缩胆囊素和谷氨酸对大鼠大脑皮质细胞内游离钙浓度的影响

为探讨胆囊收缩素八肽及中毒剂量谷氨酸对大鼠大脑皮质细胞内Ｃａ＾２＋２的影响及相互关系,以１０＾－１０、１０＾－８、１０＾－６ｍｏｌ／Ｌ等浓度ＣＣＫ－８和１ｍｍｏｌ／ＬＧｌｕ分别或共同作用于大鼠大脑皮质细胞,以流式细胞仪检测「Ｃａ＾２＋」,并探讨其变化机制。（１）１０＾－１０ｍｏｌ／ＬＬＣＣＫ－８可增加「Ｃａ＾２＋」,１０＾－８、１０＾－６ｍｏｌ／ＬＣＣＫ－８无此作用;（２）１０＾－１０ｍｏｌ／ＬＣ     

去甲肾上腺素影响单核细胞抗原提呈的机制

１０＾－１３～１０＾－９ｍｏｌ／Ｌ的去甲肾上腺素体外作用时能促进人外周血单核细胞的抗原提呈功能（ＡＰＦ）。ＰＫＣ激活剂ＰＭＡ和抑制剂４ａ－ＰＤＤ分别能加强和抑制ＮＥ对Ｍｏｎ的ＡＰＦ的促进作用；异搏定能抑制ＮＥ的这种作用，而ＰＫＡ的抑制剂ＰＫＩ对ＮＥ的这种作用无。结果提示ＮＥ促进ＭｏｎＡＰＦ的机制可能涉及到Ｃａ＾２＋和ＰＫＣ，而与ＰＫＡ无关。     

人工细胞抗高血压因子对人脐静脉VSMC胞浆及核内Ca^2＋水平的影响

采实验用Ｆｌｕｏ－３／ＡＭ染色在激光扫描共聚焦显微镜下观察了红细胞抗高血压因子（ａｎｔｉｈｙｐｅｒｔｅｎｓｉｖｅ ｆａｃｔｏｒ,ＡＨＦ）对人脐静脉ＶＳＭＣ胞浆（〗Ｃａ＾２＋〖）及核内（〖Ｃａ＾２＋〗ｎ）游离钙离了瓣影响。结果表明：ＡＨＦ（１０＾－４ｇ／ｍＬ）明显抑制Ｂａｙ ｋ８６４４（１０＾－６ｍｏｌ／Ｌ）ＫＣｌ（６０ｍｍｏｌ／Ｌ）,ＡｎｇⅡ（１０＾－６ｍｏｌ／Ｌ）及ＩＰ３（１０＾－５ｍｏｌ／Ｌ）     

血小板活化因子对嗜酸性粒细胞的活化作用

用多粘菌素Ｂ注射，造成豚鼠腹腔渗出液中嗜酸性粒细胞（Ｅｏｓ）增多，分离出其中的Ｅｏｓ，测定血小板活化因子（ＰＡＦ）对Ｅｏｓ过氧化物酶（ＥＰＯ）活性、Ｅｏｓ沉淀密度和存活时间的作用。结果表明：ＰＡＦ能增强ＥＰＯ活性，诱导Ｅｏｓ脱颗粒，其最大作用浓度分别为１０＾－７ｍｏｌ／Ｌ和１０＾－６ｍｏｌ／Ｌ。淋巴细胞培养上清液能显著增强ＰＡＦ的脱颗粒作用。１０＾－６ｍｏｌ／Ｌ ＰＡＦ还能使１５．９％的正常密度Ｅ     

全反式维甲酸对克隆化高转移人肺癌细胞浸润和转移的抑制作用

用５μｍｏｌ／Ｌ和１０μｍｏｌ／Ｌ全反式维甲酸（ＲＡ）处理克隆化高转移人肺癌细胞（ＰＧＣＬ３）５天后，细胞的体外生长速度、穿过Ｂｏｙｄｅｎ小室人工基底膜胶的浸润能力都受到一定的抑制，其中尤以１０μｍｏｌ／ＬＲＡ的作用明显。实验性转移显示，ＲＡ体外处理ＰＧＣＬ３细胞可在一定程度上降低其实验性转移的能力。此外通过ＤＮＡ－ＲＮＡ斑点杂交还发现ＰＧＣＬ３细胞经１０μｍｏｌ／ＬＲＡ处理５天后，人组织金属蛋白酶抑制剂基因（Ｔｉｍｐ－１和Ｔｉｍｐ－２）表达有一定水平的增高，这有助于进一步阐明ＲＡ抑制肿瘤细胞浸润和转移的机理。     

