阳离子交换色谱一步法制备级纯化单克隆抗体

应用快速蛋白液相色谱系统（ＦＰＬＣ）建立一种一步法制备级纯化单隆抗体方法。方法：将ＭｃＡｂ腹水用ｐＨ６．０，０．０１ｍｏｌ／Ｌ ＰＢ透析或稀释８倍后直接上ＳＰ－４０ＨＲ阳离子交换色谱柱，用ＰＢ－ＮａＣｌ二元线性离子梯度洗脱，即得到纯化的ＭｃＡｂ。结果：每次上样量７０～８０ｍｌ腹水，可获得纯化ＭｃＡｂ５００～５８０ｍｇ，得率７～７．５ｍｇ／ｍｌ腹水，回收率为７０％～７５％，ＳＤＳ－ＰＡＧＥ检测纯度为     

一种简单实用纯化腹水McAb方法--辛酸/硫酸铵法

采用辛酸－硫酸铵法（ＣＡ－ＡＳ）、硫酸铵沉淀法（ＣＡ）和亲合层析法,分别提取了小鼠多株腹水单抗。结果显示：ＣＡ－ＡＳ法提取的ＩｇＧ 纯度为８７％ ～９１％ ,高于ＣＡ 法（６５％ ～７０％ ）,低于亲合层析法（１００％ ）;ＣＡ－ＡＳ法提取的ＩｇＧ得率为４．８～５．５ｇ／Ｌ腹水,低于ＣＡ 法（７．０～７．９ｇ／Ｌ腹水）,远高于亲合层析法（０．６ｇ／Ｌ腹水）;ＣＡ－ＡＳ法提取ＩｇＧ回收率为３９．０％ ～４４．４％ ,低于ＣＡ法（５６．０％ ～６５．０％ ）,远高于亲合层析法（７．４％ ）。４Ｅ３、Ｈ６ 腹水抗体经ＣＡ－ＡＳ法提取前后酶联效价不变,表明ＣＡ－ＡＳ法对ＭｃＡｂ 活性无影响。作者认为,ＣＡ－ＡＳ法是一种操作简便,耗时短,效果佳,成本低的提取腹水ＭｃＡｂ 的新方法。     

分枝杆菌多糖对小鼠造血功能的影响

观察了分枝杆菌多糖（ＭＰＳ）对环磷酰胺抑制ＢＡＬＢ／ｃ小鼠骨髓作用的影响。结果表明：给予ＣＰＡ使小鼠骨髓ＧＭ－ＣＦＵ抑制约３０％左右。１．０ｍｇ／ｋｇ的ＭＰＳ对ＧＭ－ＣＦＵ有促进作用（第１批实验ＣＰＡ对照组３１６．５±３４．６，实验１组４５４．５±１９．１，Ｐ＜０．０５；第２批实验ＣＰＡ对照组２０８．７±４３．７，实验２组４３７．８±５４．１，Ｐ＜０．０２）；而０．１５ｍｇ／ｋｇＭＰＳ无促进作用。在０．１５和１．０ｍｇ／ｋｇ剂量下，小鼠血清ＧＭ－ＣＳＦ活性水平明显提高；０．１５和１．０ｍｇ／ｋｇＭＰＳ可分别刺激小鼠每０．１ｍＬ血清产生５００Ｕ和８５０ＵＧＭ－ＣＳＦ。分析认为ＭＰＳ与日本的Ｚ－１００活性水平相当，这些作用可能通过激活单核或Ｔ细胞而间接产生。     

黄曲霉毒素B_1单克隆抗体的制备和鉴定

以自己合成的黄曲霉毒素Ｂ＿１一人血清白蛋白（ＡＦＴＢ＿１－ＨＳＡ）偶联物免疫ＢＡＬＢ／ｃ鼠，应用杂交瘤技术，建立了两株能持续分泌抗ＡＦＴＢ＿１单克隆抗体（ＡＦＴＢ＿１ＭｃＡｂ）的杂交瘤细胞株，命名为ＩＢ５和２Ｆ１，接种ＢＡＬＢ／ｃ鼠腹腔均能诱发产生含特异性抗体的腹水。用间接竞争抑制ＥＬＩＳＡ鉴定ＭｃＡｂ的反应特异性，使ＭｃＡｂ与固相黄曲霉毒素Ｂ＿１一牛血清白蛋白（ＡＦＴＢ＿１－ＢＳＡ）结合产生５０％抑制所需的ＡＦＴＢ＿１、Ｂ＿２、Ｇ＿１、Ｇ＿２浓度依次为：１Ｂ５４．０、３６．９、２３．３、４０３．３ｎｇ／ｍｌ，２Ｆ１２．４、２．６、２．８、４。７ｎｇ／ｍｌ。     

