氦—氖激光照射对孔雀鱼乳酸脱氢酶等的作用效应

本实验使用氦氖激光采用不同的处理时间照射孔雀鱼的仔鱼,分析其ＬＤＨ,ＩＤＨ及过氧化物酶的活性变化,实验表明：氦氖激光照射仔鱼可引起上述酶的活性出现不同程度的提高     

低强度氦氖激光对缺血性疾病患者红细胞变形性影响的临床研究

目的：探讨低强度氦氖激光对临床中风等缺血性疾病患者红细胞变形能力影响情况。方法：临床采集不同缺血性疾病患者新鲜血样,检测各组红细胞变形能力情况。对中风患者血样进一步分组,给予不同剂量的氦氖激光处理,讨论临床低强度氦氖激光量效关系,探讨具有临床疗效的有效剂量情况。结果：各疾病病组红细胞变形能力较正常对照组红细胞变形能力为低;缺血疾病组样品经低强度氦氖激光照射后,其红细胞变形能力较未经激光照射组有显著不同。结论：显示体外人红细胞变形能力因患者疾病情况、红细胞状态、低强度氦氖激光临床治疗输出功率等因素有不同。     

氦—氖激光照射对孔雀鱼乳酸脱氢酶的等的作用效应

本实验使用氖激光采用不同的处理时间照射孔雀鱼的仔鱼,分析其ＬＤＨ,ＩＤＨ及过氧化物酶的活性变化,实验表明：氦氖激光照射仔鱼可引起上述酶的活性出现不同程度的提高。     

莫匹罗星联合氦氖激光照射治疗新生儿脐炎的临床疗效研究

为探讨莫匹罗星联合氦氖激光照射治疗新生儿脐炎的临床疗效,本研究选取了2013至2018年新生儿脐炎患儿86例,通过对照研究,按治疗方法不同分为观察组(莫匹罗星+氦氖激光照射)与对照组(莫匹罗星)各43例,观察两组患儿新生儿脐炎愈合时间及不良反应发生情况。试验发现观察组平均愈合时间为(4. 186±0. 194) d,总有效率为100%;对照组平均愈合时间为(5. 189±0. 238) d,总有效率为86%;观察组愈合时间显著高于对照组(P 0. 05)。两组患儿在治疗期间均未发现皮肤红疹等不良事件。研究结果显示,莫匹罗星联合氦氖激光照射治疗新生儿脐炎的临床疗效确切,安全性高。     

蝮蛇抗栓酶治疗白塞氏病3例报告

本文报告了应用蝮蛇抗栓酶治疗３例白塞氏病的临床疗效,初步认为,优于其它药物。治疗方法是：蝮蛇抗栓酶３～４支加入２５０ｍｌ～５００ｍｌ液体中静点,每日１次,每２０天为一疗程,中间间隔３～７天,连用４～６个疗程。此后每半年巩固治疗２个疗程。蝮蛇抗栓酶治疗该病的可能机理是活血化瘀和免疫调节作用。     

氦氖激光光针在儿科的应用

近些年来,激光在医学领域里的应用日益广泛,已成为临床治疗的重要手段之一。国内外曾有不少学者先后利用低功率激光照射人体穴位以治疗疾患,来替代用传统的金属针针刺穴位的方法。在小儿内科,使用氦氖激光光针照射穴位系无创伤性疗法,且无副作用,现已逐渐应用于小儿内科临床,受到医     

磁疗法治疗臀部注射硬结59例报告

臀部注射硬结是一种常见病症,我们应用磁疗法治疗臀部注射后硬结５９例,收到明显效果,现报告如下。一般资料５９例患者,男２６例、女３３例。年龄４个月～３．５岁６例,８～１５岁９例,２０～３０岁２２例,３０～４０岁４例,４０～５０岁８例,５０～６０岁６例,６０～７０岁１例,７０～８０岁１例,成年２例。治疗方法电磁法：采用电磁疗机治疗时将磁头置于治疗部位;每次治疗时间１５～２０分钟,每日治疗１次,６～１２次为一疗程。脉冲电磁疗机磁头外径１３０mm,脉冲磁场强度０．２～０．８T,脉冲持续时间２２ms,频率４０…     

氦氖激光对离体小鼠腹腔巨噬细胞功能的影响

为探索低功率激光照射治疗的机理,本实验用氦氖激光照射离体小白鼠腹腔巨噬细胞观察其吞噬鸡红细胞折功能。当照射１５分钟时,巨噬细胞蚕噬功能达到最大值,以后开始下降,照射至４０分时,巨噬细胞吞噬功能下降至对照组以下,出现抑制现象。     

