殖能力和某些细胞因子产生的影响。方法６名健康男性青年头低位（－６°）卧床６ｄ,卧床前１ｄ、３ｄ、６ｄ各采血一次,测定免疫指标。结果卧床３ｄ,α干扰素（ｉｎｔｅｒｆｅｒｏｎα,ＩＦＮα）产生明显降低（Ｐ＜０．０５）,ＮＫ细胞（ｎａｔｕｒａｌｋｉｌｅｒｃｅｌ,ＮＫ）杀伤活性明显增强（Ｐ＜０．０５）,γ干扰素（ｉｎｔｅｒｆｅｒｏｎγ,ＩＦＮγ）的产生和白细胞介素２受体（ｉｎｔｅｒｌｅｕｋｉｎ２ｒｅｃｅｐｔｏｒ,ＩＬ２Ｒ,又称ＣＤ２５）表达功能均呈降低趋势。卧床６ｄ,ＩＦＮα产生和ＮＫ杀伤活性均恢复至卧床前的水平,ＩＦＮγ产生和ＣＤ２５则明显降低（Ｐ＜０．０５）。随着卧床时间的延长,Ｔ淋巴细胞增殖能力和ＩＬ２的产生则逐渐降低,而ＩＬ６的产生则逐渐增加。结论头低位（－６°）卧床对细胞免疫功能有一定的影响。     

白介素6生物活性简易测定法及其临床应用

报道了应用白介素６（ＩＬ－６）依赖细胞株７ＴＤ１，以及ＭＴＴ比色法测定ＩＬ－６生物活性的简便方法。本法测定结果和￣３Ｈ－ＴｄＲ掺入法一致；检测灵敏度为１ｐｇ或１Ｕ／ｍｌ以下；可用于正常人或病人血清中ＩＬ－６水平的测定。采用本法检测了我国正常成人５５例，血清ＩＬ－６活性为６．７５±２．９８Ｕ／ｍｌ；而１１例肺结核排菌者和１２例肺癌患者的血清ＩＬ－６活性分别为１４．２９±８．４６和１７．１４±９．１２Ｕ／ｍｌ，与正常人有显著差别（Ｐ＜０．０１和Ｐ＜０．００１），为进一步临床应用奠定了基础。     

流式细胞仪在小鼠造血干细胞基因转移效率测定中的应用

目的探讨流式细胞仪在造血干细胞基因转移效率测定中的应用价值。方法以干细胞因子（ＳＣＦ）、白细胞介素（ＩＬ）３、ＩＬ６单独或联合作用（ＳＣＦ／ＩＬ３、ＳＣＦ／ＩＬ６、ＩＬ３／ＩＬ６、ＳＣＦ／ＩＬ３／ＩＬ６）后的Ｂａｌｂ／ｃ小鼠造血干细胞作为靶细胞,应用含有绿色荧光蛋白（ＧＦＰ）基因的逆转录病毒载体ＧＣＧＰＸＳＮ介导的基因转移技术实施基因转移,采用ＦＡＣＳ型流式细胞仪测定基因转移效率。结果病毒上清转染的阳性对照组基因转移率为０．０６％,以不同细胞因子作用后基因转移效率提高至００７％～０．２０％,细胞因子作用前后比较,除ＳＣＦ／ＩＬ６组外,差异均有显著或非常显著意义（Ｐ＜００５或Ｐ＜００１）。其中以ＳＣＦ／ＩＬ３组与ＳＣＦ／ＩＬ３／ＩＬ６组的提高最为明显,均达０２０％,与其他各细胞因子组比较,差异也有非常显著意义（Ｐ＜００１）。结论应用流式细胞仪可测定出ＳＣＦ、ＩＬ３、ＩＬ６单独或联合作用对小鼠造血干细胞基因转移效率的不同影响,具有快速、方便、准确的优点。     

