大鼠胰岛分离纯化和功能分析的研究

目的:探讨大鼠胰岛分离纯化的方案.方法:采用胰管内灌注胶原酶V消化、Histopaque-1077密度梯度离心分离纯化20只雄性SD大鼠胰岛.椎虫蓝染色判断胰岛存活率,双硫腙染色后计数胰岛,葡萄糖刺激胰岛素释放实验评估胰岛功能,同种异体胰岛门静脉移植治疗5只链脲佐菌素诱导的糖尿病大鼠,监测血糖变化.结果:分离纯化后平均胰岛得率为(646±67)个/大鼠,存活率达到90%以上.新鲜分离的胰岛呈椭圆或圆形,悬浮于培养液面,胞膜光滑完整,直径大于150μm的细胞团占95%以上.葡萄糖刺激的胰岛素释放试验结果表明:第1、3、5天胰岛的刺激指数分别为2.6倍、1.7倍和1.4倍,两组间低糖和高糖的胰岛分泌量差异均有显著性(P＜0.05).胰岛门静脉移植术后,第2天大鼠血糖降至11.1 mmol/L,8天内血糖可控制在15 mmol/L以下,随后血糖逐步升高.结论:采用胰管内灌注胶原酶V消化联合Histopaque-1077分离纯化是一种较好的大鼠胰岛分离方法,胰岛得率较高且功能良好.     

不同消化条件对小鼠胰岛分离纯化效果的影响

目的探讨提高小鼠胰岛分离纯化后数量和质量的适宜消化条件。方法通过胆总管逆行灌注胶原酶P溶液进行小鼠胰腺消化,分离胰岛,采用不连续密度梯度Ficoll离心法纯化胰岛,观察胶原酶浓度和消化时间对胰岛分离结果的影响。结果胶原酶浓度和消化时间对小鼠胰岛分离效果有重要影响。在胶原酶P浓度为1.0 mg/ml、37℃消化25 min条件下,胰岛分离效果最佳。结论胶原酶浓度和消化时间影响小鼠胰岛分离结果,优化消化条件可提高胰岛分离数量和质量。     

一种简便分离纯化大鼠胰岛方法的探索

目的　探索可大量获取纯化大鼠胰岛的最佳方法。方法　采用胰管内灌注生理盐溶液 KRBB, 外置胶原酶消化法及用单核细胞分离液Histopaque 1077纯化胰岛。结果　成年Wistar大鼠胰腺消化后能获得 (540±84) 胰岛/胰腺, 纯化后获得 (335±81) 胰岛/胰腺, 纯度可达90%。纯化后的胰岛培养上清液中未检测到胰淀粉酶。胰岛培养1周后, 胰岛素分泌量仍保持较旺盛状态。结论　本方法能获得大量纯度较高且活性好的胰岛, 是一种简便高效的胰岛分离方法。     

大鼠胰岛分离与纯化的实验研究

本实验经胰管注射胶原酶、胰腺静止消化方法。分离成年Wistar大鼠胰岛,葡聚糖密度梯度离心纯化。大鼠胰腺消化后,胰岛收获量为710～1015个/胰腺,纯化后胰岛收获量为610—820个/胰腺,纯度达92%。纯化胰岛形态结构完整,内分泌细胞超微结构保持良好;对葡萄糖刺激反应,胰岛素释放量是基础分泌水平的8倍;异体移植可逆转实验性糖尿病小鼠的高血糖达一周。     

成年猪胰岛的分离和纯化

目的观察胶原酶消化法对成年猪胰岛的分离效果.方法采用胶原酶胰导管注射负荷技术,静止消化与物理消化相结合消化分离成年猪胰腺脾叶;不连续密度梯度比重离心纯化,胰岛素释放试验检测胰岛细胞功能.结果胰岛收获量为8339±2305胰岛数/g胰腺,纯化后胰岛数/g胰腺为4367±1876,纯度为85%,胰岛素释放反应良好.结论采用本方法消化分离成年猪胰岛,胰岛细胞产量、纯度较高,功能良好.     