抗HSV—1杂交瘤细胞系的建立及单抗特性研究

以ＨＳＶ－１为抗原，免疫ＢＡＬＢ／Ｃ鼠，取其脾细胞在ＰＧＥ介导下与ＳＰ２／０细胞常规融合，ＩＦＡ法筛选鉴定，反复克隆，共获得７株能稳定、持续分泌抗ＨＳＶ的ＭｃＡｂ的杂交瘤细胞系。核型分析染色体数为８７￣１０３条之间，Ｉｇ类型分别为ＩｇＧ１、ＩｇＧ２ｂ、ＩｇＧ３，腹水抗体效价在１０＾－５￣１０＾－７之间免疫沉淀。ＳＤＳ－ＰＡＧＥ分析，２株与１３２Ｋ多肽发生特异性反应，只具有ＨＳＶ－１型特异性，其余３     

ATG和抗CD_3McAb对再障患者CFU－GM生长的体外影响研究

用ＣＦＵ－ＧＭ半固体琼脂培养技术研究了抗人胸腺细胞球蛋白（ＡＴＧ）和抗ＣＤ３单克隆抗体（ＭｃＡｂ）对１８例再生障碍性贫血（ＡＡ）患者骨髓ＣＦＵ－ＧＭ体外生长的影响。结果表明，１．加入１６．７μｇ／ｍｌＡＴＧ或１：５０抗ＣＤ３ＭｃＡｂ，体外均可增加ＡＡ患者骨髓ＣＦＵ－ＧＭ的集落数（Ｐ＜０．０５），两者的作用无显著差异（Ｐ＞０．０５）。２．ＡＴＧ和抗ＣＤ３ＭｃＡｂ对ＡＡ患者干细胞缺乏型和免疫介导型的作用无显著差异（Ｐ＞０．０５）。用此项技术对ＡＡ患者作药敏试验，并加测外周血ＣＤ８＋、ＤＲ＋细胞比值，可作为选择免疫抑制疗法的参考。     

抗HSV－1杂交瘤细胞系的建立及单抗特性研究

以ＨＳＶ－１为抗原，免疫ＢＡＬＢ／Ｃ鼠，取其脾细胞在ＰＧＥ介导下与ＳＰ２／０细胞常规融合，ＩＦＡ法筛选鉴定，反复克隆，共获得７株能稳定、持续分泌抗ＨＳＶ的ＭｃＡｂ的杂交瘤细胞系。核型分析染色体数为８７～１０３条之间，Ｉｇ类型分别为ＬｇＧ＿１、ＩｇＧ＿（２ｇ）、ＩｇＧ＿３，腹水抗体效价在１０￣（－５）～１０￣（－７）之间免疫沉淀。ＳＤＳ—ＰＡＧＥ分析，２株与１３２Ｋ多肽发生特异性反应，只具有ＨＳＶ－１型特异性，其余３株与１２０～１２８Ｋ多肽，２株与６０Ｋ多肽发生特异性反应，具有ＨＳＶ型共同抗原特异性。７株ＭｃＡｂ与ＣＭＶ均不发生特异反应。这些杂交瘤细胞系的建立对于ＨＳＶ的临床早期、快速诊断有重要的应用价值。     

