毫米波辐照对小鼠EMT6乳腺癌细胞增殖活性的影响

作者用频率３６．１１ＧＨｚ，功率密度分别为１，３，５，７ｍＷ／ｃｍ＾２的毫米波辐照培养的小鼠ＥＭＴ６乳腺癌细胞，观察对其增生活性的影响。结果发现，５或７ｍＷ／ｃｍ＾２功率密度照射１５ｍｉｎ后，细胞增殖数目少于对照组，照射３０ｍｉｎ后，细胞的克隆形成数目少于对照组及１，３ｍＷ／ｃｍ＾２照射组。７ｍＷ／ｃｍ＾２照射后２４ｈ时，细胞的ＡｇＮＯＲ颗粒数虽多于对照组和其他照射组，但颗粒体积缩小。照射组细胞超     

不同剂量紫外线照射后对浓缩血小板保存中细胞因子含量 …

目的：研究不同剂量Ｂ波段紫外线（ＵＶＢ）照射后对浓缩血小板保存过程中细胞因子含量的影响。材料与方法：采用富含血小板血浆（ＰＲＰ）法制备浓缩缩血小板,并分别以１．５Ｊ／ｃｍ＾２、２Ｊ／ｃｍ＾２、２．５Ｊ／ｃｍ＾２ＵＶＢ进行照射后,于标准条件下保存５天,间隔取样用ＥＬＩＳＡ方法检测ＩＬ－１β、ＩＬ－６、ＩＬ－８及ＴＮＦα含量结果浓缩血小板在保存过程中,所检测的四种细胞因子含量随保存时间的延长均逐渐升高     

体外阻断GR功能对鸡脾淋巴细胞活性及Dex免疫抑制的影响

用地塞米松（Ｄｅｘ）和ＲＵ４８６分别或联合与鸡淋巴细胞，ＣｏｎＡ－一起培养，检测了淋巴细胞掺入＾３Ｈ－胸苷（＾Ｈ－ＴｄＲ）量的变化，１０＾－５和１０＾－６ｍｏｌ／ＬＲＵ４８６可抑制淋巴细胞掺入＾３Ｈ－ＴｄＲ（Ｐ〈０．０１），而１０＾－７ｍｏｌ／Ｌ则无明显影响（Ｐ〉０．０５）１０＾－５，１０＾－６和１０＾－７ｍｏｌ／ＬＤｅｘ地淋巴细胞掺入＾３Ｈ－ＴｄＲ有明显的抑制作用（Ｐ〈０．０１），１０＾－５ｍｏ     

微波照射小鼠对微核的影响

微波辐射是否可引起遗传物质的改变，尚存在争议。应用２４５０ＭＨ２微波，分别一次全身照射ＢＡＬＢ／ｃ小鼠３００，６００，９００ｍＷ／ｃｍ＾２，以多核淋巴细胞检测法，观察了微波辐射对黄嘌呤－鸟嘌呤核糖转移酶基因的影响。结果表明，９００ｍＷ／ｃｍ＾２照射组和对照间出现非常显著的差异（Ｐ〈０．０１）。证明微波辐射对遗传物质的影响是明确存在的。     

不同剂量紫外线照射对血小板活化的影响

探讨经不同剂量Ｂ波段紫外线（ＵＶＢ）照射后对浓缩血小板在保存过程中血小板活化的影响。用ＰＲＰ法制备浓缩血小板,采用１ Ｊ／ｃｍ ２、１．５ Ｊ／ｃｍ ２、２ Ｊ／ｃｍ ２ＵＶＢ进行照射,常规保存５ 天,间隔取样分别用ＲＩＡ、ＥＬＩＳＡ 方法检测血小板表面及血浆中Ｐ－Ｓｅｌｅｃｔｉｎ 的含量。结果表明：１ Ｊ／ｃｍ ２、１．５ Ｊ／ｃｍ ２ＵＶＢ照射组与对照组一样,于保存３ 天后,血小板表面Ｐ－Ｓｅｌｅｃｔｉｎ 分子数及血浆中Ｐ－Ｓｅｌｅｃｔｉｎ 浓度明显升高（Ｐ＜ ０．０５）,在保存５ 天后含量进一步升高,差异更为明显（Ｐ＜ ０．００１）。２ Ｊ／ｃｍ ２ＵＶＢ照射组于保存１ 天后血小板表面Ｐ－Ｓｅｌｅｃｔｉｎ 分子数及血浆中Ｐ－Ｓｅｌｅｃｔｉｎ 浓度即明为升高（Ｐ＜ ０．０５）,在保存３ 天后,差异更为显著（Ｐ＜ ０．００１）。上述结果提示：以小于２ Ｊ／ｃｍ ２ ＵＶＢ照射在５ 天的保存期内不会引起明显的血小板活化,而大于２ Ｊ／ｃｍ ２ ＵＶＢ照射会促进血小板的活化,不利于血小板的保存     

