卡托普利对豚鼠心室肌细胞跨膜电位及L-型钙电流影响的初步观察

我们采用蛋白酶（０．２ｍｇ／ｍｌ）循环消化的方法获取了７０％～８０％耐钙豚鼠心肌细胞，并用膜片钳全细胞式记录方法，初步观察了卡托普利（Ｃａｐｔ）对心室肌细胞跨膜电位及Ｌ型钙电流的影响。实验表明，Ｃａｐｔ１０μｍｏｌ／Ｌ显著缩短豚鼠心肌单细胞的动作电位时程（ＡＰＤ），药物作用１０分钟后，ＡＰＤ５０缩短３７．２２％，ＡＰＤ９０缩短３５．３３％（ｎ＝３，Ｐ＜０．０５）；但对静息电位（ＲＰ）、超射（ＯＳ）和动作电位幅度（ＡＰＡ）无显著影响。当心肌细胞的保持电压为－４０ｍＶ，除极到０ｍＶ，刺激电压时程为２５０ｍｓ，频率为０．５Ｈｚ时，Ｃａｐｔ１０μｍｏｌ／Ｌ可使Ｌ型钙内向峰电流减少４２．６８％，正常对照组在同一时间内仅下降４．１％（ｎ＝３，Ｐ＜０．０５）。可见，卡托普利具有类似维拉帕米样Ｌ－型钙通道阻断剂作用。     

粉防己碱对豚鼠心室肌细胞钙电流的影响

应用全细胞记录式膜片钳技术研究了粉防己碱（Ｔｅｔ）对豚鼠心室肌细胞Ｌ型钙电流（Ｉ（Ｃａ））的影响。Ｔｅｔ１μｍｏｌ／Ｌ使Ｉ（Ｃａ））的电流－电压关系曲线之各电流值均降低。指令电位（ＶＴ）为０ｍＶ，Ｔｅｔ０．１～３．２μｍｏｌ／Ｌ　使Ｉ（Ｃａ）呈浓度依赖性降低，半数抑制浓度（Ｌ（５０））为０．７μｍｏｌ／Ｌ。此外，Ｔｅｔ０．３μｍｏｌ／Ｌ能阻滞异丙基肾上腺素（Ｉ（ｓｐ））０．１μｍｏｌ／Ｌ引起的Ｉ（Ｃａ）的增大。证明Ｔｅｔ可阻滞豚鼠心室肌细胞Ｌ型钙电流，并提示有增大延迟整流钾电流（Ｉ（ｏｕｔ））的作用。     

粉防己碱对豚鼠心室肌细胞钙电流的影响

应用全细胞记录式膜片技术研究了粉防己碱（Ｔｅｔ）对豚鼠心室肌细胞Ｌ型钙电流（Ｉｃａ）的影响，Ｔｅｔ１μｍｏｌ／Ｌ使Ｉｃａ的电流－电压关系曲线之各电流值为均降低，指令电位（ＶＴ）为０ｍＶ，Ｔｅｔ０．１～３．２μｍｏｌ／Ｌ使Ｌｃａ呈浓度依赖性降低，半数抑制浓度（ＩＣ５０）为０．７μｍｏｌ／Ｌ，此外Ｔｅｔ０．３μｍｏｌ／Ｌ能阻滞异丙基肾上腺素（Ｉａｐ）０．１μｍｏｌ／Ｌ引起的Ｉｃａ的增大，证明了Ｔｅｔ可     

人参皂甙Rg1对培养心肌细胞钙通道阻滞作用的单通道分析

用细胞吸附（Ｃｅｌｌ－ａｔｔａｃｈｅｄ）的膜片钳（Ｐａｔｃｈ ｃｌａｍｐ）方法，在培养２４－４８ｈ的Ｗｉｓｔａｒ大鼠乳鼠心室肌细胞上，研究Ｒｇ１对心肌细胞钙通道的影响。由－７０ｍＶ的保持电位阶跃至一１０ｍＶ诱发Ｔ型通道的活动，由－５０ｍＶ阶跃至＋１０ｍＶ诱发Ｌ型钙通道的活动，在－６０ｍＶ的保持电压下，记录Ｂ型钙通道的活动。向浸溶液中分别加入Ｒｇ１，钙通道阻断剂Ｖｅｒａｐａｍｉｌ，钙通道激动剂Ｂａｙ     

