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2018 11th International Multiconference Bioinformatics of Genome Regulation and Structure\Systems Biology (BGRS\SB)最新文献

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Inverse modeling of diffusion-reaction processes with image-type measurement data 用图像型测量数据对扩散反应过程进行逆建模
A. Penenko, Z. Mukatova
The inverse source problem for 1D diffusion-reaction model is considered. The measurement data is given as the images of the concentration fields dynamics for the subset of the interacting species. These inverse problems arise in the study of the growing tissues (morphogenes theory), in the development of the tissue engineering technologies and in the other fields of modern mathematical biology. The sensitivity operator, composed of the ensemble of the independent adjoint problem solutions allow to transform the inverse problem to the family of nonlinear ill-posed integral equations. Each member of the family correspond to the image to structure operator that extracts certain features of the image. An equation from the family is solved with the Newton-Kantorovich-type algorithm combining truncated SVD and iterative regularization. Due to the design with the adjoint problems ensemble, the algorithm can be efficiently parallelized. The algorithm’s convergence and stability are illustrated numerically in Brusselator model case.
研究一维扩散反应模型的逆源问题。测量数据以相互作用物质子集的浓度场动力学图像的形式给出。这些逆问题出现在生长组织的研究(形态发生理论)、组织工程技术的发展以及现代数学生物学的其他领域。由独立伴随问题解的集合组成的灵敏度算子允许将反问题转化为一类非线性不适定积分方程。族的每一个成员对应于提取图像某些特征的图像到结构算子。用截断奇异值分解和迭代正则化相结合的newton - kantorovich型算法求解该类方程。由于采用了伴随问题集成的设计,该算法可以有效地并行化。在Brusselator模型的情况下,用数值说明了该算法的收敛性和稳定性。
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引用次数: 1
Visible light-triggered nitric oxide donors for applications in biology and medicine 可见光触发的一氧化氮供体在生物学和医学上的应用
A. Vorob’ev, T. Dranova, A. Moskalensky
We report novel light-triggered nitric oxide (NO) donors for potential use in biology and medicine. The photoactivated release of NO was shown using colorimetric and fluorescent methods.
我们报告了一种新的光触发一氧化氮(NO)供体在生物学和医学上的潜在应用。用比色法和荧光法测定了NO的光激活释放。
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引用次数: 2
Resting State EEG as an Indicator of Cognitive Training Effect in Older Adults 静息状态脑电图作为老年人认知训练效果的指标
N. Volf, E. Privodnova, N. Volf
Although there are common principles that can be demonstrated in cognitive aging, enormous variability exists across individuals. Among other factors inter-individual variability is attributable to involvement in mental activity. The purpose of this study is to outline the changes of resting state EEG in aged men and women associated with difference in intellectual environment of their professional activity. Elderly (age 63.8, N=112) scientists (SA) and people unrelated to professional scientific activity (NSA) participated in the study. All subjects were employed full time. EEG was recorded from 26 symmetrical regions of the hemispheres in a states with closed and with open eyes. Power spectral density was calculated in delta, theta, alpha 1, 2, 3, beta 1, 2 and gamma frequency ranges. The bandwidths for the frequency bands were defined using individual alpha peak frequency as the anchor point. In condition with closed eyes, ANOVA revealed significant gender × frequency band × region × group (SA, NSA) interaction. Testing of interaction demonstrated effects in alpha 2, 3 rhythms power characterized by opposite changes of antero-posterior spectral power gradients in SA and NSA groups of men and women. There was no difference between SA and NSA groups in frontal power density. Among women members of SA group had lower posterior power than those of NSA group. In eyes open condition, significant asymmetry due to higher power values in right in comparison with left hemisphere in frontal region was found in SA group. Asymmetry of power values was not revealed in NSA.