大鼠胰岛分离及纯化方案的改进

目的优化大鼠胰岛分离纯化条件,为糖尿病胰岛受损的发病机制研究及胰岛再生的应用提供必要材料。方法胆总管原位灌注胶原酶V消化胰腺并分离胰岛后,比较经典不连续密度梯度Ficoll离心法和Histopaque1077密度离心法纯化胰岛的效果,其间观察胰腺灌注液体积及消化时间不同对大鼠胰岛分离纯化的影响,并对纯化后的胰岛进行数量、纯度和功能的体外检测。结果 Histopaque 1077密度离心法比经典不连续密度梯度Ficoll离心法可得到更多优质的胰岛(P<0.01)。两种方法获得的胰岛在高糖刺激下释放胰岛素的能力差异无统计学意义(P>0.05)。胰腺灌注液之体积及消化时间对胰岛提取有十分重要的影响。结论 Histopaque 1077密度离心法简单易行且效率较高,有望成为纯化大鼠胰岛的首选方法,便于临床和基础研究工作的开展。     

NOD 小鼠胰岛的分离及其在体内外的生物学特性

目的 建立分离纯化非肥胖性糖尿病(NOD)小鼠胰岛的方法,并对其体内外生物学特性进行研究?方法 采用改良的胶原酶消化结合Ficoll 密度梯度离心方法,分离纯化NOD 小鼠胰岛?应用体外糖刺激实验检测分离纯化的胰岛功能,以及通过监测移植小鼠的血糖?体重变化及糖耐量实验对移植胰岛的体内生物学功能进行分析,并通过HE 染色和免疫荧光染色检测肾被膜下移植胰岛的存活情况?结果 胰岛产率为(116 ±12)个胰岛/胰腺,纯度>90%?体外糖刺激实验结果显示,NOD 小鼠胰岛的糖刺激胰岛素释放水平明显低于KM 小鼠胰岛?胰岛移植实验显示,移植胰岛能有效改善糖尿病小鼠的血糖?体重和糖耐量,但改善作用一般仅能维持2 周左右?HE 染色和免疫荧光染色结果显示,肾被膜下可见胰岛素阳性的胰岛细胞团,并且在残存的移植胰岛细胞团周围存在大量淋巴细胞浸润?结论 通过改良的小鼠胰岛分离方法可由NOD 小鼠分离得到大量较高纯度的胰岛,可用于今后探索如何阻断自身免疫损伤保护移植胰岛的研究?     

一种简易高效的建立小鼠胰岛移植模型的方法

目的 探索一种简便高效的建立小鼠胰岛移植模型的方法。方法 摘取四只BALB/c小鼠的胰腺,0.25mmPenfine针对胰腺反复多点注射胶原酶P后静止消化20min;采用自制的推进式离心管,以单一密度梯度Ficoll液(1.088g/ml)纯化胰腺消化物,双硫腙对胰岛进行特异性染色,利用胰岛素释放试验检测胰岛细胞的功能;纯化后的胰岛移植到实验性糖尿病C57小鼠的肾包囊下,术后观察其血糖变化。结果 纯化后共得到（789.6±26.4）个胰岛细胞当量（IEQ）,平均纯度为（77.12±3.23）％;胰岛细胞对胰岛素释放刺激反应良好,高糖时胰岛素的释放量为低糖时的2.35倍（P<0.01）。移植后可逆转糖尿病小鼠的高血糖平均达（16.3±2.9d）。结论 提供了快速获取小鼠胰岛细胞的方法,为胰岛移植的实验研究建立了一种简易高效的制作动物模型的方法。     

大鼠胰岛分离纯化实验研究

目的介绍一种大鼠胰岛分离纯化方法。方法SD大鼠和Wistar大鼠共10只,以0.05%Ⅴ型胶原酶胆管灌注,经消化后用葡聚糖(dextran)不连续密度梯度法纯化胰岛。DTZ和AO/PI染色检测纯度及活性。结果胰岛收获量为(930±168)个,Ⅴ型胶原酶灌注及不连续密度梯度法可获得纯度高、活性好胰岛。结论以0.05%的胶原酶胆管灌注消化的方法可得纯度高、活性良好的胰岛。     

大鼠胰岛细胞的分离纯化及培养

目的　探讨大鼠胰岛细胞分离纯化和培养的方法。方法　采用胰导管逆行灌注Hanks液分离成年大鼠胰岛,Ⅴ型胶原酶消化,不连续密度梯度Ficoll 4 0 0纯化胰岛。用台盼蓝和双硫腙染色检测胰岛活性和纯度,葡萄糖刺激胰岛素释放试验检测胰岛功能。结果　胰岛细胞的收获量为5 4 0±15 0个胰岛 胰腺,活性>90 % ,纯度>90 % ,高糖刺激后胰岛素释放量为低糖刺激的2倍多。结论　胰导管灌注Hanks液,Ⅴ型胶原酶消化和不连续密度梯度葡聚糖纯化胰岛,可以获取数量多,活性和纯度好的胰岛     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

Dr.Zhang Ren''''s Experience in the Acupuncture Treatment of Different Diseases with the Same Therapeutic Principle

Dr.Zhang Ren,the chief physician,is the chairman of Shanghai Acupuncture and Moxibustion Association.Having been engaged in medicine for about 40 years,he is experienced in treating various intractable diseases.In his long years of clinical practice,he advocates taking the TCM differentiation as the basis to seek for the acupuncture method for treatment of modern intractable diseases.The author of this essay had the fortune to follow Dr.Zhang in study.The following is a summary of Dr.Zhang's experience in the acupuncture treatment for different intractable diseases with the same therapeutic principle.     

