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ATP-sensitive potassium transport in rat brain mitochondria is highly sensitive to mK(ATP) channels openers: a light scattering study 大鼠脑线粒体中ATP敏感的钾转运对mK(ATP)通道打开剂高度敏感:光散射研究
Q4 Biochemistry, Genetics and Molecular Biology Pub Date : 2020-11-13 DOI: 10.15407/ubj92.05.005
Akopova Ov, L. Kolchinskaya, V. I. N. Kolchinskaya, A. Kolchinskaya, L. V. B. Kolchinskaya
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引用次数: 0
Tautomeric hypothesis: to be or not to be? Quantum-mechanical verdict 互变异构假说:存在还是不存在?量子力学判决
Q4 Biochemistry, Genetics and Molecular Biology Pub Date : 2020-09-10 DOI: 10.15407/ubj92.04.124
O. Brovarets’, D. Hovorun
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引用次数: 0
The influence of coordinative tartrate and malatogermanate compounds on the activity of ?-L-rhamnosidase preparations from Penicillium tardum, Eupenicillium erubescens and Cryptococcus albidus 酒石酸盐和苹果果酸盐配位化合物对延迟青霉、绿青霉和白隐球菌制备的- l -鼠李糖苷酶活性的影响
Q4 Biochemistry, Genetics and Molecular Biology Pub Date : 2020-09-10 DOI: 10.15407/ubj92.04.085
О. V. Gudzenko, L. Varbanets, І. I. Seifullina
recently enzyme preparations of microbial origin become increasingly important in different industries. Preparations of α-L-rhamnosidase are used in the pharmaceutical industry as well as in scientific work as a tool for analytical research. We have obtained purified α-L-rhamnosidase preparations from Penicillium tardum, eupenicillium erubescens and Cryptococcus albidus microorganism strains which are effective enzyme producers. the aim of the study was to estimate the ability of germanium coordination compounds to enhance enzyme catalytic activity. the effects of 11 heterometal mixed ligand tartrate (malate-)germanate compounds at 0.01 and 0.1% concentration on the activity of α-L-rhamnosidase preparations from Penicillium tardum IMV f-100074, eupenicillium erubescens and Cryptococcus albidus 1001 were studied at 0.5 and 24 h exposition. the inhibitory effect of [ni(bipy)3]4[{Ge2(oh)2(tart)2}3Cl2]·15h2 on P. tardum α-L-rhamnosidase was revealed. all studied compounds except [CuCl(phen)2][Ge(oh)(hMal)2] were shown to increase activity of P. tardum α-L-rhamnosidase at a longer term of exposition. activity of e. erubescens α-L-rhamnosidase was shown to be stimulated by d-metal cation-free compounds. C. albidus α-L-rhamnosidase occurred to be insensitive to all compounds studied.
近年来,微生物来源的酶制剂在不同的行业中变得越来越重要。α-L-鼠李糖苷酶的制剂在制药工业和科学工作中被用作分析研究的工具。从产酶能力强的晚青霉(Penicillium tardum)、厄氏真青霉(eupenicillium erubescens)和白隐球菌(Cryptococcus albidus)菌株中获得了纯化的α-L-鼠李糖苷酶制剂。本研究的目的是评估锗配位化合物增强酶催化活性的能力。研究了0.01%和0.1%浓度的11种杂金属混合配体酒石酸(苹果酸)锗酸盐化合物在暴露0.5和24小时时对产自晚青霉菌IMV f-100074、厄氏真青霉和白色隐球菌1001的α-L-鼠李糖苷酶制剂活性的影响。结果表明[ni(bipy)3]4[{Ge2(oh)2(tart)2}3Cl2]·15h2对迟发P.tardumα-L-鼠李糖苷酶有抑制作用。除[CuCl(phen)2][Ge(oh)(hMal)2]外,所有研究的化合物都显示在较长的暴露时间内增加了P.tardumα-L-鼠李糖苷酶的活性。结果表明,无d-金属阳离子的化合物可刺激芥子菌α-L-鼠李糖苷酶的活性。白念珠菌α-L-鼠李糖苷酶对所研究的所有化合物都不敏感。
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引用次数: 6
Standing on the shoulders of giants: James Watson, Francis Crick, Maurice Wilkins, Rosalind Franklin and the birth of molecular biology 站在巨人的肩膀上:詹姆斯·沃森、弗朗西斯·克里克、莫里斯·威尔金斯、罗莎琳德·富兰克林和分子生物学的诞生
Q4 Biochemistry, Genetics and Molecular Biology Pub Date : 2020-09-10 DOI: 10.15407/ubj92.04.154
T. Danylova, S. Komisarenko