虽然在认知衰老中有共同的原则,但个体之间存在巨大的差异。在其他因素中,个体间的差异可归因于参与心理活动。本研究旨在探讨老年男性和女性在职业活动中智力环境的差异对其静息状态脑电图的影响。老年人(63.8岁,N=112)科学家(SA)和与专业科学活动无关的人(NSA)参与了研究。所有受试者均为全职工作。在闭眼和睁眼两种状态下,分别从大脑半球的26个对称区域记录脑电图。在delta, theta, alpha 1,2,3, beta 1,2和gamma频率范围内计算功率谱密度。使用单个α峰值频率作为锚点来定义频带的带宽。在闭眼条件下,方差分析显示显著的性别×频带×地区×组(SA, NSA)交互作用。相互作用测试表明,在SA组和NSA组中,α 2,3节律功率的变化表现为前后谱功率梯度的相反变化。SA组与NSA组在额面功率密度上无显著差异。在女性中,SA组成员的后验功率低于NSA组。在睁眼状态下,SA组在额叶区右半球比左半球有明显的不对称性。权力价值观的不对称性在国家安全局中没有表现出来。
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引用次数: 2
The effect of 5-HTTLPR on EEG reactions among Yakuts and Russians during the recognition of emotionally colored verbal stimuli 5-HTTLPR对雅库特人和俄罗斯人识别情绪性色彩言语刺激时脑电反应的影响
T. Ayusheeva, S. Tamozhnikov, A. Karpova, A. Saprygin, N. Borisova, A. Savostyanov
The effect of 5-HTTLPR on an emotional speech perception was studied by means of EEG analysis. Two ethnically different groups (Russians and Yakuts) were compared. No significant ethnic effects were found, but significant interaction of the factors "gender" and "genotype" has been revealed for the aggression containing sentences. 5-HTTLPR modulates the perception of aggression, but its effects are opposite for men and women.
通过脑电分析研究了5-HTTLPR对情绪言语感知的影响。两个不同种族的群体(俄罗斯人和雅库特人)进行了比较。种族效应不显著,但“性别”和“基因型”对攻击性语句有显著的交互作用。5-HTTLPR调节对攻击性的感知,但对男性和女性的影响是相反的。
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引用次数: 1
Evolutionary Computations and Modular Organization of the Gene Regulatory Regions 基因调控区的进化计算和模块化组织
A. Spirov, E. Myasnikova
Modular organization of gene regulatory regions (promoters and enhancers) is crucial for our understanding of the gene functioning and evolution. In the area of Evolutionary Computations, inspired by the ideas and concepts from evolutionary biology, it was paid a special attention to the theoretical foundations for the evolutionary search efficacy. These were Schema theorem and Building block hypothesis (by J. Holland) that laid the foundation for this area. On the way to further develop the theory, the Royal Road functions (RRFs) were introduced and comprehensively studied. Here we are considering some case-studies of the modular gene regulatory regions which could be treated as RRFs implementations in directed molecular evolution (SELEX, etc.). Analytical tools from different math fields gave possibilities for van Nimwegen with co-authors to develop a detailed and quantitative description of the search dynamics for the RRF class of problems. The approach bridges evolutionary computations from benchmark cases, such as RRF, which are well-understood theoretically, to biological cases, which can serve as a basis for more efficient directed molecular evolution in the test tube. By introducing crossover operators that perform well on RRFs, we are developing computational techniques to deal with the real design problems for bacterial promoters. In particular, we are introducing crossover operators that work like retroviral or "sexual" PCR recombination. We found that our algorithms are capable to achieve the efficacy of the evolutionary search substantially higher than standard EC. Computational theory from EC can contribute to both understanding how real gene structures have evolved and to speeding up laboratory work on directed evolution of promoters and other gene regulatory elements.
基因调控区域(启动子和增强子)的模块化组织对我们理解基因的功能和进化至关重要。在进化计算领域,受到进化生物学思想和概念的启发,特别关注进化搜索效率的理论基础。图式定理和积木假说(J. Holland)为这一领域奠定了基础。在进一步发展理论的道路上,引入并全面研究了皇家道路函数(rrf)。在这里,我们正在考虑一些模块化基因调控区域的案例研究,这些区域可以被视为定向分子进化(SELEX等)中的rfs实现。来自不同数学领域的分析工具使van Nimwegen和他的合作者有可能对RRF类问题的搜索动态进行详细和定量的描述。该方法连接了从基准案例(如RRF)到生物学案例(可以作为试管中更有效的定向分子进化的基础)的进化计算,这些案例在理论上已经得到了很好的理解。通过引入在rrf上表现良好的交叉算子,我们正在开发计算技术来处理细菌启动子的实际设计问题。特别是,我们正在引入类似逆转录病毒或“性”PCR重组的交叉操作符。我们发现,我们的算法能够实现进化搜索的效率大大高于标准EC。EC的计算理论既有助于理解真实的基因结构是如何进化的,也有助于加快启动子和其他基因调控元件定向进化的实验室工作。
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引用次数: 2
USING HORIZONTALLY SCALE INFRASTRUCTURE IN SEARCHING FOR SIMILARITY IN GENOME DATA OF ECOSYSTEMS 利用水平尺度基础设施搜索生态系统基因组数据的相似性
A. Tskhai, S. Murzintsev
