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     

502例不孕症患者宫腔镜检查结果分析

目的探讨宫腔镜检查在女性不孕症患者中的应用。方法回顾性分析原发性不孕180例,继发不孕322例患者进行宫腔镜检查的结果,比较不同不孕症的差异。结果1.不孕症中输卵管阻塞为167例（33.27%）,另外子宫内膜炎（24.90%）、子宫内膜息肉（10.76%）、子宫腔粘连（5.18%）、宫颈管肿物（3.98%）和先天性子宫发育异常（3.19%）也是常见原因。2.原发性不孕症中子宫内膜息肉、宫颈管肿物比例明显高于继发性不孕组,子宫内膜炎和输卵管阻塞方面继发性不孕组高于原发性不孕组。3.普通不孕组在子宫腔粘连方面明显低于试管婴儿组,在鞍状子宫等子宫先天性发育异常方面明显高于试管婴儿组。4.进行试管婴儿失败患者中原发性不孕与继发性不孕在宫腔异常分别为43.94%和36.84%,两者在子宫内膜息肉、子宫粘膜下肌瘤、宫腔粘连、宫颈管肿物、子宫内膜炎、先天性子宫发育异常等方面无显著性差异。结论宫腔镜具有创伤小,恢复快,病人无需住院的优点,在女性不孕症临床中有重要作用。     

Mechanisms of action of ligands of potential-dependent sodium channels

Potential-dependent sodium channels play a leading role in generating action potentials in excitable cells. Sodium channels are the site of action of a variety of modulator ligands. Despite numerous studies, the mechanisms of action of many modulators remain incompletely understood. The main reason that many important questions cannot be resolved is that there is a lack of precise data on the structures of the channels themselves. Structurally, potential-dependent sodium channels are members of the P-loop channel superfamily, which also include potassium and calcium channels and glutamate receptor channels. Crystallization of a series of potassium channels showed that it was possible to analyze the structures of different members of the superfamily using the "homologous modeling" method. The present study addresses model investigations of the actions of ligands of sodium channels, including tetrodotoxin and batrachotoxin, as well as local anesthetics. Comparison of experimental data on sodium channel ligands with x-ray analysis data allowed us to reach a new level of understanding of the mechanisms of channel modulation and to propose a series of experimentally verifiable hypotheses.     

Effects of pathogenic action of botulinus toxin of spinal motoneurons of various types

Motoneurons of the lumbosacral region of the spinal cord were studied during local botulinus paralysis. The development of paralysis of the poisoned limb was accompanied by lowering of the membrane potential, the amplitude of the antidromic action potentials and of mono- and polysynaptic EPSPs, and the input resistance, and by an increase in the critical depolarization level of the soma membrane of phasic motoneurons in the affected segments of the spinal cord. The excitability of the tonic motoneurons was substantially unchanged in the course of development of local botulism.A. A. Bogomolets Department of Pathological Physiology, Saratov Medical Institute. (Presented by Academician of the Academy of Medical Sciences of the USSR P. N. Veselkin.) Translated from Byulleten' Éksperimental'noi Biologii i Meditsiny, Vol. 80, No. 11, pp. 21–24, November, 1975.     

人类胚胎体外培养细菌污染12例分析

目的分析胚胎体外培养细菌污染的发生原因及预防措施。方法对中山大学附属第一医院生殖中心10年来胚胎体外培养中发生的12例细菌污染资料进行回顾分析。结果胚胎体外培养污染中,所有培养液滴有污染5例,部分液滴有污染3例,接触配子及胚胎的液滴污染有4例,培养液滴最常见的细菌为大肠埃希菌,污染的来源可能为患者生殖道、手术操作、培养环境及培养操作等。结论严格操作规程,改善培养环境,可能有效减少人类胚胎体外培养中的细菌污染。     

赭曲霉毒素A时间分辨荧光免疫分析法的建立及其考核

采用稀土离子标记技术,应用多克隆抗体建立高灵敏的赭曲霉毒素A(OTA)时间分辨荧光免疫分析法(OTA-TRFIA).以OTA-KLH为免疫原制备抗OTA抗体;OTA与BSA的联结物(OTA-BSA)为固相抗原,与游离OTA共同竞争有限的兔抗OTA抗体;用Eu3 标记的羊抗兔抗体.该方法的灵敏度为0.02μg/L,测量范围为0.02μg/L～400μg/L,批内和批间CV分别为2.6%和5.2%,平均回收率为95.8%,与赭曲霉毒素B对OTA的检测有5.6%交叉反应,而黄曲霉毒素B1及BSA则没有交叉反应.不同时间进行的OTA-TRFIA的ED80、ED50、ED20效应点值分别为0.2μg/L、1.0μg/L和5.3μg/L.研究表明,OTA-TRFIA是目前OTA检测中最灵敏的方法之一,该分析方法稳定性好、可测范围宽,具有很好的应用前景.     