免疫凝聚比浊试验对糖尿病肾病早期诊断的临床意义

比较了ＡＴ（Ｌａｔｅｘ免疫凝聚比浊测定法）和ＲＩＡ法（放射免疫测定法）检测新鲜的随机尿样微量白蛋白（ｍＡ），并评价其临床应用价值。健康对照组ＡＴ（－）（１１例），尿白蛋白６．０±２．３ｍｇ／Ｌ糖尿病组ＡＴ（－）（６１例），１１．０±８．７ｍｇ／Ｌ；ＡＴ（＋）组（１３例），３８．１±１０．２ｍｇ／Ｌ。用ＲＩＡ法测尿帆ｍＡ，以ｍＡ３０ｍｇ／Ｌ作为分割线，ＡＴ与ＲＩＡ法的一致率为８９．２％，结果表明ＡＴ可以作为早期糖尿病肾病尿微量白蛋白监测的简便迅速的方法。     

参麦注射液对缺血大鼠心肌内钙超载的影响

目的：观察参麦注射液对大鼠缺血心肌细胞内钙超载的影响及其心肌保护作用。方法：用异丙肾上腺素制备大鼠心肌缺血模型,Ｆｕｒａ－２ 法测定大鼠红细胞胞浆游离钙浓度（ＥｒｙＣａｉ）;生化法测定红细胞膜钙泵（Ｃａ－ｐｕｍ ｐ）、钠泵（Ｎａ－ｐｕｍ ｐ）活性,同步观察大鼠心肌组织病理变化。结果：参麦注射液治疗后ＥｒｙＣａｉ较缺血组显著降低（１．６８±０．１０ Ｆ３３５／Ｆ３８５ ｖｓ１．５６±０．１５ Ｆ３３５／Ｆ３８５ Ｐ＜ ０．０５）,但仍高于对照组（１．５６±０．１５ Ｆ３３５／Ｆ３８５ ｖｓ１．３６±０．１０Ｆ３３５／Ｆ３８５ Ｐ＜ ０．００１）;钙泵（１０５．１±２９．４ μｍ ｏｌＰｉ·ｇＨｂ－ １ ·２ｈ－ １ｖｓ １２６．８±３０．７ μｍ ｏｌＰｉ·ｇＨｂ－ １ ·２ｈ－ １ Ｐ＞ ０．０５）及钠泵（３５．１±１８．２ μｍ ｏｌＰｉ·ｇＨｂ－ １·２ｈ－ １ ｖｓ ４３．３±１０．２ μｍ ｏｌＰｉ·ｇＨｂ－ １·２ｈ－ １ Ｐ＞ ０．０５）活性较缺血组有所增高,但无统计学意义,且钙泵（１２６．８±３０．７ μｍ ｏｌＰｉ·ｇＨｂ－ １ ·２ｈ－ １ ｖｓ １６８．６±３９．６ μｍ ｏｌＰｉ·ｇＨｂ－ １ ·２ｈ－ １ Ｐ＜ ０．０１）及钠泵（４３     

大鼠肺动脉平滑肌细胞的外向钾电流及四乙基铵对此电流作用的量效关系

以全细胞膜片钳制技术观察大鼠肺动脉平滑肌细胞外向钾电流的基本特性及四乙基铵（ＴＥＡ）对其作用的量效关系。结果表明：１．将细胞膜电位钳制在－５０ｍＶ，当指令电位大于－５０ｍＶ时，可以记录到电压依赖性的外向钾电流；２．当指令电位为＋７０ｍＶ时，在１０－３ｍｏｌ／Ｌ、１０－４ｍｏｌ／Ｌ、１０－５ｍｏｌ／Ｌ和１０－６ｍｏｌ／Ｌ各浓度的四乙基铵可使外向钾电流分别降低４８．３７％、４１．２１％、２２．１５％和１０．４７％。四乙基铵对外向钾电流的作用具有浓度依赖关系     

