二重滤过血浆置换治疗难治性高脂血症

目的　了解单次二重滤过血浆置换治疗非家族性、难治性高脂血症的短期疗效。方法　 2 0例非家族性高脂血症患者接受二重滤过血浆置换疗法 ,其中 14例患者治疗前血浆总胆固醇 (TC)大于6 .8mmol/L或甘油三脂 (TG)大于 2mmol/L ,低密度脂蛋白 (LDL)水平均高于 3.1mmol/L。取治疗前和治疗结束时的血样 ,分别测量血浆TC、TG、LDL、Apo(A)、Apo(B)、Lp(a)、HDL和纤维蛋白原水平。　结果11例患者具有完整的记录 ,其平均年龄 (4 5 .2 5± 8.33) (2 6～ 5 9)岁 ;平均病程为 6 .7年。单次治疗总置换量为 (4 183± 6 6 7) (30 0 0～ 5 0 0 0 )ml,治疗前后TC、TG、LDL、Apo(A)、Apo(B)、Lp(a)、HDL和纤维蛋白原水平分别为 (6 .86± 1.17)mmol/Lvs (3.4 2± 0 .6 3)mmol/L、(3.92± 2 .13)mmol/Lvs (3.5 7± 1.82 )mmol/L、(4 .0 3± 0 .86 )mmol/Lvs (1.13± 0 .6 6 )mmol/L、(1.34± 0 .37)g/Lvs (0 .85± 0 .30 )g/L、(1.34± 0 .5 7)g/Lvs (0 .70± 0 .34)g/L、(176 .14± 75 .5 3)mg/Lvs (98.4 3± 4 4 .0 8)mg/L、(1.0 3± 0 .2 8)mmol/Lvs (0 .6 8±0 .2 2 )mmol/L、(2 6 3.6± 86 .4 9)mg/dlvs (15 4 .88± 4 4 .12 )mg/dl。TC平均下降 5 1% ;LDL下降约 72 % ;Apo(a)和Apo(b)分别下降 32 %和 4 4 %左右。Lp(a     

调脂治疗对老年心绞痛冠脉血流储备的影响

目的 :研究普伐他汀治疗对临床有心绞痛症状而冠状动脉造影轻度狭窄伴高胆固醇血症老年患者冠脉血流储备 (CFR)的影响。方法 :用彩色多普勒超声仪检测 18例冠心病心绞痛冠状动脉造影轻度狭窄伴高胆固醇血症老年患者 ,采用普伐他汀调脂治疗 6个月后进行治疗前后CFR比较 ,并与 2 0例健康老年血浆胆固醇正常者 (对照组 )比较。结果 :18例患者经过 6个月治疗后 ,血浆总胆固醇 (TC)由 6 84± 0 85mmol/L降至 5 2 9± 0 82mmol/L(P <0 .0 0 1) ,低密度脂蛋白胆固醇 (LDL C)由 4 2 2± 0 73mmol/L降至 3 4 3± 0 82mmol/L(P <0 .0 0 1) ,CFR由治疗前 3 33± 0 71mmol/L升至 3 86± 0 83mmol/L(P <0 .0 1)。TC及LDL C与CFR呈负相关关系 (r =- 0 4 3及- 0 4 6 ,P <0 .0 5 )。结论 :普伐他汀调脂治疗可以改善心绞痛冠状动脉轻度狭窄患者的冠状动脉微循环 ,提高CFR。     