慢性心功不全大鼠心脏α_1受体对β受体正性变力效应调节作用的改变

本文用缩窄腹主动脉和左肾动脉方法复制慢性心功能不全大鼠模型。用放射配体结合实验观察心脏α＿１肾上腺素受体（α＿１－ＡＲ）及其亚型分布的变化，显示在心功能不全大鼠心肌组织上α＿１－ＡＲ的数量及对￣１２５Ｉ－ＢＥ的亲和性与假手术大鼠无显著差别，但α＿１Ａ亚型占α＿１－ＡＲ总数的比例比假手术大鼠明显增高（５１±７％比２２±５％，Ｐ＜０．０１）。离体左心房收缩功能实验结果显示，两组间心肌最大收缩效应无显著差别；当用１０μｍｏｌ／Ｌ酚妥拉明阻断α＿１－ＡＲ时，心功能不全大鼠去甲肾上腺素（ＮＥ）的浓度－收缩效应曲线无显著左移，用１μｍｏｌ／Ｌ苯肾上腺素激动α＿１－ＡＲ时，亦未使异丙肾上腺素浓度－收缩效应曲线右移，用１ｎｍｏｌ／ＬＷＢ４１０１阻断α＿１Ａ亚型时，ＮＥ浓度－收效应曲线不再出现左移，但２０μｍｏｌ／ＬＣＥＣ不可逆阻断α＿１Ｂ亚型后，ＮＥ浓度－收缩效应曲线仍显著右移。结果提示，心功能不全α＿１－ＡＲ及α＿１Ａ亚型对β－ＡＲ介导的正性变力效应的抑制作用消失，而α＿１Ｂ亚型对β－ＡＲ介导的正性变力效应的增强作用仍存在。     

肾上腺素对培养的大鼠表皮细胞增殖的影响

目的 研究大鼠表皮细胞的增殖活性是随肾上腺素浓度而变化。方法 利用核得区银染法（ＡｇＮＯＲ）配合图像分析观察了肾上腺素浓度在１０＾－１０ｍｏｌ／Ｌ范围内培养的大鼠表皮细胞的增殖活性的变化。结果 在上述浓度范围内,肾上腺素可明显抑制培养大鼠表皮细胞的增殖活性;分析了单位面积细胞核上染色颗粒的面积（ＡＡ）和单位面积细胞核上染色颗粒的数目（ＮＡ）,与对照相比,Ｐ〈０．０１。参数ＡＡ在肾上腺素浓度为１０＾     

血小板活化因子介导肾小球系膜细胞产生活性氧的研究

为探讨血小板活化因子（ＰＡＦ）对肾小球系膜细胞（ＧＭＣ）产生活性氧的调节作用，本研究观察了ＰＡＦ对体外培养的大鼠ＧＭＣ产生超氧化物阴离子（Ｏ）和过氧化氢（Ｈ－２Ｏ－２）的影响。结果表明１０￣（－９）Ｍ／Ｌ的ＰＡＦ已能诱导ＧＭＣ产生Ｏ和Ｈ２Ｏ２（１．１４±０．４２ｎｍｏｌ／１０￣５ＧＭＣ、０．９７±０．１６ｎｍｏｌ／１０－５ＧＭＣ），这一效应呈剂量依赖性；溶ＰＡＦ无诱导ＧＭＣ产生活性氧作用；特异性ＰＡＦ受体拮抗剂ＢＮ５２０２１抑制ＰＡＦ的刺激作用，抑制作用也呈剂量依赖性，５×１０￣（－５）Ｍ／ＬＢＮ５２０２１完全抑制ＧＭＣ合成活性氧。本研究说明ＰＡＦ可诱导ＧＭＣ合成活性氧。     