环维黄杨星 Ｄ对 Ｈ２Ｏ２ 损伤大鼠心房肌细胞 Ｌ型钙通道的影响

目的 探讨环维黄杨星 Ｄ对过氧化氢（Ｈ２Ｏ２）损伤大鼠心房肌细胞 Ｌ型钙通道的作用,阐明环 维黄杨星 Ｄ可能通过影响 Ｌ型钙通道动力学参数发挥抗心律失常、抗氧化应激的作用机制。方法 用 Ｌａｎ ｇｅｎｄｏｒｆｆ灌流装置系统逆行灌流心脏,急性酶解法分离获得成年 ＳＤ大鼠心房肌细胞,用 １００μｍｏｌ／ＬＨ２Ｏ２ 对 大鼠心房肌细胞进行预处理,细胞分为 ３组（ｎ为细胞数）：对照组（ｎ＝８）：细胞不经过任何处理;Ｈ２Ｏ２ 组 （ｎ＝８）：细胞经 １００ｍｏｌ／Ｌ的 Ｈ２Ｏ２ 培养 ０.５ｈ;环维黄杨星 Ｄ组（ｎ＝９）：细胞预先经 １００ｍｏｌ／ＬＨ２Ｏ２ 培养 ０.５ ｈ后加入 ２０μｍｏｌ／Ｌ环维环维黄杨星 Ｄ培养 ０.５ｈ,使用全细胞膜片钳技术记录心房肌细胞 Ｌ型钙电流 （ＩＣａＬ）、失活曲线、恢复曲线,观察对照组、Ｈ２Ｏ２ 组,环维黄杨星 Ｄ组 Ｌ型钙通道电生理特性的变化。结果 与对照组相比,Ｈ２Ｏ２ 组的 ＩＣａＬ密度增大［（－４.４９±０.５９）ｐＡ／ｐＦｖｓ．（－７.４７±０６８）ｐＡ／ｐＦ,Ｐ＜０.０５］;与 Ｈ２Ｏ２组相比,环维黄杨星 Ｄ组 ＩＣａＬ密度减小［（－７.４７±０.６８）ｐＡ／ｐＦｖｓ．（－４.９５±０.４８）ｐＡ／ｐＦ,Ｐ＜０.０５］。 结论 Ｈ２Ｏ２ 增大 ＩＣａＬ密度,环维黄杨星 Ｄ抑制 ＩＣａＬ密度,环维黄杨星 Ｄ组对 Ｌ型钙通道激活失活曲线无影响, 环维黄杨星 Ｄ可能通过改变 ＩＣａＬ密度发挥抗心律失常、抗氧化应激的作用。     

动脉粥样硬化病变中p53基因的突变与脂质关系的研究

分析中国成人动脉粥样硬化（ＡＳ）病变中ｐ５３抑癌基因结构的突变与血清脂质水平及动脉管壁粥样硬化组织内的脂质含量之间的关系。方法应用α－３２Ｐ－ｄＣＴＰ底物标记的ＤＮＡ多聚酶链反应－单链构像多态性分析技术检测ｐ５３基因结构的突变；同时测定了ｐ５３基因突变组与无突变组的血清总胆固醇（ＴＣ）、甘油三酯（ＴＧ）、胆固醇酯（ＣＥ）及动脉管壁粥样硬化组织内的ＴＣ、ＴＧ、ＣＥ含量。结果ｐ５３基因突变组的动脉管壁硬化组织内的ＴＣ、ＴＧ、ＣＥ含量显著高于无突变组（Ｐ≤０．０５～０．０１）。两组间血清ＴＣ分别为５．９６±１．１４ｍｍｏｌ／Ｌ、５．４７±１．０９ｍｍｏｌ／Ｌ（Ｐ＞０．２５）ＴＧ分别为１．３０±０．２７ｍｍｏｌ／Ｌ、１．４２±０．２９ｍｍｏｌ／Ｌ（Ｐ＞０．０５）；结论ｐ５３抑癌基因结构的突变可能是动脉粥样硬化形成过程中的另一重要因素。     

肝性脑病大鼠海马CA1区锥体细胞氨基酸激活电流改变

探讨氨基酸受体门控性离子通道电流改变在肝性脑病（ＨＥ）发生中的作用。方法用快速加药装置将５０μｍｏｌ／Ｌγ－氨基丁酸（ＧＡＢＡ）或１ｍｍｏｌ／ＬＮ－甲基－Ｄ－天冬氨酸（ＮＭＤＡ）＋１０μｍｏｌ／Ｌ甘氨酸（Ｇｌｙ）加于急性分离的大白鼠海马ＣＡ１区锥体细胞周围，用全细胞膜片钳技术记录ＧＡＢＡ或ＮＭＤＡ激活的电流。结果ＨＥ大鼠海马ＣＡ１区锥体细胞ＧＡＢＡ激活的内向电流的强度为４１３．３±４３６．８ｐＡ（３１例），比对照大鼠（２３３．４±１７９．７ｐＡ，２８例）有较大增强（ｔ＝２．１０４９，Ｐ＜０．０５）。并观察到ＨＥ大鼠ＧＡＢＡ激活电流的出现频率较对照大鼠高。ＨＥ大鼠ＮＭＤＡ激活的内向电流的强度为４０８．５±３１７．２ｐＡ（３７例），比对照大鼠（８８２．６±８９６．５ｐＡ，２６例）弱（ｔ＝２．５８５１，Ｐ＜０．０５）。两组大鼠ＮＭＤＡ激活电流的出现频率无明显差异。结论氨基酸受体门控性离子通道电流改变在肝性脑病发生中起一定作用。     