外源性重组白细胞介素1受体拮抗剂对大鼠脑创伤的治疗作用

目的观察外源性重组ＩＬ－１受体拮抗剂（ＩＬ－１ｒａ）对实验性脑创伤的治疗作用，以及对脑组织中ＮＴＦα、ＩＬ－６两种炎性细胞因子水平的影响。方法采用液压型脑创伤装置造成大鼠右顶部脑挫伤。治疗组动物分别于脑创伤后１５分钟，２，４，６，８，２４，４８小时左侧侧脑室内注射１０μｇ的ＩＬ－１ｒａ，总剂量为每只７０μｇ。动物于创伤后３天处死，脑组织连续切片染色，计算出创伤体积，通过比较动物创伤灶体积大小观察ＩＬ－１ｒａ的疗效。结果ＩＬ－１ｒａ治疗组创伤体积为（２１．６±５．９）ｍｍ３，对照组为（２９．４±５．７）ｍｍ３，ＩＬ－１ｒａ治疗组脑创伤灶体积明显小于对照组（Ｐ＜０．０５）。另外，创伤后８小时观察，ＩＬ－１ｒａ治疗组创伤侧皮层ＩＬ－６的水平为（２４３．１±３７．８）Ｕ／ｍｇ，对照组为（２９８．８±４９．２）Ｕ／ｍｇ，ＩＬ－１ｒａ治疗组动物脑组织内ＩＬ－６的水平低于对照组（Ｐ＜０．０５）。结论脑室内注射外源性ＩＬ－１ｒａ可有效减轻大鼠脑创伤的损伤程度和范围，ＩＬ－１ｒａ除能拮抗ＩＬ－１的直接作用外，可能还通过影响其他炎性因子（如ＩＬ－６）的生成间接抑制炎性反应，从而对缓解脑创伤后继发炎性损害有十分重要的作用     

重组人白细胞介素—6对照射小鼠早期造血功能恢复的…

作者报道了国内重组人白介素－６（ｒｈＩＬ－６）对６、５Ｇｙ照射Ｃｓ７ＢＬ／６Ｊ小鼠后１０天造血功能（主要是造血干细胞、粒系和红系祖细胞）恢复的影响。结果表明：ｒｈＩＬ－６对照后早期造血的影响与白细胞介素－６（ＩＬ－６）剂量有关，且作用是双向的。当ＩＬ－６剂量在２００～１０００μｇ．ｋｇ＾－１．ｄ＾－１时，脾重和内源性脾结节（ＣＦＵ－Ｓ）数随ＩＬ－６剂量增大而逐渐增加，与对照组相比，ＣＦＵ－Ｓ数的增     

Th1和Th2细胞检测及临床应用

应用ＣＤ４和ＣＤ８单抗可将Ｔ细胞分为两个主要亚群,即ＣＤ４＋细胞及ＣＤ８＋细胞。目前的研究已证明,ＣＤ４＋辅助细胞诱导亚群（ＣＤ４＋Ｔｈ细胞）是一个不均一的亚群,可分为Ｔｈ１和Ｔｈ２。Ｔｈ１细胞主要分泌ＩＬ２、ＴＮＦβ和ＩＦＮｒ,主要介导细胞免疫,Ｔｈ２细胞主要分泌ＩＬ４、５、６,主要介导体液免疫。正常机体Ｔｈ１／Ｔｈ２细胞处于平衡,疾病时这种平衡被破坏。１　Ｔｈ１和Ｔｈ２细胞的基础理论研究１９８６年Ｍｏｓｍａｎｎ等［１］在研究小鼠ＣＤ４Ｔｈ细胞克隆时发现了两种不同的细胞因子模式：Ｔｈ…     

多发性骨髓瘤患者外周血IL—4产生细胞的检测及其意义

本应用碱性磷酸酶抗碱性磷酸酶（ＡＰＡＡＰ）法检测了９例多发性骨髓瘤（ＭＭ）患和１１例健康人外周血ＩＬ－４产生细胞。结果表明：ＭＭ患外周血ＩＬ－４产生细胞（７．６％±２．１％）显少于正常人（１５．３６％±４．１％），（Ｐ＜０．００１），并与患外周血免疫球蛋白水平的减少呈显相关。提示ＩＬ－４产生细胞减少与ＭＭ患免疫球蛋白的分泌抑制有关。     