我国冠心病患者的血脂异常特点

目的　了解我国冠心病患者的血脂异常特点。方法　采用病例对照研究方法 ,调查 555例怀疑冠心病患者 (其中经冠状动脉造影确诊的冠心病患者 348例 ,非冠心病 2 0 7例 )的血脂异常情况 ,用标准方法检测血脂水平。结果　冠心病患者中高胆固醇血症发生率明显高于非冠心病患者 (2 2 .49%vs 1 6 .43 % ,P =0 .0 4 5) ,而其他脂质异常的发生率两组差别无统计学意义 ;冠心病组的总胆固醇、低密度脂蛋白胆固醇及脂蛋白 (a)水平显著高于非冠心病组[(4.96± 1 .1 6)mmol/Lvs (4.74± 1 .1 6)mmol/L ,P =0 .0 2 9;(3 .0 4± 1 .0 1 )mmol/Lvs (2 .74± 0 .93)mmol/L ,P =0 .0 0 1 ;(2 2 5 .6± 2 1 5 .1 )mg/Lvs (1 78.1± 1 4 9.3)mg/L ,P =0 .0 0 9] ,而高密度脂蛋白胆固醇则显著低于非冠心病组[(1 .0 3± 0 .35)mmol/Lvs (1 .1 2± 0 .39)mmol/L ,P =0 .0 1 1 ]。结论　我国冠心病患者的血脂异常仍以高胆固醇血症为主     

冠心病、Ⅱ型糖尿病及肾透析患者OX-LDL和AOC分析

目的 :通过对冠心病、Ⅱ型糖尿病及肾透析后患者血清甘油三酯、胆固醇、高密度脂蛋白胆固醇、低密度脂蛋白胆固醇、氧化型低密度脂蛋白胆固醇、载脂蛋白及血液抗氧化状态的分析 ,探讨它们在动脉粥样硬化发生过程中的作用 ,以及氧化型低密度脂蛋白与血液抗氧化状态的关系 ,寻找评价冠心病危险性有效的血液生化指标。方法 :收集经临床确诊的冠心病患者、Ⅱ型糖尿病及肾透析患者各 5 0例及 5 0例无心血管疾病、糖尿病及肾病人群的空腹血清。进行血脂及血液抗氧化状态分析。结果 :冠心病组TG (1 39± 0 34)mmol/L、Chol (4 5 8± 0 92 )mmol/L、HDL -C (1 2 6± 0 36 )mmol/L、LDL -C (2 6 4± 0 4 6 )mmol/L、ApoA1(1 5 9± 0 37)g/L、ApoB10 0 (0 87± 0 2 7)g/L、OX -LDL (0 133± 0 0 3)nmol/L、AOC (14 1± 1 32 )U/ml;Ⅱ型糖尿病组TG (1 4 8± 0 5 1)mmol/L、Chol (4 5 7± 1 10 )mmol/L、HDL -C (1 4 2± 0 4 4 )mmol/L、LDL -C (2 6 9± 0 83)mmol/L、ApoA1(1 6 5± 0 4 7)g/L、ApoB10 0 (0 84± 0 2 1)g/L、OX -LDL (0 12 9± 0 0 2 )nmol/L、AOC (12 8± 2 4 8)U/ml;肾透析后组TG (1 5 5± 0 5 8)mmol/L、Chol (4 6 2± 0 5 8)mmol/L、HDL -C (1 2 7± 0 5 0 )mmol/L     

脂蛋白(a)与血脂指标对冠心病诊断价值的比较和评价

目的　评价脂蛋白 (a)及其联合其他血脂指标对冠心病的诊断价值。方法　分析 6 38例怀疑冠心病患者 (其中经冠状动脉造影确诊的冠心病 4 10例 ,非冠心病 2 2 8例 )的临床资料 ,用标准方法检测血脂水平 ,比较各个血脂指标的诊断价值。结果　冠心病患者的血清总胆固醇 [(5 .0± 1.2 )mmol/L]、低密度脂蛋白胆固醇 [(LDL C) (3.0± 1.0 ) ]mmol/L、脂蛋白 (a) [(2 6 0± 2 2 6 )mg/L]水平及总胆固醇与高密度脂蛋白胆固醇 (HDL C)的比值 (5 .2± 2 .0 )显著高于非冠心病患者 [(4 .6± 1.1)mmol/L ,(2 .6± 0 .9)mmol/L ,(192± 174 )mg/L ,4 .5± 1.5 ,P≤ 0 .0 0 1],HDL C水平 [(1.0± 0 .3)mmol/L]明显低于非冠心病患者 [(1.1± 0 .3)mmol/L ,P =0 .0 4 5 ],而两组间其他血脂水平差异无统计学意义。冠心病患者中 ,血清总胆固醇、LDL C、脂蛋白 (a)及总胆固醇与HDL C比值的异常率显著高于非冠心病患者 ,其他血脂指标的异常率在两组无明显差别。脂蛋白 (a)对冠心病的预测值及似然比并不优于其他血脂指标 ,联合LDL C可提高阳性预测值及似然比。在logstic多元回归中 ,冠心病的危险性与传统的危险因素均呈正相关 ,脂蛋白 (a)与冠心病的相关性不优于其他指标。结论　脂蛋白p(a)对冠心病的预测价值并不优于其他血     