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…     

Acupuncture Treatment of Vomiting

CASE HISTORY A female patient, 46 years old, head of the foreign affairs department of a certain university in Beijing, paid her first visit on October 9, 2006, with the chief complaint of vomiting for one month. She got vomiting after meals in early September. Before that, she had discomfortable sensation in the stomach due to angry with others, but she didn't pay much attention. Later, it developed into vomiting after eating. After the vomiting, the discomfort would be relieved, but with slight hypodynamia. She was once diagnosed as having 'neurogenic vomiting'. Having taken some western and Chinese drugs, the above symptoms were a little bit improved, but she would have nausea upon eating and with regurgitation. Because of the fear for vomiting, she did not dare to have food intake, with body weight reduction of 6 kilos in one month.     

Qiu Baoguo''''s Experience in Treating Consumptive Syndromes after Radio-Chemotherapies

Radiotherapy and chemotherapy are the important modern medical therapies for malignant tumors,yet they can also bring about serious local and systemic toxic side reactions so to decrease the patient;'s life quality,manifested by a series of consumptive symptoms.Having engaged in the combined work of Chinese and western medicine for nearly 50 years,the research fellow Qiu Baoguo in Henan Provincial Academy of TCM has developed his unique views on the TCM study of consumptive syndromes.The author of this essay had once the fortune tO follow Dr.Qiu in clinic,and specially would like to introduce in the following Dr.Qiu's experience in treating consumptive syndromes after radio-chemotherapies for patients with malignant tumor.     

Insomnia Due to Deficiency of Both the Heart and Spleen Treated by Acupuncture-Moxibustion and Chinese Tuina

OBJECTIVE: To observe therapeutic effects of the comprehensive therapy of acupuncture-moxibustion and Chinese Tuina for treatment of insomnia due to deficiency of both the heart and spleen. METHODS: 92 cases were divided randomly into the treatment group (treated by acupuncture-moxibustion and Chinese Tuina) and the control group (treated by acupuncture-moxibustion). RESULTS: The therapeutic effect of the treatment group was obviously superior to that of the control group (the CHI2 test showed P < 0.01). CONCLUSIONS: The comprehensive therapy of acupuncture-moxibustion and Chinese Tuina can give marked therapeutic effects for treatment of insomnia due to deficiency of both the heart and spleen.     

Analysis of CK-19,PDX-1,Nestin,Ngn3 in different donor islet purity in rats

Objective: To investigate if there are the CK-19, PDX-1, Nestin, Ngn3 positive cells in the donor islets of different purity in rats. Methods: Thirty male adult SD rats were randomly divided into 3 groups. Islets were isolated using digestion by ductal injection of collagenase. Group Ⅰ (n=10): Separating cell preparations were not purified, Group Ⅱ(n=10): Islet sediment was purified with 25% Ficoll400 ,Group Ⅲ (n=10): Islet sediment was purified with 25% and 11% Ficoll-400. The levels of protein of CK-19, PDX-1, Nestin and Ngn3 were detected by immunohistochemistry and the mRNA of CK-19, PDX-1, Nestin, Ngn3 was amplified by RT-PCR. Results: After two different purification methods applied, three islet preparations of different purities were obtained. The difference of islet purity was significant among various groups (P＜0.05). Compared with group Ⅱ and group Ⅲ,the protein and mRNA of CK-19, PDX-1, Nestin,Ngn3 were both higher in group Ⅰ; group Ⅲ was poorly expressed. Conclusions: The three different islet purity donor islet have different CK-19, PDX-1, Nestin, Ngn3 positive cells within them, indicating that there are some islet stem cells in the purified donor islet.     

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.