侧脑室注射链脲佐菌素对大鼠海马神经元突触的影响

为观察链脲佐菌素(streptozotocin,STZ)双侧侧脑室注射对大鼠海马神经元突触的影响,本研究将Wistar大鼠随机分为对照组和模型组,模型组大鼠分别于第1、3d双侧侧脑室重复注射STZ3mg/kg,对照组以人工脑脊液代替STZ。21d后,取大鼠海马,免疫组织化学染色及Western blotting方法观察突触素、活性调节细胞骨架相关蛋白(activity-regulated cytoskeletal-associatedprotein,Arc)的表达;电镜观察海马CA1区神经元突触超微结构的改变。结果显示:与对照组相比,模型组大鼠海马内突触素蛋白表达显著减少,而Arc蛋白表达显著增多;模型组海马CA1区神经毡内突触结构异常,突触小泡聚集增多。以上结果提示:脑室注射STZ可影响大鼠海马突触相关蛋白的表达,引起突触超微结构异常,干扰了神经元突触信号的传导。     

瘙痒发生的神经生理学研究进展

瘙痒是机体生理状态下自我保护的一种反应机制，也是许多系统性疾病和皮肤疾病的症状之一，目前其产生的具体机制尚不十分清楚。瘙痒有特异的神经传导通路，表明瘙痒和疼痛是不同的独立的感觉形式。近年来的研究发现，传统的瘙痒介质，如组胺、血清素、乙酰胆碱等，通过刺激C 类神经纤维产生瘙痒；此外，在皮肤感觉神经纤维也发现有阿片样肽、香草基衍生物等瘙痒介质的受体存在，提示这些介质可能通过与皮肤感觉神经纤维的受体结合介导瘙痒。     

Effect of conditions of culture on quantitative assessment of viability of living tissues

The viability of tissue explants of mouse kidneys, estimated quantitatively by growth in plasma-free culture, was shown to depend on several factors connected with the conditions of culture. The effect of methods of treatment of the serum, pH of the medium, and the character of distribution of the tissue explant during culture, the size of the explants, and the firmness of attachment of the tissue fragments to the substrate on this index was demonstrated.Problem Laboratory, Arkhangel'sk Medical Institute. (Presented by Academician of the Academy of Medical Sciences of the USSR A. P. Avtsyn.) Translated from Byulleten' Éksperimental'noi Biologii i Meditsiny, Vol. 86, No. 11, pp. 629–631, November, 1978.     

超声测量胃液量用于急诊手术患者呕吐发生的预测

目的　在非创伤条件下,利用超声测量胃窦部横截面积（cross-sectional area,CSA）并计算胃液量,预测呕吐发生情况。 方法 (1)患者取半卧位,使用超声系统,腹部成像模式,换能器C60x/5-2MHz凸阵探头,扫描上腹部（剑突下）旁矢状平面,以肝左叶、腹主动脉作为体内标志物,顺时针或逆时针轻微旋转探头,以获得清晰的胃窦图像。在超声图像中测量胃窦部沿身体头尾方向及前后方向的最大直径（D1和D2）,计算CSA,即CSA=π×D1×D2/4。收集87例急诊手术患者的胃窦部CSA并根据Bouvet回归方程计算胃液量。(2)为进一步判断超声测量胃窦部CSA计算胃液量对呕吐的预测,另收集113例急诊手术患者胃窦部CSA并计算胃液量,按胃液量将患者分为3组：A组：胃液量≤0.4ml/㎏;B组：0.4ml/㎏<胃液量≤0.8ml/㎏;C组：胃液量＞0.8 ml/kg。 结果　超声测量患者胃窦部CSA具有可行性;急诊手术进行麻醉诱导前测量的胃窦部CSA与胃液体积存在正相关,且胃窦部CSA可用于判断围手术期呕吐发生的机率;呕吐误吸危险性标准为胃液残留量>0.8 ml/kg。 结论 利用超声测量胃窦横截面积（CSA）并计算胃液量,以此来预测呕吐发生是可行的,有望在今后应用于急诊手术中。     

Effect of route of antitoxin administration on efficacy of treatment of experimental tetanus

The efficacy of treatment with Diaform-3 antitoxin, given by either intracisternal or intralumbar injection in a dose of 400 i.u./kg, was compared in experiments on 100 rabbits with ascending, hematogenous, and cerebral tetanus caused by injection of 1 c.l.d. of tetanus toxin. Intracisternal injection of the antitoxin was found to be three times more effective than intralumbar (the proportion of animals cured was 31.4 and 10.2% respectively). The latter was effective only in animals with ascending tetanus, evidently because the portal of entry of the toxin into the CNS was along the peripheral nerves of the hind limbs.Central Research Laboratory, L'vov Medical Institute. (Presented by Academician of the Academy of Medical Sciences of the USSR A. M. Chernukh.) Translated from Byulleten' Éksperimental'noi Biologii i Meditsiny, Vol. 86, No. 8, pp. 212–213, August, 1978.