电泳法测定血清各种脂蛋白胆固醇

目的　采用琼脂糖凝胶电泳分离脂蛋白 ,结合胆固醇酶染色同时测定血清脂蛋白HDL C、LDL C、VLDL C和Lp(a) C。方法　运用HelenaREP全自动快速电泳系统分离血清HDL、LDL、VLDL和Lp(a) ,经胆固醇酶染色同时扫描测定HDL C、LDL C、VLDL C和Lp(a) C的百分比 ,输入血清TC ,计算各脂蛋白中胆固醇含量。结果　本法HDL C、LDL C、VLDL C批内CV分别为3 88%～ 5 96 %、1 36 %～ 3 2 5 %、5 19%～ 6 6 8% ,批间CV分别为 4 33 %～ 6 6 8%、2 98%～ 4 37%、8 15 %～ 11 8% ;灵敏度为每条带胆固醇 0 11mmol/L ,检测线性为TC 1 2 6～ 10 36mmol/L ;平均回收率HDL C、LDL C、VLDL C分别为 86 8%、93 5 %、94 2 % ;胆红素 <342 μmol/L、血红蛋白 <3 5g/L、Trig <11mmol/L对结果无显著影响 ;当Trig <2 2 6mmol/L ,HDL C、LDL C电泳法与直接法相关性良好 (r分别为 0 99、0 97)。结论　电泳法可同时测定血清各脂蛋白胆固醇含量 ,当Trig <2 2 6mmol/L与直接法有良好的相关性。该法简便经济快速 ,能精密准确定量各脂蛋白中胆固醇含量 ,尤其适用于对高脂血症的常规检查和研究。     

脂蛋白脂酶多态性对郑州地区汉族糖尿病合并冠心病发病的影响

目的　探讨脂蛋白脂酶 (lipoproteinlipase ,LPL )对 2型糖尿病和糖尿病合并冠心病发病的影响。方法　测定 2型糖尿病 (10 5例 )和糖尿病合并冠心病 (10 8例 )患者和对照组 (10 1例 )外周血白细胞LPL内含子 6的PvuⅡ和内含子 8的HindⅢ多态性 ,以及血清胆固醇 (TC)、甘油三酯 (TG)、高密度脂蛋白胆固醇 (HDL C)等水平。结果　①LPL基因PvuⅡ的等位基因P +和P -频率对照组分别为 0 .6 9与 0 .31,2型糖尿病组为 0 .6 3和 0 .37,糖尿病合并冠心病组为 0 .5 9与 0 .4 1,3组相比其差异无统计学意义。HindⅢ等位基因H +和H -频率对照组分别为 0 .6 8和 0 .32 ,2型糖尿病组为 0 .6 7和 0 .33,糖尿病合并冠心病组为 0 .6 8与 0 .32 ,3组间的差异无统计学意义。② 2型糖尿病LPL基因PvuⅡ基因表型P - /P -患者血清TG [(1.5± 0 .5 )mmol/L]、TC [(5 .0± 1.2 )mmol/L]、LDL C [((3.8±0 .9)mmol/L]及糖尿病合并冠心病P - /P -患者的TG[(2 .1± 1.1)mmol/L]、TC[(5 .3± 1.9)mmol/L]和LDL C[(4 .0± 1.9)mmol/L]的水平均低于同组内非P - /P -表型 (P <0 .0 5 ) ,而P - /P -表型 2型糖尿病患者HDL C[(1.0± 0 .4 )mmol/L]水平则高于同组非P - /P -表型患者 (P <0 .0 5 )。 3组中HindⅢ基因型H - /H -患者血清TG、TC     