Luo Lingjie''''s Experience in Treating Chronic Nephropathy

In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.     

Acupuncture Combined with Spinal Tui Na for Treatment of Primary Dysmenorrhea in 30 Cases

Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.     

猪肺磷脂注射液联合经鼻持续气道正压通气对呼吸衰竭早产儿的临床疗效及肌酸激酶同工酶活性的影响

目的 探讨猪肺磷脂注射液联合经鼻持续气道正压通气(NCPAP)对呼吸衰竭早产儿的临床疗效及肌酸激酶同工酶活性(CK-MB)的影响.方法 选取呼吸衰竭早产儿80例,分为观察组和对照组各40例.对照组采用NCPAP给氧治疗,观察组给予NCPAP给氧联合猪肺磷脂气管内给药.观察两组患儿治疗前及治疗12h、24 h后PaO2、PaCO2、血氧饱和度(SaO2)、pH的变化情况,检测治疗前及治疗5d后血清CK-MB水平;评估两组患儿的临床治疗效果.结果 两组患儿PaO2、PaCO2、SaO2、pH比较,差异均有统计学意义(P＜0.05),其中观察组治疗后的PaO2、SaO2、pH均高于对照组,PaCO2则低于对照组.两组的PaO2、SaO2、pH均随观察时间延长而升高(P＜0.05),PaCO2均随观察时间的延长而降低(P＜0.05).观察组治疗有效率为87.5％,显著高于对照组的70.0％ (P ＜0.05).治疗5d后两组患儿血清CK-MB水平均较前降低(P＜0.05),且观察组明显低于对照组(P＜0.05).结论 猪肺磷脂注射液气管内给药联合NCPAP可以显著降低呼吸衰竭早产儿CK-MB的含量,提高治疗有效率,起到很好的呼吸循环支持作用.     

Survey and practice of reporting quality of randomized controlled clinical trials on traditional Chinese medicine

Evidence obtained from randomized controlled trials （RCTs） has been generally accepted as the gold standard in the evaluation of clinical effectiveness. Readers need to understand the trial design, implementation, results, analysis and interpretation, so as to fully Jnderstand the results of RCTs. Thus, the investigators of RCTs have to report these items in a complete, accurate and clear manner. Since 1998, we have conducted several evaluations on the reporting quality of RCTs published in Chinese journals on traditional Chinese medicine （TCM） and results have shown that there is an urgent need for higher quality RCTs on TCM.     

TCM Treatment of Ankylosing Spondylitis by Tonifying the Kidney and Strengthening the Governor Vessel

Ankylosing spondylitis is a chronic and progressive disorder with inflammation mainly involving the central axis joints. It mainly affects the cervical spine and the lumbosacral area, with the pathogenesis closely related to the kidney and the Governor Vessel (GV). TCM holds that the syndrome is deficiency in origin and excess in superficiality, which is due to insufficiency of the kidney, deficiency of GV, and blocking of the channels with the invasion of exogenous evil, leading to poor circulation of qi and blood and malnutrition of the bones, muscles and joints. The TCM method of tonifying the kidney and strengthening GV to regulate circulation of qi and blood and check the arthralgia pain should be adopted, with the Kidney-Tonifying and GV Strengthening Decoction (益肾强督汤) prescribed.     

IMPROVING P-gp EXPRESSION IN HUMAN MONONUCLEAR CELLS IN VITRO TRANSFECTED BY MULTIDRUG RESISTANCE-1 mRNA

CHEMOTHERAPY playsa greatrolein the treat- ment of malignanttumors,especiallyingynecolo- gicalones.But inanticancerchemotherapy,leuko-cytopeniaisfrequentlytheprimarydose-limitingsideeffect factor.Moreover,cancersarefrequentlychemoresistantbe-causeof overexpressionof P-glycoprotein(P-gp), which isencodedby multidrugresistancegene (MDR1 ) and detectableinup to50% ofhuman cancersand renderscellsresistancetoanticancerdrugs.The safetyand potentialtherapeuticbenefitof mdr1 gene transferredto h…