辐射诱导细胞凋亡中胱冬肽酶—3基因的活性

先前的研究发现胱科肽酶－３基因参与辐射诱发Ｕ９３７细胞凋亡,在此基础上,进一步分析了辐射诱发细胞凋亡进程中胱冬肽酶－３活性变化及其激活方式。结果发现：随着一时间的眨续,胱冬肽酶－３酶切活性逐步增高,于照后６ｈ达到最高。但ＲＮＡ印迹显示：照射鲺未照射细胞相比,胱冬肽酶－３ｍＲＮＡ水平并无改变。而免疫印迹发现：随着凋亡的进展,胱冬肽酶－３活性酶的亚基Ｐ２０的产生愈来愈多,并且从照后３ｈ起,凋亡细胞中还     

低能量氦氖激光照射对荷瘤小鼠T淋巴细胞增殖反应的影响

目的：本文研究低能量氦氖激光照射荷瘤小鼠,观察对荷瘤Ｔ淋巴细胞增殖反应的影响。结果：ＢＡＬＢ／Ｃ雄性小鼠腹腔接种Ｓ１８０接种后,进行激光照射小鼠内眼角,测定正常对照组、肿瘤对照组和７．３３、１１．００、１４．６７、２２．００Ｊ／ｃｍ＾２和２９．３３Ｊ／ｃｍ＾２五个剂量激光照射组小鼠的Ｔ淋巴细胞增殖反应,结果表明１１．００Ｊ／ｃｍ＾２、１４．６７Ｊ／ｃｍ＾２、２２．００Ｊ／ｃｍ＾２剂量的氦氖激光照射     

Investigation of the mechanism of temperature sensitivity of the electroreceptors of ampullae of lorenzini

In experiments on Black Sea skates (Raja clavata), the potential of the receptor epithelium of the ampullae of Lorenzini and spike activity of single nerve fibers connected to them were investigated during electrical and temperature stimulation. Usually the potential within the canal was between 0 and –2 mV, and the input resistance of the ampulla 250–400 k. Heating of the region of the receptor epithelium was accompanied by a negative wave of potential, an increase in input resistance, and inhibition of spike activity. With worsening of the animal's condition the transepithelial potential became positive (up to +10 mV) but the input resistance of the ampulla during stimulation with a positive current was nonlinear in some cases: a regenerative spike of positive polarity appeared in the channel. During heating, the spike response was sometimes reversed in sign. It is suggested that fluctuations of the transepithelial potential and spike responses to temperature stimulation reflect changes in the potential difference on the basal membrane of the receptor cells, which is described by a relationship of the Nernst's or Goldman's equation type.I. P. Pavlov Institute of Physiology, Academy of Sciences of the USSR, Leningrad. I. M. Sechenov, Institute of Evolutionary Physiology and Biochemistry, Academy of Sciences of the USSR, Leningrad. Pacific Institute of Oceanology, Far Eastern Scientific Center, Academy of Sciences of the USSR, Vladivostok. Translated from Neirofiziologiya, Vol. 12, No. 1, pp. 67–74, January–February, 1980.     

Principles of organization and evolution of systems of regulation of functions

Evolution of living organisms is closely connected with evolution of structure of the system of regulations and its mechanisms. The functional ground of regulations is chemical signalization. As early as in unicellular organisms there is a set of signal mechanisms providing their life activity and orientation in space and time. Subsequent evolution of ways of chemical signalization followed the way of development of delivery pathways of chemical signal and development of mechanisms of its regulation. The mechanism of chemical regulation of the signal interaction is discussed by the example of the specialized system of transduction of signal from neuron to neuron, of effect of hormone on the epithelial cell and modulation of this effect. These mechanisms are considered as the most important ways of the fine and precise adaptation of chemical signalization underlying functioning of physiological systems and organs of the living organism     

Analysis of mechanism of formation of epidemic variant of disease activator

Pre-epidemic circulation of a multivariate agent is simulated. An assumption on the possibility of forming a new variant as a combination of properties of circulating variants is examined.     

Effect of composition of cellular lipids of formation of nonspecific antibiotic resistance of alkanotrophic rhodocoocci

The antibiotic resistance and lipid composition of rhodococci grown in rich organic media with gaseous or liquid n-alkanes were studied. Hydrocarbon-grown rhodococci exhibited an increased resistance to a wide range of antibiotics (aminoglycosides, linkosamides, macrolides, beta-lactams, and aromatic compounds). The enhanced antibiotic resistance of rhodococci grown on n-alkanes correlated with an increased content of total cell lipids (up to 14-28%) and saturated straight-chain fatty acids (C16:0, C18:0, C21:0) and was accompanied by the appearance of cardiolipin and phosphatidylglycerol in cells. These lipid compounds were supposed to promote the formation of nonspecific antibiotic resistance in rhodococci by decreasing the permeability of their cell envelope to antibiotics.     