冠心病血清总胆红素与氧化修饰低密度脂蛋白的关系研究

目的　探讨冠心病血清总胆红素与氧化修饰低密度脂蛋白 (OX LDL)之间的关系。方法　用日立 7170A生化分析仪氧化酶法检测血清总胆红素 ;用酶联免疫吸附试验双抗体夹心法检测OX LDL。结果　冠心病组血清总胆红素为 (9 3 1± 3 85) μmol/L ,血浆OX LDL为 (73 63±2 1 62 )mmol/L ,直线相关分析 ,两者呈显著负相关 ,相关系数r =-0 52 8,P <0 0 1;健康组血清总胆红素为 (12 86± 5 16) μmol/L ,血浆OX LDL为 (3 6 58± 2 4 82 )mmol/L ,相关系数r =-0 12 9,两者无明显相关性 (P >0 0 5)。结论　在冠心病中血清胆红素参与抗低密度脂蛋白氧化的作用 ,从而抑制了OX LDL的形成     

尿毒症非透析患者的微炎症状态及对脂蛋白(a)的影响

目的　通过测定尿毒症非透析患者慢性炎症指标并分析其与脂蛋白 (a) [Lp(a) ]的关系 ,探讨非透析的尿毒症患者微炎症状态及其影响心血管系统的途径。方法　测定 5 5例尿毒症患者慢性炎症指标血C 反应蛋白(CRP)、白细胞介素 6 (IL 6 )、肿瘤坏死因子α(TNF α)及Lp(a) ,分析它们之间的关系 ,并与 30例正常人比较。结果　尿毒症组血CRP、IL 6、TNF α及Lp(a)分别为 (4 .0 6± 4 .0 2 )mg/L、(10 8.3± 88.3)ng/L、(1.4 1± 0 .5 3) μg/L和 (5 5 0± 4 31)mg/L ,均高于对照组 ,其中CRP、TNF α及Lp(a)与正常组比较差异有统计学意义 ;尿毒症患者血Lp(a)与CRP、TNF α、IL 6呈明显正相关 (r值分别为 0 .6 32、0 .4 2 5、0 .4 0 5 ,均P <0 .0 1)。结论　尿毒症患者存在微炎症状态 ;炎症可能通过引起Lp(a)代谢紊乱 ,对心血管系统产生不利影响     

失代偿期肝硬化患者血脂变化分析

目的 :探讨肝硬化对血脂代谢的影响。方法 :观察失代偿期肝硬化患者血脂水平 ,包括甘油三酯 (TG)、总胆固醇 (Tch)、低密度脂蛋白胆固醇 (LDL ch)和高密度脂蛋白胆固醇 (HDL ch) ,并以肝功能正常者作对照。结果 :肝硬化患者TG水平明显低于对照组 [(0 .76± 0 .3 6)mmol/L比 (1.3 1± 0 .41)mmol/L ,P <0 .0 0 1] ,Tch和LDL ch明显低于对照组 [Tch(2 .80± 0 .94)mmol/L比 (3 .95± 1.90 )mmol/L ;LDL ch(1.83± 0 .62 )mmol/L比 (2 .60± 1.2 5 )mmol/L ,P值分别 <0 .0 5 ] ,而HDL ch在两组间无明显差异 [(0 .64± 0 .3 9)mmol/L比 (0 .78± 0 .2 7)mmol/L ,P >0 .0 5 ]。结论 :血甘油三酯降低比胆固醇降低更能反映肝硬化患者肝功能受损的情况     