甲状腺功能亢进症的骨代谢和骨密度改变

目的　研究甲亢病人的钙磷代谢、骨代谢和骨密度改变及机理。方法　对３８ 例甲亢病人治疗前后用单能 Ｃ Ｔ（ Ｓ Ｅ Ｑ Ｃ Ｔ） 测定骨密度（ Ｂ Ｍ Ｄ） 变化,用双抗体法测定血Ⅰ型胶原羧基端前肽（ Ｃ Ｉ Ｃ Ｐ） ,骨钙素（ Ｂ Ｇ Ｐ） 和尿脱氧吡啶酚（ Ｄ Ｐ Ｄ） 排泄率的变化。结果　治疗前 Ｂ Ｍ Ｄ 明显降低［ 男（１２０±８） ｍｇ／ｃｍ ３ Ｈ Ａ,女（１１４ ±７ ．２） ｍ ｇ／ｃｍ ３ Ｈ Ａ］ 治疗后都恢复正常。血 Ｂ Ｇ Ｐ 男性从（１５ ．２ ±７ ．９）μｇ／ Ｌ 下降到（７ ．５ ±２ ．８）μｇ／ Ｌ（ Ｐ＜ ０ ．０５） ,女性从（１６ ．４ ±７ ．１）μｇ／ Ｌ 下降到（６ ．８ ±２ ．１） μｇ／ Ｌ（ Ｐ＜ ０ ．０１） 。血 Ｃ Ｉ Ｃ Ｐ 男性从（１８５ ±２３ ．５）ｎｇ／ ｍｌ 下降到（７０ ±１０ ．４）ｎｇ／ ｍｌ（ Ｐ＜ ０ ．０５） ,女性从（１６４ ±１６ ．２）ｎｇ／ ｍｌ 下降到（６９ ±９ ．２）ｎｇ／ ｍｌ（ Ｐ＜ ０ ．０５） 。尿 Ｄ． Ｐ． Ｄ 男性从（１３ ．７ ±２ ．５）ｎ Ｍ／ ｍ Ｍ 下降到（３ ．４ ±１ ．０） ｎ Ｍ／ ｍ Ｍ（ Ｐ＜ ０ ．０１） ,女性从（１４ ．６ ±２ ．３）ｎ Ｍ／ ｍ Ｍ 下降到（４ ．５ ±１ ．２     

血β_2－微球蛋白在慢性肺心病缓解期判定肾功能减退的价值

对３０例慢性肺心病缓解期患者及５０例正常人采用ＲＩＡ法测定了血清的β_２－微球蛋白（β_２－ＭＧ），结果显示：慢性肺心病缓解期患者血清β_２－ＭＧ值为３．５±０．５８ｍｇ／Ｌ，较正常人血清β_２－ＭＧ值３．２４±０．４５ｍｇ／Ｌ为高（ｔ检验，Ｐ＜０．０１），肺心病缓解期患者中有１４例（Ａ组）血清β_２－ＭＧ值为４．２９±０．３８ｍｇ／Ｌ，超过正常上限，且血ＢＵＮ６．８ｍｍｏｌ／Ｌ，Ｃｒ１３２μｍｏｌ／Ｌ，Ｃｃｒ６４ｍｌ／ｍｉｎ；另１６例（Ｂ组）血清β_２－ＭＧ值（３．１２±０．３４ｍｇ／Ｌ）正常，血ＢＵＮ５．４ｍｍｏｌ／Ｌ，Ｃｒ１１４μｍｏｌ／Ｌ，Ｃｃｒ１０２ｍｌ／ｍｉｎ，两组β_２－ＭＧ及Ｃｃｒ比较有显著差异（ｔ检验，Ｐ＜０．０１）。提示血清β_２－ＭＧ测定在慢性肺心病缓解期患者中较ＢＵＮ、Ｃｒ能更早地发现肾功能减退。     

用斑眯免疫结合法测定登革病毒单克隆抗体亲和力

建立斑点免疫结合法（ＤＩＡ）测定抗体相对亲和力，用此法测定了登革病毒Ⅱ型非结构蛋白ＮＳ１四株单克隆抗体（ＭｃＡｂａ）的相对亲和力，４株ＭｃＡｂｓ对ＮＳ１的亲和力各不相同，按５０％最大结合浓度分析，抗体株６－１／Ｃ为０．０５μｇ／ｍｌ。１－７／Ｆμｇ／ｍｌ，５Ｄ为２５．００μｇ／ｍｌ。３－１１／Ｃ为５７．０μｇ／ｍｌ。以上结果为应用单克隆抗体提供了依据。同时，说明用ＤＬＡ法测定ＭｃＡｂ相对亲和力的可     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

Objective：To investigate the gene expression of osteoprotegerin（OPG） and osteoclast differentiation factor（ODF） in the bone tissue of patients with hip fracture due to osteoporosis. Methods：OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers（over 50 years old） with hip fracture（Observer Group） and 30 cases of hip facture sufferers with no osteoporosis（Control group） were analyzed with the Semi-Quantitative RT-PCR method. Results：The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion：Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.     

SCREENING FOR A 21-CHROMOSOME ABNORMALITY IN PREIMPLANTED EMBRYOS OF ELDERLY WOMEN

Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.     

Scientific principles and rigorous processes should be followed in developing clinical guidelines for therapeutic interventions of integrative medicine

A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care（~＇4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.