In the 20th century, DNa became a magnet, attracting representatives of various sciences. Prominent researchers competed among themselves to discover the structure of DNa and to explain the mechanisms that determine our “natural fate”, i.e., our heredity. an american chemist, biochemist, chemical engineer linus Pauling, a British physicist and molecular biologist maurice Wilkins, a British chemist, biophysicist, and X-ray crystallographer rosalind Franklin, an american geneticist, molecular biologist, zoologist James Watson, a British molecular biologist, biophysicist, and neuroscientist Francis Crick were among them. They searched for the scientific explanation for the enigma of life hidden in DNA. An accurate description of DNA double-helical structure belongs to James Watson and Francis Crick. However, the missing pieces of the puzzle were elaborated by Rosalind Franklin, who was not given enough credit for her dedicated scientific work. Unlike her, Francis Crick, James Watson, and maurice Wilkins were awarded the Nobel Prize in Physiology or Medicine 1962 for their discoveries concerning the molecular structure of nucleic acids and its significance for information transfer in living material. Whatever the DNA story is, it shows that all great scientific discoveries are not made from scratch. The immense number of people have contributed to the development of science and literally every researcher stands on the shoulders of giants, while the idea itself is in the air. The discovery of the structure of DNA became a cornerstone for the new scientific paradigm – biology acquired a molecular and biochemical basis.
在20世纪,DNa就像一块磁铁,吸引着各种科学的代表。杰出的研究人员相互竞争,以发现DNa的结构,并解释决定我们“自然命运”的机制,即我们的遗传。美国化学家、生物化学家、化学工程师莱纳斯·鲍林,英国物理学家、分子生物学家莫里斯·威尔金斯,英国化学家、生物物理学家和x射线晶体学家罗莎琳德·富兰克林,美国遗传学家、分子生物学家、动物学家詹姆斯·沃森,英国分子生物学家、生物物理学家和神经学家弗朗西斯·克里克。他们寻找隐藏在DNA中的生命之谜的科学解释。对DNA双螺旋结构的准确描述属于詹姆斯·沃森和弗朗西斯·克里克。然而,罗莎琳德·富兰克林(Rosalind Franklin)阐述了这个谜题中缺失的部分,她的敬业科学工作没有得到足够的赞誉。与她不同的是,弗朗西斯·克里克、詹姆斯·沃森和莫里斯·威尔金斯因发现核酸的分子结构及其对生物物质信息传递的重要性而获得1962年诺贝尔生理学或医学奖。无论DNA的故事是什么,它都表明,所有伟大的科学发现都不是从零开始的。无数的人为科学的发展做出了贡献,实际上每个研究人员都站在巨人的肩膀上,而思想本身却在空中。DNA结构的发现成为新的科学范式的基石——生物学获得了分子和生化基础。
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引用次数: 8
The contribution of Nobel prize laureates to research of the protein structure: J. Sumner, J. Northrop, W. Stanley, L. Pauling, F. Sanger, M. Perutz, J. Kendrew 诺贝尔奖得主对蛋白质结构研究的贡献:J. Sumner, J. Northrop, W. Stanley, L. Pauling, F. Sanger, M. Perutz, J. Kendrew
Q4 Biochemistry, Genetics and Molecular Biology Pub Date : 2020-09-10 DOI: 10.15407/ubj92.04.127
V. M. Danilova, R. P. Vynogradova, S. Komisarenko
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引用次数: 4
Hypoglycemic and hypolipidemic effects of Corchorus olitorius leaves as a food supplement on rats with alloxan-induced diabet 紫草叶作为食物补充剂对四氧嘧啶糖尿病大鼠的降血糖和降脂作用
Q4 Biochemistry, Genetics and Molecular Biology Pub Date : 2020-09-10 DOI: 10.15407/ubj92.04.063
A. Nduka, A. Oluwatoyin, A. Temitope, O. Odutola
Corchorus olitorius is a species of shrub in the family malvaceae known to have rich sources of chemical compounds. the leaves of this plant are locally consumed as a vegetable and as a remedy in Africa, middle east and Southern Asia. this study was designed to evaluate the hypoglycemic and hypolipidemic effects of C. olitorius leaves sample given for 14 days as a food supplement to rats with alloxan-induced diabetes. Twenty one male albino rats weighing 150-200 g were randomly assigned into three groups: 1 – control rats; 2 – diabetic rats; 3 – diabetic rats fed with C. olitorius leaves as supplement. Phytochemical analysis of C. olitorius leaves ethanolic extract revealed the presence of alkaloids, anthraquinone, cardiac glycosides, saponins, tannins, phenols, phlobatannins and flavonoids. Diabetic rats fed with C. olitorius leaves as a supplement were shown to have significantly (P < 0.01) decreased plasma glucose, LDL-cholesterol, total cholesterol and triglycerides levels when compared with untreated diabetic rats. The findings from this study indicated that C. olitorius leaf possesses hypoglycemic and hypolipidemic properties.