六种藓类植物茎的比较解剖学研究

通过对6种藓类植物,即褶叶青藓(Brachythecium salebrosum(Web.et Mohr.)B.S.G.)、湿地匐灯藓(Plagiomnium acutum(Lindb.)Kop.)、侧枝匐灯藓(Plagiomnium maximoviczii(Lindb.)Kop.)、大凤尾藓(Fissidensnobilis Griff.)、大羽藓(Thuidium cymbifolium(Doz.et Molk.)B.S.G.)和大灰藓(Hypnum plumaeforme Wils.)嫩茎和老茎的石蜡切片和显微观察发现,同一藓类植株的嫩茎和老茎,茎结构稳定,不同种藓类植物茎横切面具有不同特征.植物体茎横切面形状、表层细胞的层数、细胞大小和细胞壁厚薄、皮层细胞大小和形状、中轴的有无以及比例等特征可以作为藓类植物的分科分类依据之一.     

A quantitative estimation of degree of purity of preparations of subcellular structures

A method of mathematical treatment of the results of the analysis of enzymic activity of fractions has been suggested, allowing a quantitative estimation of both the degree of purity of fractions and the yield. Using this method the preparation of mitochondria, microsomes and lysosomes have been characterized. The method may also be used to elucidate the localization of some, not strictly organelle-specific enzymes of different subcellular structures.     

Overview of mechanisms of action of lycopene

Dietary intakes of tomatoes and tomato products containing lycopene have been shown to be associated with decreased risk of chronic diseases such as cancer and cardiovascular diseases in numerous studies. Serum and tissue lycopene levels have also been inversely related to the risk of lung and prostate cancers. Lycopene functions as a very potent antioxidant, and this is clearly a major important mechanism of lycopene action. In this regard, lycopene can trap singlet oxygen and reduce mutagenesis in the Ames test. However, evidence is accumulating for other mechanisms as well. Lycopene at physiological concentrations can inhibit human cancer cell growth by interfering with growth factor receptor signaling and cell cycle progression specifically in prostate cancer cells without evidence of toxic effects or apoptosis of cells. Studies using human and animal cells have identified a gene, connexin 43, whose expression is upregulated by lycopene and which allows direct intercellular gap junctional communication (GJC). GJC is deficient in many human tumors and its restoration or upregulation is associated with decreased proliferation. The combination of low concentrations of lycopene with 1,25-dihydroxyvitamin D3 exhibits a synergistic effect on cell proliferation and differentiation and an additive effect on cell cycle progression in the HL-60 promyelocytic leukemia cell line, suggesting some interaction at a nuclear or subcellular level. The combination of lycopene and lutein synergistically interact as antioxidants, and this may relate to specific positioning of different carotenoids in membranes. This review will focus on the growing body of evidence that carotenoids have unexpected biologic effects in experimental systems, some of which may contribute to their cancer preventive properties in models of carcinogenesis. Consideration of solubility in vitro, comparison with doses achieved in humans by dietary means, interactions with other phytochemicals, and other potential mechanisms such as stimulation of xenobiotic metabolism, inhibition of cholesterogenesis, modulation of cyclooxygenase pathways, and inhibition of inflammation will be considered. This review will point out areas for future research where more evidence is needed on the effects of lycopene on the etiology of chronic disease.     

Formulation of Statistical Equation of Motion of Blood

A general form of the statistical equation of motion of the blood is derived by averaging the motion of individual elements of the blood over a small volume in space. This equation can be transformed into an explicit form to find the constitutive equations of the blood provided the detailed motion of the plasma in some neighborhood of a suspended particle is known. As a demonstration of such transformation, the general form of the statistical equation of motion is applied to the suspension of sphere with a very low concentration to find the effective viscosity.     

医疗机构合理用药评价模型的构建研究

目的 针对医疗机构的合理用药水平进行评价研究。方法 根据医疗机构合理用药的具体要求,构建医疗机构合理用药评价指标体系,采用基于模糊群决策的方法和多指标评价分析法构建医疗机构合理用药评价模型。结果 构建了基于模糊群决策的医疗机构合理用药评价模型,并通过实例分析证明了评价模型的可行性。结论 建立的基于模糊群决策的医疗机构合理用药评价模型能够对医疗机构的合理用药水平进行科学评价,为提高医疗机构合理用药水平奠定基础。