Ultrasonic study of venous patterns in the right hypochondrium: An anatomical approach to differential diagnosis of obstructive jaundice

Through real time ultrasonography, it is possible to display the splenic vein, the superior mesenteric vein, the vena porta, and the intrahepatic portal and systemic veins. In jaundice, it is of the utmost importance to carefully identify the vena porta before making a diagnosis of common bile duct enlargement. It is also necessary, when confronted with a pattern of apparently enlarged intrahepatic ducts, to conduct a thorough study of possible confluences of the ducts with the vena porta or vena cava to be certain that the ducts are not part of the portal or systemic venous network. Without such differentiation, portal enlargement caused portal hypertension, systemic venous enlargement caused cardiac insufficiency, or even nonpathological wide veins may lead to an erroneous diagnosis of obstructive jaundice.     

The clearance of Procalcitonin (PCT) during continuous veno-venous hemodiafiltration (CVVHD)

Objective. To evaluate the Procalcitonin (PCT) clearance during continuous veno-venous hemodiafiltration (CVVHD).?Design. Case report?Setting. Surgical intensive care unit?Patient. 51-year-old man, who had undergone total thyroidectomy about ten years before owing to multiple endocrine neoplasia 2 (MEN 2), suffering from multiple organ dysfunction syndrome (MODS) with acute renal failure after severe trauma caused by a traffic accident.?Measurements and main result. The samplings of prefilter (afferent) and post-filter (efferent) blood and of ultradiafiltrate were 6 times performed during 24 h of CVVHD to calculate the PCT clearance of hemdiafiltration.?During the first half period of CVVHD the serum PCT concentration did not decrease, though PCT had been eliminated from serum. On the other hand during the latter half period of it the serum PCT value decreased (from 46.8 ng/ml to 29.4 ng/ml) and the amount of the eliminated PCT from serum was about 100 ng per minute and its clearance was 2.3 ∼ 3.4 ml/min.?Conclusion. The CVVHD could eliminate PCT from serum. First it was brought about by the adsorption by the filter menbrane and then by ultradiafiltration. Received: 25 February 1999/Final revision received: 31 May 1999/Accepted: 9 June 1999     

脑梗塞患者t-PA、PAI检测的临床意义

采用发色底物显色法检测34例脑梗塞患者血浆t-PA、PAI活性,结果t-PA 1.03±0.23 IU,PAI 9.05±1.12AU,与健康人比较有显著性差异(P<0.01).提示患者纤溶活性降低.本组呈现t-PA愈低,PAI愈高,患者病情愈重.复发机会愈多的趋势.我们认为t-PA及PAI活性的检测对脑梗塞及血栓前状态的诊断、治疗有一定的临床意义及参考价值.对使用纤溶剂出血等副作用的监测和预防有重要的临床意义.     

周剂量多西紫杉醇联合顺铂二线治疗进展期胃癌的临床研究

目的 研究多西紫杉醇(TXT)联合顺铂(DDP)方案二线治疗进展期胃癌的疗效和毒副作用.方法 既往应用FOLFOX4或XELOX方案化疗进展的晚期胃癌患者36例,采用多西紫杉醇(艾素)35 mg/m2,第1、8天,静滴;顺铂20 mg/m2,第1～5天,静滴,21 d为1个周期.结果 36例患者中,CR 0例,PR 10例,SD 12例,PD 14例,客观有效率(CR+PR)27.8%,中位生存期6.5个月,中位肿瘤进展时间4.4个月.毒副作用主要为中性粒细胞减少.结论 多西紫杉醇联合顺铂方案二线治疗进展期胃癌有效率较高,有生存优势,毒副作用可耐受.     