锦葵是锦葵科的一种灌木,具有丰富的化学物质来源。这种植物的叶子在当地被当作蔬菜食用,在非洲、中东和南亚被当作一种药物。本研究旨在评价四氧嘧啶诱导的糖尿病大鼠14天的降糖和降血脂作用。选取体重150 ~ 200 g的雄性白化大鼠21只,随机分为3组:1组为对照组;2 -糖尿病大鼠;3 .糖尿病大鼠以小檗叶作为补充饲料。植物化学分析结果显示,石竹叶乙醇提取物中含有生物碱、蒽醌类、心苷类、皂苷类、单宁类、酚类、酞菁类和黄酮类化合物。糖尿病大鼠血浆葡萄糖、低密度脂蛋白胆固醇、总胆固醇和甘油三酯水平显著低于未处理的糖尿病大鼠(P < 0.01)。本研究结果表明,山茱萸叶具有降血糖和降血脂的作用。
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引用次数: 5
Crassula genus plants response to temperature stress depends on anatomical structure and antioxidant system 负鼠属植物对温度胁迫的反应取决于解剖结构和抗氧化系统
Q4 Biochemistry, Genetics and Molecular Biology Pub Date : 2020-09-10 DOI: 10.15407/ubj92.04.111
N. Nuzhyna, M. Gaidarzhy, A. Holubenko
Plant adaptation to climate conditions of certain territories has emerged within the course of evolution, shows at all organizational levels from morphological-anatomical to biochemical and is embedded into the plant genes. Survival of plants in such conditions as rapid temperature drops and rises in the range of 20 °C or more depends on their biochemical defense system's ability to quickly respond to such stress, as well as on the plant's structural features. Therefore, our goal was to analyze changes of biochemical parameters under conditions of abrupt hyperthermia in four species of Crassula linne genus and to establish the connection between their anatomical and morphological features and the peculiarities of the biochemical reactions. Plants of Crassula brevifolia Harvey, Crassula lanuliginosa Harvey, Crassula muscosa Linne and Сrassula perfoliata var. minor (haworth) G.d. rowley species were held in air thermostats at 40 °C and 50 °C for 3 h, the control temperature being 26 °C. Stress response was analyzed by malondialdehyde content, superoxide dismutase and peroxidase activity and pigments content. additionally, anatomical structure of the leaves was investigated. Antioxidant response to short-term high temperature varied in different species of the Crassula genus by its directionality and intensity, and depended on the anatomical features of the plant. The additional protective mechanisms were involved in the least heat-resistant plants, such as increased carotenoids and flavonoids contents. More powerful SOD and peroxidase activities under rapid heating in plants with more effective protection at the anatomical level were showed.