For the processing of reference information (for example, from ENSEMBL, GenBank, KEGG), namely: rapid comparison of genomes of organisms in order to discover recurring sets of nucleotides, a special-purpose computer system has been developed. Due to the large amount of data that appears during the processing of the source information, a transition to non-relational databases has been made, as more flexible and scalable. The distributed non-relational DB MongoDB and the algorithm of data processing Winnowing were used as the basis of the approach. When using a non-relational database to identify genetic similarity, was proposed the option of submitting the prints of structural genomic variations in the form of "key-value". The software implementation of the developed model was implemented. Computing experiments were performed: (1) loading data into a database using one and three shards (servers where the data is stored and the information is searched and processed); (2) search for coincidences of genomes with DB of genomes using one and three shards; (3) calculation of the speed of searching for genomes in the database; (4) calculation of the rate of loading of genomes in the database. The result of the experiments was confirmation of the possibility of using the proposed method of searching for genetic similarity, for example, for using in analysis of deviations at the gene level. The continuation of the work can be carried out in the following directions: (1) solving the problem of determining the moment when it is necessary to add a node to the cluster with increasing the number of deviations considered and increasing the number of genomes in the DB of organisms; (2) study of genomic disorders to assess the probability of genetic abnormalities at the at the recognition stage of the potentially possible unfavorable development of the situation.
为了处理参考信息(例如,来自ENSEMBL, GenBank, KEGG),即:快速比较生物体的基因组以发现重复出现的核苷酸集,已经开发了一种专用计算机系统。由于在源信息处理过程中出现了大量数据,因此需要向非关系数据库过渡,因为它更加灵活和可伸缩。采用分布式非关系型数据库MongoDB和数据处理算法Winnowing作为该方法的基础。在使用非关系数据库进行遗传相似性鉴定时,提出了以“键值”形式提交结构基因组变异图谱的选择。对所开发的模型进行了软件实现。进行计算实验:(1)使用一个和三个分片(存储数据和搜索处理信息的服务器)将数据加载到数据库中;(2)利用1条和3条分片搜索基因组与基因组DB的一致性;(3)计算数据库中基因组的搜索速度;(4)计算数据库中基因组的加载率。实验结果证实了使用所提出的寻找遗传相似性的方法的可能性,例如,用于分析基因水平上的偏差。后续的工作可以在以下方向进行:(1)通过增加考虑的偏差数量和增加生物数据库中的基因组数量来解决确定需要向集群添加节点的时刻的问题;(2)研究基因组性疾病,评估遗传异常在识别阶段可能出现的潜在不利发展情况的概率。
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引用次数: 0
Empagliflozin and linagliptin ameliorate podocyte injury and enhance autophagy in a model of type 2 diabetic nephropathy 恩格列净和利格列汀改善2型糖尿病肾病模型足细胞损伤和增强自噬
A. Korbut, V. Klimontov, Iuliia S. Taskaeva, N. Bgatova, E. Zavyalov
Podocyte injury is believed to be a cornerstone in pathogenesis of diabetic kidney disease. Recent data indicate emerging role of autophagy downregulation in diabetic podocytopathy. Inhibitors of SGLT2 and DPP4 are considered as promising therapeutic agents in diabetic nephropathy. We aimed to assess the effects of SGLT2 inhibitor empagliflozin and DPP4 inhibitor linagliptin on podocyte injury and autophagy in a model of type 2 diabetes. Eight-week-old male db/db mice were treated with empagliflozin (10 mg/kg), linagliptin (10 mg/kg), combination of these agents, or placebo for 8 weeks. Non-diabetic db/+ mice were acted as control. Renal changes were analyzed from the light and electron microscopy. To estimate autophagy, beclin-1 staining in glomeruli and the number of autophagosomes, lysosomes, and autolysosomes in a section of a podocyte were assessed by immunohistochemistry and electron microscopy, respectively. Diabetic db/db mice became obese and hyperglycemic before the start of experiment and demonstrated elevated levels of leptin and insulin and increased fat percentage (all p<0.00001). Vehicle-treated diabetic mice had weak staining for beclin-1 in glomeruli and reduced autophagosome number in podocytes. Beclin-1-positive area correlated with the number of autophagosomes and lysosomes (both r=0.43, p=0.04) and mean width of foot processes (r=-0.64, p=0.0008). Under the treatment, glomerular staining for beclin-1 was increased (p=0.03 for empagliflozin, p=0.008 for linagliptin, p=0.003 for combination). Empagliflozin and linagliptin, either alone or both, increased the number of autophagosomes (p=0.04) and autolysosomes (p=0.03) in podocytes. The data provide further explanation for the mechanism of nephroprotective effect of SGLT2 and DPP4 inhibitors in diabetes.