The utility of < or =3-day-old whole-blood platelets in reducing the incidence of febrile nonhemolytic transfusion reactions

BACKGROUND: Febrile nonhemolytic transfusion reactions (FNHTRs) to platelet transfusions have been linked to the presence of cytokines in supernatant plasma. Cytokine concentration is directly related to WBC content and storage time. This study evaluated the effect of limiting the storage time of random-donor platelet concentrates on the FNHTR rate. STUDY DESIGN AND METHODS: FNHTR rates were calculated retrospectively for single-donor apheresis platelet (SDP) and pooled random-donor platelet (PP) transfusions given during three consecutive 5-month study periods (November 1995 to February 1997) to patients on a single hematology/oncology/bone marrow transplant unit. Transfusion practice policies were: Baseline Period, SDPs preferred; Study Period A, PPs preferred; and Study Period B, < or =3-day-old PPs preferred. FNHTR rates were calculated from physicians' interpretations of reported reactions and the total number of SDP and PP transfusions in each period. SDPs were collected on two cell separators. All platelet components were filtered at issue in the laboratory by WBC-reduction filters. RESULTS: FNHTR rates for PP transfusions were: baseline, 11.1 percent (3/27); Study Period A, 4.6 percent (22/481); and Study Period B, 1.1 percent (3/282). The rates for SDP transfusions were 0. 15 percent (1/650), 0.75 percent (2/267), and 0.36 percent (1/273), respectively. The FNHTR rate for < or =3-day-old PPs was significantly less than the rate for older PPs (p = 0.0086 for Study Period A vs. Study Period B), and was not significantly different than that for SDPs (p = 0.33 for PPs vs. SDPs in Study Period B). CONCLUSION: Limiting transfusion of PPs to those stored 相似文献   

Single-donor platelets reduce the risk of septic platelet transfusion reactions

BACKGROUND: Septic platelet transfusion reactions (SPTRs) are the most common, serious risk of transfusion. Because SPTRs result from donor skin flora or asymptomatic bacteremia, the use of single-donor platelets (SDPs) has been proposed to reduce the risk of SPTRs from the risks with pools of platelet concentrates (PCs). STUDY DESIGN AND METHODS: Beginning in 1986, all febrile transfusion reactions were evaluated by culture of the platelet bag. Confirmed SPTRs were identified by isolation of the same bacteria from the bag and the patient's blood or by positive Gram's stain of the bag that confirmed a positive platelet culture. In 1987, a program to minimize PC use in favor of SDP use was initiated as a means of reducing SPTRs. RESULTS: In 12 years, the use of SDPs increased from 51.7 percent to 99.4 percent of all platelet transfusions at one institution. SPTRs fell from three events in 1 year to the current rate of one event per year. The incidence of SPTRs decreased from 1 in 4,818 transfusions to 1 in 15,098 transfusions. The rate of SPTRs due to PCs was 5.39 times higher than that of SPTRs due to SDPs (95% CI, 1.89,12.9). CONCLUSION: The use of SDPs is a simple means of reducing SPTRs. Other measures such as sterilization will be required to eliminate all SPTRs.     

Intermittent hypoendorphinaemia in migraine attack

Beta-endorphin (RIA method, previous chromatographic extraction) was evaluated in plasma of migraine sufferers in free periods and during attacks. Decreased levels of the endogenous opioid peptide were found in plasma sampled during the attacks but not in free periods. Even chronic headache sufferers exhibited significantly lowered levels of beta-endorphin, when compared with control subjects with a negative personal and family history of head pains. The mechanism of the hypoendorphinaemia is unknown: lowered levels of the neuropeptide, which controls nociception, vegetative functions and hedonia, could be important in a syndrome such as migraine, characterized by pain, dysautonomia and anhedonia. The impairment of monoaminergic synapses ("empty neuron" condition) constantly present in sufferers from serious headaches, could be due to the fact that opioid neuropeptides, because of a receptoral or metabolic impairment, poorly modulate the respective monoaminergic neurons, resulting in imbalance of synaptic neurotransmission.     