植物对某些地区气候条件的适应是在进化过程中出现的,表现在从形态解剖学到生物化学的所有组织层面,并嵌入到植物基因中。植物在20°C或更高温度范围内快速降温和升温等条件下的生存取决于其生化防御系统对这种压力的快速反应能力,以及植物的结构特征。因此,我们的目标是分析四种负鼠属植物在突然高温条件下的生化参数变化,并建立它们的解剖和形态特征与生化反应特点之间的联系。短叶Crassula brevifolia Harvey、羊毛脂Crassula lanuliginosa Harvey,肌肉Crassula muscosa Linne和Сrassula perfoliata var.minor(haworth)G.d.rowley物种的植物在40°C和50°C的空气恒温器中保持3小时,控制温度为26°C。通过丙二醛含量、超氧化物歧化酶和过氧化物酶活性以及色素含量分析应激反应。此外,还对叶片的解剖结构进行了研究。不同物种对短期高温的抗氧化反应因其方向性和强度而异,并取决于植物的解剖特征。额外的保护机制涉及耐热性最低的植物,如类胡萝卜素和类黄酮含量的增加。在解剖水平上具有更有效保护的植物在快速加热下表现出更强大的SOD和过氧化物酶活性。
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引用次数: 1
Sulfonamides influence on the activity of thylakoid ATPase isolated from spinach chloroplasts 磺酰胺类化合物对菠菜叶绿体类囊体ATP酶活性的影响
Q4 Biochemistry, Genetics and Molecular Biology Pub Date : 2020-09-10 DOI: 10.15407/ubj92.04.096
Е. K. Zolotareva, A. P. Khomochkin, O. B. Onoiko
the effect of two water-soluble sulfonamides: aromatic 4-aminobenzenesulfonamide (Sa) and aliphatic trifluoromethylsulfonamide (tFmSa) on the latent and stimulated atPase activity of the catalytic part of the thylakoid atP synthase isolated from spinach (Spinacia oleracea l.) chloroplasts was studied. three methods of atPase activity stimulation were applied in the work: brief heating of the enzyme at 62 °С; incubation with 20% methanol; 25 mm sodium sulfite adding to the reaction medium. tFmSa effectively inhibited the atPase activity of the enzyme at all types of activation. i50 (tFmSa) value for was found to be about 5 μm in the case of enzyme heat treatment and 1 μm in the case of enzyme activation with sulfite or methanol. Sa did not affect atPase activity at stimulation with sulfite and inhibited with i50 about 50 μm at stimulation by heating or methanol. no effect of Sa on latent enzyme activity was observed, while tFmSa was shown to activate latent atPase by about 6 times. the data obtained showed that both sulfonamide compounds, known as carbonic anhydrase inhibitors, are able to modify the activity of chloroplast atPase.
研究了两种水溶性磺酰胺:芳香族4-氨基苯磺酰胺(Sa)和脂肪族三氟甲基磺酰胺(tFmSa)对菠菜叶绿体类囊体atP合成酶催化部分潜在和刺激的atPase活性的影响。本工作采用了三种刺激atPase活性的方法:在62°С下短暂加热;用20%甲醇孵育;向反应介质中加入25mm亚硫酸钠。tFmSa在所有类型的激活中都有效地抑制了该酶的atPase活性。在酶热处理的情况下,发现的i50(tFmSa)值约为5μm,在用亚硫酸盐或甲醇活化酶的情况下为1μm。Sa在亚硫酸盐刺激下不影响atPase活性,在加热或甲醇刺激下用i50抑制约50μm。没有观察到Sa对潜伏酶活性的影响,而tFmSa显示出激活潜伏atPase约6倍。所获得的数据表明,这两种磺酰胺类化合物都被称为碳酸酐酶抑制剂,能够改变叶绿体atPase的活性。
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引用次数: 0
mPTP opening differently affects electron transport chain and oxidative phosphorylation at succinate and NAD-dependent substrates oxidation in permeabilized rat hepatocytes mPTP打开对大鼠肝细胞中琥珀酸盐和nadd依赖性底物氧化的电子传递链和氧化磷酸化的影响不同
Q4 Biochemistry, Genetics and Molecular Biology Pub Date : 2020-09-10 DOI: 10.15407/ubj92.04.014
H. Mazur, V. M. Merlavsky, B. O. Manko, V. Manko
Mitochondrial Ca2+ overload may trigger the opening of mitochondrial permeability transition pore (mPTP) and its prolonged activation leads to cell death. aTP synthase is considered as a possible molecular component of the pore. The aim of this study was to investigate the state of oxidative phosphorylation at Ca2+induced activation of mPTP in permeabilized hepatocytes. Hepatocytes were isolated by two-stage Seglen method. Permeabilization was performed using digitonin. Oxygen consumption rate was measured with Clark electrode. Oxidative phosphorylation was determined as the ratio of the aDP-stimulated respiration and substrate-stimulated respiration rates (aDP/S). It was established that increasing of Ca2+ concentration in the medium inhibited oligomycin effects and suppressed ADPand FCCP-stimulated respiration upon succinate or glutamate, pyruvate and malate mixture oxidation. The mPTP inhibitor cyclosporin a did not directly affect respiration and oxidative phosphorylation after elevation of Ca2+ concentration and mPTP activation. When cyclosporine a was added before increasing Ca2+ concentration, the electron transport chain function (FCCP-stimulated respiration) was not impaired while the partial disruption of oxidative phosphorylation (aDP-stimulated respiration) was observed only upon succinate oxidation. The results obtained showed that inhibition of oxidative phosphorylation was the primary event in mPTP activation, possibly due to the involvement of ATP synthase in pore opening. In the case of NAD-dependent substrates oxidation that effect was stronger and faster than at succinate oxidation, due to the lower mitochondria energization.