足细胞损伤被认为是糖尿病肾病发病机制的基础。最近的研究表明,自噬下调在糖尿病足细胞病中起着新的作用。SGLT2和DPP4抑制剂被认为是治疗糖尿病肾病的有前途的药物。我们旨在评估SGLT2抑制剂恩格列净和DPP4抑制剂利格列汀对2型糖尿病模型足细胞损伤和自噬的影响。8周龄雄性db/db小鼠分别用恩格列净(10mg /kg)、利格列汀(10mg /kg)、这些药物的联合或安慰剂治疗8周。非糖尿病db/+小鼠作为对照。通过光镜和电镜分析肾脏的变化。为了评估自噬,肾小球中的beclin-1染色以及足细胞切片中自噬体、溶酶体和自噬体的数量分别通过免疫组织化学和电子显微镜进行评估。糖尿病db/db小鼠在实验开始前出现肥胖和高血糖,瘦素和胰岛素水平升高,脂肪百分比增加(均p<0.00001)。药物处理的糖尿病小鼠肾小球beclin-1染色较弱,足细胞自噬体数量减少。beclin -1阳性面积与自噬体和溶酶体数量(r= 0.43, p=0.04)和足突平均宽度(r=-0.64, p=0.0008)相关。治疗组肾小球beclin-1染色升高(依格列净组p=0.03,利格列汀组p=0.008,联合用药组p=0.003)。恩格列净和利格列汀单独使用或同时使用均可增加足细胞中自噬体(p=0.04)和自噬体(p=0.03)的数量。这些数据进一步解释了SGLT2和DPP4抑制剂在糖尿病中的肾保护作用机制。
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引用次数: 0
Modified Sorbents for Pharmacology 修饰的药理学吸附剂
Yuriy I. Borodin, L. N. Rachkovskaya, T. Popova, A. Kotlyarova, S. Michurina, A. Shurlygina, Edmund E. Rachkovskiy, M. V. Robinson, P. Madonov, M. Korolev, A. Letyagin, V. Konenkov
Enterosorbents are widely used in medicine with a significant number of pathological conditions, accompanied by both endo- and exotoxication. The accumulated experience of using sorbents has shown that the sanogenic effect of sorbents on the body can be enhanced if they are modified by various biologically active components. The aim of the work is the use of modified sorption materials based on aluminum oxide, polymethylsiloxane and active components - lithium citrate, silver nanoclusters, melatonin in medicine.
肠吸收剂广泛应用于具有大量病理条件的医学中,伴随着内毒性和外毒性。吸附剂的使用经验表明,通过对吸附剂进行各种生物活性成分的修饰,可以增强其对人体的致sanogen效应。这项工作的目的是使用基于氧化铝、聚甲基硅氧烷和活性成分——枸橼酸锂、银纳米团簇、褪黑激素的改性吸附材料。
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引用次数: 0
The connection between the resting-state EEG and the allelic polymorphism of serotonin transporter (5-HTTLPR) among Yakuts and Russians 雅库特人和俄罗斯人静息状态脑电图与5-HTTLPR等位基因多态性的关系
A. Savostyanov, S. Tamozhnikov, A. Karpova, A. Saprygin, D. Bazovkina, E. Proshina
The genetic-related differences in a spectral power distribution of resting-state EEG was compared between two groups of healthy participants – the Russian and Yakutian students. The SS genotype of 5-HTTLPR polymorphism was associated with lower alpha band spectral power, but higher delta and theta power in comparison with L/- genotypes. However, the ethnic-related differences in spectral power density, which were independent on 5-HTTLPR, were also revealed in the same frequency bands.