WBC-reduced platelet concentrates from pooled buffy coats in additive solution: an evaluation of in vitro and in vivo measures

BACKGROUND: The use of a platelet additive solution (PAS-II, Baxter) may have benefits over plasma for storage of platelets. It was the aim of this study to develop a method to produce WBC-reduced platelet concentrates (PCs) in PAS-II with >240 x 10(9) platelets and <1 x 10(6) WBCs per unit, which can be stored for 5 days at pH >6.8 and that will give sufficient platelet increments after transfusion: a 1-hour CCI of >7.5 and a 20-hour CCI of >2.5. STUDY DESIGN AND METHODS: PCs were made from five pooled buffy coats and 250 g of PAS-II. After centrifugation the PCs were WBC-reduced with a filter (Autostop BC, Pall Biomedical) and stored in a 1000-mL polyolefin container. CCIs were assessed in stable hemato-oncologic patients after 5-day old PCs were transfused. RESULTS: Routinely produced PCs contained a median of 310 x 10(9) platelets (n = 5,363) with 3.5 percent containing <240 x 10(9) platelets, in a median volume of 320 mL (n = 11,834). The median number of WBCs was <0.03 x 10(6) (n = 694). The WBC count exceeded 1 x 10(6) in three PCs, but it was always <5 x 10(6), giving 99-percent confidence that more than 99.5 percent of the units will contain <1 x 10(6) WBCs. The pH remained >6.8 on Day 8, provided the concentration was below 1.1 x 10(9) platelets per mL (n = 32). After 28 transfusions in 28 patients, the 1-hour CCI was 12.6 +/- 4.3 (mean +/- SD, with 2/28 CCIs <7.5) and the 20-hour CCI was 8.9 +/- 5.6 (with 4/28 CCIs <2.5). Limitations of this study include the absence of a control group of patients receiving platelets stored in plasma and of in vivo radiolabeled survival studies, but a comparison of these data with previously published data suggested that the in vivo survival of platelets stored in PAS-II is less than that of platelets stored in plasma. CONCLUSION: The WBC-reduced PCs conformed to specifications. These WBC-reduced PCs could be stored at least 5 days with maintenance of pH, and they gave sufficient increments after transfusion to patients.     

白介素和集落刺激因子对5-Fu处理小鼠脾集落形成的影响

给小鼠静脉注射5-fluorouracil(5-Fu),4日后将鼠脾细胞与各种细胞因子混合培养观察集落形成情况,结果表明IL-3作用于小鼠脾细胞CFU-S阶段,其作用与IL-3的剂量有关,红细胞生成素(EPO)作用于红细胞系CFU-S以下的分化成熟,IL-6,G-CSF,GM-CSF作用于粒细胞系统的分化成熟,IL-3与EP0,IL-6,G-CSF和GM-CSF均有协同作用。     

纳洛酮对心肺脑复苏作用的评价

目的 :①观察研究纳洛酮在心肺脑复苏中的作用机理及实际疗效 ;②研究心搏骤停患者血中 β -内啡肽 (以下简称 β -EP)与正常人的差异。 方法 :①随机划分急诊和住院抢救的心搏骤停患者为纳洛酮复苏组与常规复苏组两组。前者以常规复苏为基础 ,再给予纳洛酮2 0mg加生理盐水 2 0ml静注 ,并可间隔 30min多次重复使用。②对常规复苏组和对照组 2 0例健康体检者均抽静脉血 5ml入专用抗凝管离心取血清存放于冰箱、集中一次测定 β -EP。 结果 :纳洛酮组复苏成功率 42 9% ,常规组复苏成功率 14 3% ,纳洛酮组复苏成功率显著高于常规组(P <0 0 5 )。心搏骤停患者血中 β -EP含量较正常人明显增高。 结论 :纳洛酮作为阿片受体纯拮抗剂 ,从多个环节中促进了心肺脑诸器官复苏 ,故临床应用纳洛酮可明显提高心肺脑复苏成功率