线粒体Ca2+超载可能触发线粒体通透性转换孔(mPTP)的开放,其长期激活导致细胞死亡。aTP合酶被认为是孔的一种可能的分子成分。本研究的目的是研究渗透性肝细胞中Ca2+诱导的mPTP活化时的氧化磷酸化状态。采用两阶段Seglen法分离肝细胞。使用洋地黄苷进行渗透作用。用Clark电极测定耗氧量。氧化磷酸化被确定为aDP刺激的呼吸和底物刺激的呼吸速率的比率(aDP/S)。研究表明,培养基中Ca2+浓度的增加抑制了寡霉素的作用,并抑制了琥珀酸盐或谷氨酸盐、丙酮酸盐和苹果酸盐混合物氧化时ADP和FCCP刺激的呼吸。mPTP抑制剂环孢菌素a在Ca2+浓度升高和mPTP活化后不直接影响呼吸和氧化磷酸化。当在增加Ca2+浓度之前加入环孢菌素a时,电子传递链功能(FCCP刺激的呼吸)没有受损,而氧化磷酸化的部分破坏(aDP促进的呼吸)仅在琥珀酸氧化时观察到。结果表明,抑制氧化磷酸化是mPTP激活的主要事件,可能是由于ATP合酶参与了孔的打开。在NAD依赖性底物氧化的情况下,由于线粒体能量较低,这种作用比琥珀酸氧化更强、更快。
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引用次数: 1
Anti-inflammatory and hepatoprotective effects of polyherbal composition in patients with chronic cholecystitis 多羟基化合物对慢性胆囊炎患者的抗炎和保肝作用
Q4 Biochemistry, Genetics and Molecular Biology Pub Date : 2020-09-10 DOI: 10.15407/ubj92.04.077
M. Gahramanova, I. Khalilova, A. Omarov, Y. Susak, M. Rudyk, L. Skivka
Herbal preparations are widely used in the complementary treatment of inflammatory diseases including hepatobiliary disorders, among which chronic cholecystitis is one of the most common. This study was aimed to investigate the effect of the water extract from polyherbal composition consisting of eight medicinal plants (Helichrysum arenarium, Mentha piperita, Calendula officinalis, Taraxacum officinale, Polygonum aviculare, Matricaria chamomilla, Portulaca oleracea, hypericum perforatum) on biochemical and haematologic indices as well as on immune reactivity parameters in patients with chronic cholecystitis. It was found that consumption of polyherbal tea during 45 days was followed by normalization of liver biochemical indices (serum level of cholesterol, alanine aminotransferase and aspartate aminotransferase activity, total and unconjugated bilirubin levels and diminution of hematological (leukocytosis, increased erythrocyte sedimentation rate and neutrophil-to-lymphocyte ratio) and immunological (increased serum level of pro-inflammatory cytokines) signs of systemic inflammation in patients with hepatobiliary disorder. The results of the research showed that the studied polygerbal composition can be recommended as a component of the complementary therapy for patients with chronic cholecystitis.
中药制剂广泛应用于包括肝胆疾病在内的炎症性疾病的辅助治疗,其中慢性胆囊炎是最常见的一种。本研究旨在探讨由八种药用植物(蜡菊、薄荷、金盏花、蒲公英、黄花蓼、甘菊、马齿苋、贯叶连翘)组成的复方草药水提物对慢性胆囊炎患者生化、血液学指标及免疫反应性指标的影响。结果发现,饮用多凉茶45天后,肝脏生化指标(血清胆固醇水平、丙氨酸转氨酶和天冬氨酸转氨酶活性、总胆红素和非结合胆红素水平)恢复正常,血液学白细胞减少。肝胆疾病患者的红细胞沉降率和中性粒细胞与淋巴细胞比值升高)和免疫(血清促炎细胞因子水平升高)全身性炎症体征。研究结果表明,所研究的多球组合物可推荐作为慢性胆囊炎患者补充治疗的一个组成部分。
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引用次数: 1
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Ukrainian Biochemical Journal
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