全反式维甲酸可增强大鼠系膜细胞基质金属蛋白酶-2表达

一、材料与方法１．大鼠系膜细胞（ＭｓＣ）的培养与鉴定：１５０～２００ｇＳＤ大鼠购自本校动物部，取肾皮质，分离肾小球，培养与鉴定ＭｓＣ按本实验室常规方法进行［１］。实验用细胞为１０～１５代。２．Ｎｏｒｔｈｅｒｎｂｌｏｔ法检测基质金属蛋白酶２（ＭＭＰ２）ｍＲＮＡ：当ＭｓＣ长至亚融合状态后，分别在完全培养液中加入全反式维甲酸（ＡＴＲＡ，Ｓｉｇｍａ公司）１０－６、１０－７、１０－８、１０－９、０ｍｏｌ／Ｌ处理２４小时；另在亚融合状态ＭｓＣ加１０－６ｍｏｌ／Ｌ全反式维甲酸分别处理０、６、１２、２４、４…     

小鼠胸腺基质细胞系（MTEC1）对裸鼠骨髓细胞的诱…

在体外建立的小鼠胸腺基质细胞系（ＭＴＥＣ１）及其培养上清（ＭＴＥＣ１－ＳＮ）与裸鼠骨髓（ＢＭ）细胞共同培养，通过直接荧光素标记抗体，ＦＡＣＳ分析其细胞表面标志表明，ＭＴＥＣ１及ＭＴＥＣ１－ＳＮ均有诱导促进Ｔｈｙ·１＾－ＣＤ＾－４ＣＤ＾－８的ＢＭ细胞表达Ｔｈｙ·１，ＣＤ４及ＣＤ８分子的作用。在培养或共育三天时，ＭＴＥＣ１－ＳＮ可促进ＢＭ细胞分化形成ＣＤ＾＋４Ｔｈｙ·１＾－，ＣＤ＾－４Ｔｈｙ·１＾＋细     

Level of functioning of siblings and parents of probands of varying degrees of retardation

A further analysis of already published data supports the position that retardates of low ability level less frequently have retarded siblings, retarded parents, and parents low in occupational level than do retardates higher in ability level. The analysis supports the position that there are two types of retarded individuals, persons retarded as a result of gene or chromosomal anomalies, brain injury, etc., who more frequently occur in the lower-level retardate group, and persons whose retardation represents polygenic segregation, who more frequently occur in the higher-level group.     

局部注射辛伐他汀对骨质疏松大鼠股骨髁骨小梁的改建效应

背景：局部注射具有成骨作用的辛伐他汀,可显著增加骨质疏松大鼠股骨颈及股骨髁部的骨密度及力学强度,分析局部注射辛伐他汀对股骨髁骨小梁的影响。 目的：进一步研究骨质疏松大鼠股骨内局部注射辛伐他汀对股骨髁骨小梁的影响。为将辛伐他汀应用于临床骨质疏松局部治疗提供实验基础。 方法：18只雌性SD大鼠双侧卵巢切除后3个月,制备大鼠骨质疏松模型。实验大鼠随机数字表法均分为3组,分别在实验大鼠的右侧股骨髓腔内单次注射辛伐他汀溶液5 mg、10 mg,对照组单纯注射空白载体。分别在注射后1个月处死大鼠并取材。Micro-CT扫描并定量分析骨组织形态变化。 结果与结论：给药后1个月,Micro-CT扫描结果显示,辛伐他汀治疗组的骨微结构参数如骨皮质厚度、骨小梁密度及连接率明显优于对照组。说明疏松骨骼单次注射小剂量辛伐他汀可显著促进股骨髁部骨小梁改建,改善骨骼微结构,可为强化局部、防治骨质疏松骨折的新选择进一步提供实验基础。     

石斛属民族药用植物的分类及生药学研究

中药石斛早在《神农本草经》中就被列为上品,其应用历史悠久,具有养阴生津、补肾益气、润喉护嗓、活血明目、抗癌防老等功效。本文对国内外石斛属民族药用植物的分类及生药学研究进行了综述。     