1，25双羟维生素D3对成骨样细胞骨架和基因表达的影响

用荧光免疫法研究了１，２５双羟基维生素Ｄ３对大鼠成骨样细胞（ＲＯＳ１７／２．８）细胞骨架的影响和用斑点杂交技术研究了１，２５（ＯＨ）２Ｄ３对人成骨样细胞（ＯＳ－７３２）基因表达的影响。结果表明：在１０＾－７ｍｏｌ／Ｌ１，２５（ＯＨ）２Ｄ３连续作用４ｄ后，大鼠ＲＯＳ１７／２．８细胞的微管蛋白和波形纤维蛋白明显改善，纤粘蛋白荧光明显增强。而在１，２５（ＯＨ）２Ｄ３作用前后ＯＳ－７３２细胞ｃ－ｍｙｃ和ｍ     

大马蹄蝠中脑上,下丘的功能形态学研究——氚标记的2—脱氧核糖法

用定量氚标记的２－＾３Ｈ脱氧核糖法（＾３Ｈ－２－Ｄｅｏｘｙｇｌｕｃｏｓｅ，＾３Ｈ－２－ＤＧ）和电生理学技术，研究了大马蹄蝠中脑上，下丘的听反应特征，电生理实验表明：下丘听反应的最佳频率为５９ＫＨｚ，从下丘中央核腹侧部到下丘表面，其频率从６２ＫＨｚ依次递减到３５ＫＨｚ具音频组构特点，＾３Ｈ－ＤＧ法结果表明：（１）上丘对５９ＫＨｚ６５ｄＢ５９ＫＨｚ，２０ｄＢ，２９．５ＫＨｚ，２０ｄＢ三组声刺激的反应处     

类风湿关节炎患者外周血及滑膜液Ⅹ型胶原反应性B细胞检测及其特异性分析

目的：探讨类风湿关节炎（ＲＡ）患者体内是否存在抗Ⅹ型胶原Ｂ细胞反应。方法：以ＥＬ４ＯＵｒＢＵｒ／ｒＩＬ２／ＰＭＡ作为刺激系统,通过酶联斑点技术检测抗Ⅹ型胶原免疫球蛋白分泌Ｂ细胞（ａｎｔｉＨＣⅩＩＳＣ）频率。结果：２８例ＲＡ患者滑膜中１１例出现ａｎｔｉＨＣⅩＩＳＣ,而对照组骨性关节炎（ＯＡ）患者滑膜液中则未检测到ａｎｔｉＨＣⅩＩＳＣ。ＲＡ患者外周血及滑膜液ＣＤ１９＋及ＣＤ２０＋细胞百分率于刺激前后无明显变化,但ＣＤ５＋Ｂ细胞百分率却明显增加,外周血刺激前后分别为１７．０±６．０,２７．０±９．０,滑膜液分别为８．０±３．２,１６．０±６．０。结论：（１）ＲＡ患者体内存在抗Ⅹ型胶原Ｂ细胞反应,（２）ＣＤ４＋ＥＬ４ＯＵｒＢＵｒ／ｒＩＬ２／ＰＭＡ是激活ＣＤ５＋自身抗体产生Ｂ细胞的有效方法。     

Nd：YAG温热疗法与Ar^＋激光PDT联合对小鼠S180肉瘤DNA含 …

目的 本文研究了Ｎｄ：ＹＡＧ激光温热疗法与Ａｒ＾＋激光光动力学疗法联合对小鼠Ｓ１８０肉瘤ＤＮＡ含量的影响。材料与方法 实验分为激光温热疗法组,Ａｒ＾＋激光光动力学组,联合作用组及对照组等四组,激光温热疗法用Ｎｄ：ＹＡＧ激光照射肿瘤,功率密度约为４２４ｍＷ／ｃｍ＾２,控制肿瘤边缘温度为４３℃照射３０ｍｉｎ;Ａｒ＾＋光动力学疗法为激光照射前２４小时小鼠腹腔注射ＨｐＤ（１０ｍｇ／ｋｇ）以功率为１５０ｍＷ     

人绒毛膜促性腺激素对甲状腺细胞cAMP生成的影响

采用细胞培养方法，研究人绒毛膜促性腺激素（ｈＣＧ）对甲状腺细胞ｃＡＭＰ生成的调节作用。结果显示：在１０￣１０＾４Ｕ／Ｌ的剂量区间，ｈＣＧ可明显刺激甲状腺细胞释放ｃＡＭＰ，ｈＣＧ浓度与ｃＡＭＰ产值之间存在明显的量效依赖关系。１０＾５Ｕ／Ｌ的ｈＣＧ亦显著促进ｃＡＭＰ的分泌，但其刺激强度低于１０＾４Ｕ／Ｌ的ｈＣＧ。提示ｈＣＧ具有类似ＴＳＨ的作用，是孕期母体甲状腺功能的重要调节因子。     

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