Knee injury and Osteoarthritis Outcome Score (KOOS) - validation of a Swedish version

The Knee injury and Osteoarthritis Outcome Score (KOOS) is a self-administered instrument measuring outcome after knee injury at impairment, disability, and handicap level in five subscales. Reliability, validity, and responsiveness of a Swedish version was assessed in 142 patients who underwent arthroscopy because of injury to the menisci, anterior cruciate ligament, or cartilage of the knee. The clinimetric properties were found to be good and comparable to the American version of the KOOS. Comparison to the Short Form-36 and the Lysholm knee scoring scale revealed expected correlations and construct validity. Item by item, symptoms and functional limitations were compared between diagnostic groups. High responsiveness was found three months after arthroscopic partial meniscectomy for all subscales but Activities of Daily Living.     

The acutely limping child

Acute limping may be the result of multiple pathologies in children. The differential diagnosis varies based on the age of the child. Irrespective of age, the initial imaging work-up includes AP and frog leg radiographs of the pelvis and ultrasound; MRI may sometimes be helpful. In children less than 3 years, infections and trauma are most frequent. MRI is the imaging modality of choice when osteomyelitis is clinically suspected. Between the ages of 3 and 10 years, transient synovitis of the hip and Legg-Calvé-Perthes disease are main considerations but infection, inflammation and focal bony lesions are also considered. In children over 10 years, slipped capital femoral epiphysis also is considered.     

Do Balance Board Training Programs Reduce the Risk of Ankle Sprains in Athletes?

Introduction Ankle sprains are the most common musculo-skeletal injury that occurs in athletes,particularly in sports that require jumping and landing on one foot such as soccer,and basketball(1-4).These injuries often result in significant time loss from participation,long-term disability,and have a major impact on health care costs and resources(5-8).     

High Intensity Interval Training:New Insights

KEY POINTS ·High-intensity interval training(HIT)is characterized by repeated sessions of relatively brief，intermittent exercise.often performed with an“a11 out”effort or at an intensity close to that which elicits peak oxygen uptake(i.e.，≥90%of VO2 peak).     

Endovascular management of carotid-cavernous fistulas

Objective To investigate endovascular treatment of traumatic direct carotid-cavernous fistulas （CCF） and their complications such as pseudoaneurysms. Methods： Over a five-year period, 22 patients with traumatic direct CCFs were treated endovascularly in our institution. Thirteen patients were treated once with the result of CCF occluded, 8 twice and 1 three times. Treatment modalities included balloon occlusion of the CCF, sacrifice of the ipsilateral internal carotid artery with detachable balloon, coll embolization of the cavernous sinus and secondary pseudoaneurysms, and covered-stem management of the pseudoaneurysms. Results All the direct CCFs were successfully managed endovascularly. Four patients developed a pseudoaneurysm after the occlusion of the CCF with an incidence of pseudoaneurysm formation of 18.2% （4/22）. A total number of 8 patients experienced permanent occlusion of the ICA with a rate of ICA occlusion reaching 36.4% （8/22）. Followed up through telephone consultation from 6 months to 5 years, all did well with no recurrence of CCF symptoms and signs. Conclusion Traumatic direct CCFs can be successfully managed with endovascular means. The pseudoaneurysms secondary to the occlusion of the CCFs can be occluded with stent-assisted coiling and implantation of covered stents.     