膝关节骨性关节炎的关节镜治疗体会

目的我科自2001～2005年4月对59例67膝的骨性关节炎（0A），进行关节镜检查及镜下清理术。方法镜检：膝关节骨性关节炎伴不同程度滑膜炎，滑膜皱壁粘连纤维片，关节软骨不同程度破坏。镜下清除增生滑膜，松解粘连，去除剥脱软骨、修复关节面。结果随访2月～4年，平均1.5年，术后综合评估2月～1年，优良率94％；1～2年，优良率79.2％；2年以上优良率54.8％。结论关节镜对膝关节骨性关节炎诊断能提供了比较全面的资料，并对骨性关节炎早期有良好疗效，具有创伤小、恢复快、并发症少和重复治疗等优点。     

Anatomical study of distribution of valves of the cutaneous veins of adult''s limbs

Since the cutaneous veins of the four limbs have been used as autogenous grafts in the treatment of cardiovascular disorders, knowledge of distribution of the valves is increasingly required depending upon the use. In the gross anatomical study of distribution of valves of the trunci venae, there has been argument about locational relationships between the venous roots and the valves in the vicinity of the roots and the inter-valvular distance. However, there have been only few reports discussing detailed information about valves of the cutaneous veins of the four limbs. The authors observed patterns of distribution of the cutaneous venous valves of the four limbs of cadavers prepared for practice in anatomy. The following parts were excised from each cadaver: the cephalic, basilic, and the great saphenous veins, which originate from the acral venous network and flow into the proximal deep veins, and the venous roots communicating with these veins. An incision was made on each excised vein in the direction of the long axis under observation with a stereoscopic microscope, and the inter-valvular distance and the distance between the valve and the orifice of venous root in the vicinity of the valve were measured. The inter-valvular distance varied with type of the truncus venae, and it varied according to area even in the same truncus venae.     

Pathways of the realization of immunomodulating effects of neurotransmitters

Translated fromByulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 115, N ^o 4, pp. 401–404, April, 1993     

Characterization of sterols of three digenetic trematodes of buffalo

Sterols of three digenetic trematodes were isolated and characterized by infrared and 1H nuclear magnetic resonance spectroscopies, and gas-liquid chromatography and gas chromatography-mass spectrometry. Sterols identified were cholesterol, cholestanol, 24-methylcholesterol, 24-methylcholestanol, 24-ethyl-22-dehydrocholesterol, 24-ethyl-22-dehydrocholestanol, 24-ethylcholesterol and 24-ethylcholestanol.     

Mechanisms of generation of slow components of bioelectric activity in diagnostics of functional state of the gastrointestinal tract

New electrophysiologic devices were used for the diagnostics of the state of excitable structures in the gastrointestinal tract and correction of their motor functions. Bioelectrical and biomechanical activities form the basis of functioning of internal organs. The mechanisms of generation of slow bioelectrical activity that are important for clinical and physiological studies are described. One of these mechanisms is a capacitance parametric transducer converting the energy of contractions into specific electric signals reflecting muscle functions. Another mechanism results from slow oscillations of resting potentials of interrelated excitable cells in large neuromuscular structures of internal organs. The elaborated procedure is efficient for preventing early postoperative paresis of the gastrointestinal tract. Translated fromByulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 128, No. 10, pp. 448–452, October, 1999     

胃小弯侧血管弓的MDCT解剖

目的：研究正常胃小弯侧血管弓及其属支血管的多排螺旋CT表现。方法：回顾性分析51例正常成人的上腹部CT资料,观察胃小弯侧血管弓及其属支血管的显示情况、血管弓形态及其与胃壁的关系。结果：51例均显示胃小弯侧血管弓,血管弓贲门部属支、胃体部属支和幽门部属支分别显示46例、15例和10例;血管弓与胃壁紧邻41例。结论：MDCT检查可良好显示正常胃小弯侧血管弓及其属支血管。     

Assessment of the efficacy of treatment of hemangiomas

Assessment of the aftereffects of cryoexposure and ultrahigh-frequency cryoexposure on hemangioma tissue of various types, cavernous and squamous, showed a higher cryogenic effect in hemangiomatous tissue preexposed to ultrahigh-frequency waves. A quantitative criterion is proposed for assessing the efficacy of the studied methods of exposure. Translated fromByulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 119, N ^o 6, pp. 669–672, June, 1995