在两组健康参与者——俄罗斯学生和雅库特学生之间,比较了静息状态脑电图频谱功率分布的遗传相关差异。与L/-基因型相比,5-HTTLPR多态性的SS基因型α波段功率较低,δ和θ波段功率较高。然而,在相同的频带中,谱功率密度的种族相关差异(与5-HTTLPR无关)也被揭示出来。
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引用次数: 0
MicroRNA in Lymph in Experimental Breast Cancer 实验性乳腺癌淋巴中的MicroRNA
A. Kabakov, O. Kazakov, A. Poveshchenko, A. Lykov, T. Reiter, D. N. Strunkin, L. F. Gulyaeva, V. Konenkov
Breast cancer (BC) is the leading cause of cancer death in women worldwide due to the complicated etiology involving both genetic and environmental factors. Objective: To study the expression levels of miRNAs (-21, -221, -222, -429) in lymph in Wistar female rats in chemically induced breast cancer, resection and chemotherapy of breast cancer. Methods-The histological type of BC, the phenotype of BC cells, the level of mIRNAs expression in lymph was studied. Results-MNU-induced breast cancer in animal has ER-/PG+/Her2/neu- phenotype and therefore has common feature with human luminal A subtype of breast cancer. In the breast cancer group, lymphomas significantly increased the levels of miRNA-21 and miRNA-221 expression compared to the control group. After chemotherapy, the expression levels of miRNA-21 and miRNA-221 were significantly reduced compared to the BC group. In the BC group, the expression levels of miRNA-429 are significantly reduced compared to the control group. After chemotherapy, the expression of miRNA-429 is significantly increased in comparison with the BC group. Conclusion-In lymph miRNA-21 and miRNA-221 are diagnostic-relevant tumor markers. MicroRNA-429 is diagnostic-relevant marker of the chemotherapy effectiveness.
乳腺癌(BC)是世界范围内女性癌症死亡的主要原因,由于其复杂的病因涉及遗传和环境因素。目的:研究Wistar雌性大鼠在化学诱导乳腺癌、乳腺癌切除及化疗过程中淋巴组织中mirna(-21、-221、-222、-429)的表达水平。方法观察BC的组织学分型、细胞表型、淋巴组织中mIRNAs的表达水平。结果:mnu诱导的动物乳腺癌具有ER-/PG+/Her2/ new表型,与人腔A亚型乳腺癌具有共同特征。在乳腺癌组中,与对照组相比,淋巴瘤显著增加了miRNA-21和miRNA-221的表达水平。化疗后,与BC组相比,miRNA-21和miRNA-221的表达水平明显降低。在BC组中,miRNA-429的表达水平与对照组相比显著降低。化疗后,miRNA-429的表达较BC组明显升高。结论:在淋巴中,miRNA-21和miRNA-221是诊断相关的肿瘤标志物。MicroRNA-429是化疗疗效的诊断相关标志物。
{"title":"MicroRNA in Lymph in Experimental Breast Cancer","authors":"A. Kabakov, O. Kazakov, A. Poveshchenko, A. Lykov, T. Reiter, D. N. Strunkin, L. F. Gulyaeva, V. Konenkov","doi":"10.1109/CSGB.2018.8544812","DOIUrl":"https://doi.org/10.1109/CSGB.2018.8544812","url":null,"abstract":"Breast cancer (BC) is the leading cause of cancer death in women worldwide due to the complicated etiology involving both genetic and environmental factors. Objective: To study the expression levels of miRNAs (-21, -221, -222, -429) in lymph in Wistar female rats in chemically induced breast cancer, resection and chemotherapy of breast cancer. Methods-The histological type of BC, the phenotype of BC cells, the level of mIRNAs expression in lymph was studied. Results-MNU-induced breast cancer in animal has ER-/PG+/Her2/neu- phenotype and therefore has common feature with human luminal A subtype of breast cancer. In the breast cancer group, lymphomas significantly increased the levels of miRNA-21 and miRNA-221 expression compared to the control group. After chemotherapy, the expression levels of miRNA-21 and miRNA-221 were significantly reduced compared to the BC group. In the BC group, the expression levels of miRNA-429 are significantly reduced compared to the control group. After chemotherapy, the expression of miRNA-429 is significantly increased in comparison with the BC group. Conclusion-In lymph miRNA-21 and miRNA-221 are diagnostic-relevant tumor markers. MicroRNA-429 is diagnostic-relevant marker of the chemotherapy effectiveness.","PeriodicalId":230439,"journal":{"name":"2018 11th International Multiconference Bioinformatics of Genome Regulation and Structure\\Systems Biology (BGRS\\SB)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125898374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
期刊
2018 11th International Multiconference Bioinformatics of Genome Regulation and Structure\Systems Biology (BGRS\SB)
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