Developmental validation of the PowerPlex(®) ESI 16 and PowerPlex(®) ESI 17 Systems: STR multiplexes for the new European standard

In response to the ENFSI and EDNAP groups’ call for new STR multiplexes for Europe, Promega^® developed a suite of four new DNA profiling kits. This paper describes the developmental validation study performed on the PowerPlex^® ESI 16 (European Standard Investigator 16) and the PowerPlex^® ESI 17 Systems. The PowerPlex^® ESI 16 System combines the 11 loci compatible with the UK National DNA Database^®, contained within the AmpFlSTR^® SGM Plus^® PCR Amplification Kit, with five additional loci: D2S441, D10S1248, D22S1045, D1S1656 and D12S391. The multiplex was designed to reduce the amplicon size of the loci found in the AmpFlSTR^® SGM Plus^® kit. This design facilitates increased robustness and amplification success for the loci used in the national DNA databases created in many countries, when analyzing degraded DNA samples. The PowerPlex^® ESI 17 System amplifies the same loci as the PowerPlex^® ESI 16 System, but with the addition of a primer pair for the SE33 locus. Tests were designed to address the developmental validation guidelines issued by the Scientific Working Group on DNA Analysis Methods (SWGDAM), and those of the DNA Advisory Board (DAB). Samples processed include DNA mixtures, PCR reactions spiked with inhibitors, a sensitivity series, and 306 United Kingdom donor samples to determine concordance with data generated with the AmpFlSTR^® SGM Plus^® kit. Allele frequencies from 242 white Caucasian samples collected in the United Kingdom are also presented. The PowerPlex^® ESI 16 and ESI 17 Systems are robust and sensitive tools, suitable for the analysis of forensic DNA samples. Full profiles were routinely observed with 62.5 pg of a fully heterozygous single source DNA template. This high level of sensitivity was found to impact on mixture analyses, where 54–86% of unique minor contributor alleles were routinely observed in a 1:19 mixture ratio. Improved sensitivity combined with the robustness afforded by smaller amplicons has substantially improved the quantity of data obtained from degraded samples, and the improved chemistry confers exceptional tolerance to high levels of laboratory prepared inhibitors.     

Prevalence and severity of hip and groin pain in sub‐elite male football: a cross‐sectional cohort study of 695 players

The purpose of this study was twofold: (a) to investigate the prevalence of hip and groin pain in sub‐elite male adult football in Denmark and (b) to explore the association between prevalence and duration of hip and groin pain in the previous season with the Copenhagen Hip and Groin Outcome Score (HAGOS) in the beginning of the new season. In total 695 respondents from 40 teams (Division 1–4) were included. Players completed in the beginning of the new season (July–Sept 2011) a self‐reported paper questionnaire on hip and/or groin pain during the previous season and HAGOS. In total 49% (95% CI: 45–52%) reported hip and/or groin pain during the previous season. Of these, 31% (95% CI: 26–36%) reported pain for >6 weeks. Players with the longest duration of pain during the previous season had the lowest HAGOS scores, when assessed at the beginning of the new season, P < 0.001. This study documents that half of sub‐elite male adult football players report pain in the hip and/or groin during a football season. The football players with the longest duration of pain in previous season displayed the lowest HAGOS scores in the beginning of the new season.     

Bronchial stump fistula :treatment with covered retrievable hinged metallic stents-preliminary clinical experience

Objective To evaluate the preliminaily clinical efficacy and retrievability of a retrievable hinged covered metallic stent in the treatment of the bronchial stump fistula （BSF）. Methods Between April 2003 and March 2005, 8 patients with bronchial stump fistula after pneumonectomy or lobectomy were treated with two types （A and B） of retrievable hinged covered metallic stents. Type A stent was placed in 6 patients and type B in 2 under fluoroscopic guidance. The stent was removed with a retrieval set when BSF was healed or complications occurred. Results Stent placement in the bronchial tree was technically successful in all patients, without procedure-related complications. Immediate closure of the BSF was achieved in all patients after the procedure. Stents were removed from all patients but one. Removal of the stents was difficult in two patients due to tissue hyperplasia. Patients were followed up for 6 - 21 months. Placement of the stents remained stable in all patients except one due to severe cough. Permanent closure of BSF was achieved in 7 （87.5%） of 8 patients. Conclusion Use of a retrievable hinged covered expandable metallic stent is a simple, safe, and effective procedure for closure of the BSF. Retrieval of the stent seems to be feasible. （J Intervent Radiol, 2007, 16： 253-257）